01933nas a2200193 4500008004100000022001400041245012000055210006900175260011000244300001400354490000700368520114000375100002001515700002001535700002101555700001501576700002001591856012801611 2010 eng d a0959-942800aSelective CO2 and H-2 adsorption in a chiral magnesium-based metal organic framework (Mg-MOF) with open metal sites0 aSelective CO2 and H2 adsorption in a chiral magnesiumbased metal aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcSEP a9073-90800 v203 a

A rare porous magnesium-based metal-organic framework, Mg-MOF-1 [Mg(3,5-PDC)(H2O)], was synthesized solvothermally in DMF. Structural determination by X-ray single-crystal diffraction technique reveals that this chiral MOF (space group P6(1)22) is constructed by helical assembly of Mg2+ ions with achiral 3,5-pyridine dicarboxylates and coordinating water molecules, to form a three-dimensional framework with parallel hexagonal channels. The structural detail of its 0D analogue Mg-MOF-2 [Mg(2,4-PDC)(H2O)(3)] has been discussed to show how subtle variation in the ligand architecture changes the resulting structure from 0D to 3D. Mg-MOF-1 remains robust and porous upon evacuation of the coordinating water molecules. This is the first report of a chiral hexagonal Mg-MOF synthesized from an achiral organic building unit. Open Mg metal sites show selective hydrogen (H-2) adsorption (ca. 0.8 wt% at 77 K) and carbon dioxide (CO2) uptake (ca. 0.7 mmol g(-1) at 298 K) over nitrogen at 1 atm. Ab initio quantum chemical calculation of adsorption energies and possible adsorption sites of hydrogen molecules are also reported.

1 aMallick, Arijit1 aSaha, Subhadeep1 aPachfule, Pradip1 aRoy, Sudip1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/selective-co2-and-h-2-adsorption-chiral-magnesium-based-metal-organic-framework-mg-mof-001988nas a2200181 4500008004100000022001400041245016000055210006900215260011000284300001400394490000700408520118800415100002101603700001701624700001701641700002001658856012801678 2010 eng d a1466-803300aStructural diversity in a series of metal-organic frameworks (MOFs) composed of divalent transition metals, 4,4 `-bipyridine and a flexible carboxylic acid0 aStructural diversity in a series of metalorganic frameworks MOFs aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcAPR a2381-23890 v123 a

A series of flexible metal-organic frameworks (MOFs) have been successfully synthesized under hydrothermal condition using 1,3-adamantanediacetic acid (C(14)H(20)O(4), H(2)ADA) as a flexible dicarboxylate building block, 4,4'-bipyridine and transition metal ions [Cd(II), Zn(II), and Mn(II)] as metal centers in DMF and aqueous media. These MOFs formulated as [Cd(ADA)(4,4'-bipy)(0.5)]center dot(DMF) (Cd-ADA-1), [Mn(ADA)(4,4'-bipy)(0.5)]center dot(DMF) (Mn-ADA-1), Zn(ADA)(4,4'-bipy)(0.5) (Zn-ADA-1), and [Mn(HADA)(2)(4,4'-bipy)(H(2)O)(2)] (Mn-ADA-2) (ADA = 1,3-adamantanediacetate, 4,4'-bipy = 4,4'-bipyridine and DMF = N,N'-dimethyl formamide) display interesting 1D, 2D and 3D structural features depending on the solvent of synthesis. All these MOFs were structurally determined by single-crystal X-ray diffraction. The coordination modes of this ligand are discussed and in addition, thermal stability and hydrogen (H(2)) and carbon-dioxide (CO(2)) adsorption properties of Cd-ADA-1, Mn-ADA-1 and Zn-ADA-1 are also presented. Hydrogen sorption at 77 K and up to 1 atm is found to be 0.42, 0.72 and 1.36 wt% without saturation for Zn-ADA-1, Mn-ADA-1 and Cd-ADA-1 samples.

1 aPachfule, Pradip1 aPanda, Tamas1 aDey, Chandan1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/structural-diversity-series-metal-organic-frameworks-mofs-composed-divalent-transition-002718nas a2200193 4500008004100000022001400041245017700055210006900232260007100301300001400372490000700386520191400393100002102307700001702328700001702345700001702362700002002379856012502399 2010 eng d a1528-748300aStructural diversity in partially fluorinated metal organic frameworks (F-MOFs) composed of divalent transition metals, 1,10-phenanthroline, and fluorinated carboxylic acid0 aStructural diversity in partially fluorinated metal organic fram a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcMAR a1351-13630 v103 a

Seven new partially fluorinated metal-organic frameworks (F-MOFs) have been synthesized under different solvothermal conditions (H(2)O or N,N-dimethylformamide (DMF)) from transition metal cations [Zn(II), Co(II), and Mn(II)], 1,10-phenanthroline (phen), and 4,4'-(hexafluoroisopropylidene) bis(benzoic acid) (C(17)H(10)F(6)O(4), H(2)hfbba) to determine the influence of reaction conditions on the formation of metal-organic frameworks. This family of materials displays a striking degree of structural similarity depending on the solvent of synthesis. Of the seven materials, two contain three-dimensional connectivity: Co(3)(hfbba)(6)(phen)(2) (F-MOF-6) and Mn(3)(hfbba)(6)(Phen)(2) (F-MOF-10). Three materials are one-dimensional structures: Zn(hfbba)(0.5)(phen)(HCO(2)) (F-MOF-8), Mn(Hhfbba)(2)(Phen) (F-MOF-11), and [Mn(hfbba)(2)(dm-phen)]center dot(H(2)O) (F-MOF-11A). Lastly, Co(hfbba)(phell)(2)center dot 2(H(2)hfbba)(H(2)O)(HCO(2)) (F-MOF-7) and Zn(hfbba)(phen)(2)center dot 2(H(2)hfbba) (H(2)O)-(HCO(2)) (F-MOF-9) are discrete zero-dimensional molecular complexes. F-MOF-6 and -10, which feature it three-dimensional (3D) framework with pcu topolgy are formed in DMF like F-MOF-8 and at 85 degrees C. The remaining F-MOFs are formed by a solvothermal reaction at 120 degrees C in water. F-MOF-7 and -9 are isostructural discrete zero-dimensional molecular complexes (a similar to 19.5; b similar to 13.7; c similar to 26.2/29.6 angstrom; beta similar to 99.9/120.04; V similar to 6840 angstrom(3)). All these F-MOFs were structurally determined by single-crystal X-ray diffraction. Solid-state properties such its UV-vis and the thermal stability of F-MOF-6 to -11A have also been studied. Insight into the factors influencing the preferred crystallization of a specific complex over others has been obtained from full quantum chemical (QM) calculations using density functional theory (DFT).

1 aPachfule, Pradip1 aDey, Chandan1 aPanda, Tamas1 aVanka, Kumar1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/structural-diversity-partially-fluorinated-metal-organic-frameworks-f-mofs-composed-001507nas a2200181 4500008004100000022001400041245012300055210006900178260007100247300001400318490000700332520078300339100002101122700001401143700001901157700002001176856012901196 2010 eng d a1528-748300aStructural, magnetic, and gas adsorption study of a two-dimensional tetrazole-pyrimidine based metal-organic framework0 aStructural magnetic and gas adsorption study of a twodimensional a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcJUN a2475-24780 v103 a

A new two-dimensional (2D) metal-organic framework, Cu-TP-1, has been synthesized under solvothermal conditions (DMF) from the transition metal cation Cu(II) and 2-tetrazole pyrimidine (C5H5N6, H-TP). The structure has been determined by single crystal X-ray crystallography which shows a (6,3) honeycomb 2D net with perpendicular one-dimensional channels. Permanent porosity of Cu-TP-1 has been determined by the nitrogen adsorption isotherm. Cu-TP-1 show interesting H-2 and CO2 uptake. CO2 uptake of Cu-TP-1 (at 298 K, 1 atm pressure) is seen to be comparable to the recently reported ZIF-95 which outperforms ZIF-100 and BPL carbon. The magnetic properties show an antiferromagnetically coupled Cu ... Cu interaction down to 8 K with a Weiss temperature around 108 K.

1 aPachfule, Pradip1 aDas, Raja1 aPoddar, Pankaj1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/structural-magnetic-and-gas-adsorption-study-two-dimensional-tetrazole-pyrimidine-based-002521nas a2200181 4500008004100000022001400041245009900055210006900154260011000223300001400333490000700347520177900354100002102133700001702154700001702171700002002188856013102208 2010 eng d a1466-803300aSynthesis and structural comparisons of five new fluorinated metal organic frameworks (F-MOFs)0 aSynthesis and structural comparisons of five new fluorinated met aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcJAN a1600-16090 v123 a

A series of fluorinated metal-organic frameworks (F-MOFs) have been successfully synthesized under hydrothermal condition using 4,40-(hexafluoroisopropylidene) bis(benzoic acid) (C(17)H(10)F(6)O(4), H(2)hfbba) as a flexible dicarboxylate building block, Cu(+2) and various heterocyclic co-ligands. These F-MOFs formulated as [Cu(hfbba)(phen)(2)]center dot 2(H(2)hfbba)(H(2)O)(HCO(2)) (F-MOF-1), [Cu(hfbba)(2)(2,2'-bipy) 2(H(2)O)] (F-MOF-2), [Cu(hfbba)(4,4'-dime-2,2'-bipy)(HCO(2))]center dot(hfbba)(H(2)O) (F-MOF-3), [Cu(2)(hfbba)(2)(3-mepy)(2)]center dot(DMF) 2(3-mepy) (F-MOF-4), and [Cu(hfbba)(2)(phen)(2)]center dot 0.5(DMF) (F-MOF5) (hfbba = 4,4'-(Hexafluoroisopropylidene) bis(benzoate), phen 1,1'-phenanthroline; 2,2'-bipy 2,2'-bipyridine; 4,4'dime-2,2'-bipy 4,4'-dimethyl 2,2'-bipyridine; 3-mepy 3-methyl-pyridine and DMF dimethyl formamide) display interesting H-bonded, 1D and 2D structural features. All these F-MOFs were structurally determined by single-crystal X-ray diffraction. F-MOF-1 and 5 form a distorted octahedral Cu(+2) secondary building unit (SBU). F-MOF-5 forms a one-dimensional architecture constructed from Cu(2+) ions bridged by phen anions and two types of 4 hfbba ligands while in F-MOF-1, two among the three acid co-ligands are not coordinated with Cu(2+) ions. F-MOF-2 displays dinuclear SBUs within the three-dimensional frameworks whereas F-MOF-3 displays mononuclear SBUs and forms a one-dimensional chain. F-MOF-4 display a interesting 2D framework with conventional Cu(2)(CO(2))(4) paddle wheel SBU. In the crystal structures four hfbba ligands, each coordinated to a dicopper paddlewheel unit via one of their carboxylate groups. Solid-state properties such as UV-vis and thermal stability of F-MOF-1-5 have also been studied.

1 aPachfule, Pradip1 aDey, Chandan1 aPanda, Tamas1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/synthesis-and-structural-comparisons-five-new-fluorinated-metal-organic-frameworks-f-mofs-001104nas a2200193 4500008004100000022001400041245011100055210006900166260011000235300001400345490000700359520032500366100001700691700002100708700001600729700001900745700002000764856012600784 2011 eng d a1359-734500aAmino functionalized zeolitic tetrazolate framework (ZTF) with high capacity for storage of carbon dioxide0 aAmino functionalized zeolitic tetrazolate framework ZTF with hig aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcJAN a2011-20130 v473 a

A three dimensional -NH(2) functionalized Zeolitic Tetrazolate Framework (ZTF-1) has been reported. The framework adopts a dia topology (M-L-M angle is close to 156 degrees). ZTF-1 shows high CO(2) (273 K) and H(2) (77 K) uptake due to the presence of the free -NH(2) group and uncoordinated tetrazolate nitrogen.

1 aPanda, Tamas1 aPachfule, Pradip1 aChen, Yifei1 aJiang, Jianwen1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/amino-functionalized-zeolitic-tetrazolate-framework-ztf-high-capacity-storage-carbon-001213nas a2200193 4500008004100000022001400041245011500055210006900170260011000239300001600349490000700365520042700372100001700799700001400816700002500830700001900855700002000874856012500894 2011 eng d a1359-734500aDesign and in situ synthesis of a Cu-based porous framework featuring isolated double chain magnetic character0 aDesign and in situ synthesis of a Cubased porous framework featu aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcSEP a11008-110100 v473 a

A Cu-based double chain MOF was synthesized in hydrothermal conditions using an in situ ligand formation method. This double chain MOF shows temperature dependent ferromagnetic (long range ordering) and antiferromagnetic (intra double chain) coupling. The magnetic behaviour originating from the individual double chain remains almost same even after structural collapse due to the removal of guest water molecules.

1 aDey, Chandan1 aDas, Raja1 aSaha, Binoy, Krishna1 aPoddar, Pankaj1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/design-and-situ-synthesis-cu-based-porous-framework-featuring-isolated-double-chain-001886nas a2200253 4500008004100000022001400041245008200055210006900137260010600206300001400312490000700326520094000333653003101273653004301304653001701347100002001364700001801384700002401402700002001426700002301446700002001469700002901489856011401518 2011 eng d a0038-092X00aEnhanced DSSC performance with high surface area thin anatase TiO2 nanoleaves0 aEnhanced DSSC performance with high surface area thin anatase Ti aTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLANDbPERGAMON-ELSEVIER SCIENCE LTDcJUN a1213-12190 v853 a

Thin anatase TiO2 nanoleaves (NLs) with high surface area (similar to 93 m(2)/g) are synthesized by hydrothermal route and dye-sensitized solar cells (DSSC) made using such NLs are compared with those made with hydro-thermally synthesized TiO2 nanoparticles and the Degussa P25 powder. The NLs-based DSSCs show increment of 16% and 24% in the total conversion efficiency over the cells made with NPs and P25 respectively. Interestingly, the highest increment in the conversion efficiency (similar to 35%) is achieved for cells made using a 50:50 (wt/wt) mixture of NLs and NPs. In this case the dye loading is found to be >50% higher than the case of NP films. Moreover the DC resistance of diffusion of I-3(-) in electrolyte (as revealed by the electrochemical impedance spectroscopy) is substantially lower than the NP film case, other cell parameters being nominally comparable. (C) 2011 Elsevier Ltd. All rights reserved.

10aDye-sensitized solar cells10aElectrochemical impedance spectroscopy10ahydrothermal1 aDhas, Vivek, V.1 aMuduli, Subas1 aAgarkar, Shruti, A.1 aRana, Abhimanyu1 aHannoyer, Beatrice1 aBanerjee, Rahul1 aOgale, Satishchandra, B. uhttps://library.ncl.res.in/content/enhanced-dssc-performance-high-surface-area-thin-anatase-tio2-nanoleaves-001410nas a2200181 4500008004100000022001400041245015200055210006900207260011000276300001600386490000700402520061200409100002101021700001601042700001901058700002001077856013101097 2011 eng d a0959-942800aExperimental and computational approach of understanding the gas adsorption in amino functionalized interpenetrated metal organic frameworks (MOFs)0 aExperimental and computational approach of understanding the gas aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcOCT a17737-177450 v213 a

Two isostructural, three dimensional, interpenetrated, amino (-NH2) functionalized Metal Organic Frameworks [Cd(ANIC)(2)] (Cd-ANIC-1) and [Co(ANIC)(2)] (Co-ANIC-1) with amine-lined pores have been reported. The framework adopts dia topology with interpenetration. Cd-ANIC-1 and Co-ANIC-1 show high CO2 (273 K) and H-2 (77 K) uptake due to the presence of free -NH2 groups and framework interpenetration. The effect of interpenetration and amino functionalization on gas uptake properties of MOFs has been analysed experimentally and computationally, in the isostructural MOFs Cd-ANIC-1 and Co-ANIC-1.

1 aPachfule, Pradip1 aChen, Yifei1 aJiang, Jianwen1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/experimental-and-computational-approach-understanding-gas-adsorption-amino-functionalized-000975nas a2200193 4500008004100000022001400041245008800055210006900143260011000212300001400322490000700336520022300343100002100566700001800587700001700605700002000622700002200642856011700664 2011 eng d a1359-734500aFe(III) complex of biuret-amide based macrocyclic ligand as peroxidase enzyme mimic0 aFeIII complex of biuretamide based macrocyclic ligand as peroxid aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcJUN a8016-80180 v473 a

An Fe(III) complex of a biuret-amide based macrocyclic ligand that exhibits both excellent reactivity for the activation of H(2)O(2) and high stability, especially at low pH and high ionic strength, is reported.

1 aPanda, Chakadola1 aGhosh, Munmun1 aPanda, Tamas1 aBanerjee, Rahul1 aGupta, Sayam, Sen uhttps://library.ncl.res.in/content/feiii-complex-biuret-amide-based-macrocyclic-ligand-peroxidase-enzyme-mimic-002300nas a2200169 4500008004100000022001400041245013300055210006900188260007100257300001600328490000800344520158800352100002701940700001701967700002001984856012602004 2011 eng d a0002-786300aHelical water chain mediated proton conductivity in homochiral metal-organic frameworks with unprecedented zeolitic unh-topology0 aHelical water chain mediated proton conductivity in homochiral m a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcNOV a17950-179580 v1333 a

Four new homochiral metal-organic framework (MOF) isomers, [Zn(l-L-Cl)(Cl)](H2O)(2) (1), [Zn(l-L-Br)(Br)]-(H2O)(2) (2), [Zn(d-L-Cl)(Cl)(H2O)(2) (3), and [Zn(d-L-Br)-(Br)] (H2O)(2) (4) [L = 3-methyl-2-(pyridin-4-ylmethylamino)-butanoic acid], have been synthesized by using a derivative of L-/D-valine and Zn(CH3COO)(2)center dot 2H(2)O. A three-periodic lattice with a parallel ID helical channel was formed along the crystallographic c-axis. Molecular rearrangement results in an unprecedented zeolitic unh-toparigy in 1-4. In each case, two lattice water molecules (one H-bonded. to halogen atoms) form a secondary helical continuous water chain inside the molecular helix. MOFs 1 and 2 shows different water adsorption properties and hence different water affinity. The arrangement of water molecules inside the channel Was monitored by variable temperature single crystal X-ray diffraction, which indicated that MOF 1 has a higher water holding capacity than MOF 2. In MOF 1, water escapes. at 80 degrees C, while in T the same happens at a much lower temperature (similar to 40 degrees C). All the MOFs reported here shows reversible crystallization by readily reabsorbing moisture. In MOFs 1 and 2, the frameworks are stable after solvent removal, which is confirmed by a single-crystal to single crystal transformation. MOFs 1 and 3 show high proton conductivity of 4.45 x 10(-5) and 4.42 x 10(-5) S cm(-1), respectively, while 2 and 4 shows zero proton conductivity. The above result is attributed to the fact that MOF 1 has a higher water holding capacity than MOF 2.

1 aSahoo, Subash, Chandra1 aKundu, Tanay1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/helical-water-chain-mediated-proton-conductivity-homochiral-metal-organic-frameworks-001280nas a2200193 4500008004100000022001400041245011800055210006900173260011000242300001400352490000700366520048800373100002400861700002500885700002100910700002100931700002000952856011400972 2011 eng d a1466-803300aHydrogen bond directed honeycomb-like porous network structure of tris (bipyridyl-glycoluril)cobalt(III) chloride0 aHydrogen bond directed honeycomblike porous network structure of aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcJUL a5289-52910 v133 a

The [Co(bpg)3]Cl-3 complex (1), where bpg = 4b, 5, 7, 7a-tetrahydro4b,7a-epiminomethan-oimino-6H-imidazo [4,5-f][1,10]-phenanthroline-6,13-dione has been synthesized and characterized by various spectroscopic techniques and single crystal X-ray diffraction. The combination of bipyridyl-glycoluril (bpg) ligands and cobalt ion self-organise to form a honeycomb-like porous network structure resulting in the formation of zeolite like channels which adsorb gases, is described.

1 aKawade, Vitthal, A.1 aKumbhar, Avinash, S.1 aErxleben, Andrea1 aPachfule, Pradip1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/hydrogen-bond-directed-honeycomb-porous-network-structure-tris-bipyridyl-001288nas a2200157 4500008004100000022001400041245010400055210006900159260007100228300001400299490000700313520064100320100002100961700002000982856012801002 2011 eng d a1528-748300aPorous nitrogen rich cadmium-tetrazolate based metal organic framework (MOF) for H-2 and CO2 uptake0 aPorous nitrogen rich cadmiumtetrazolate based metal organic fram a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcDEC a5176-51810 v113 a

The highly porous nitrogen rich metal organic framework [Cd-3(4-TP)(6)] (Cd-4TP-1) was synthesized solvothermally from the predesigned organic building block 4-tetrazole pyridine (4-TP) and Cd(II) as metal center using DMF as solvent. Cd-4TP-1 has a three-dimensional porous architecture where all the binding sites of Cd(II) are exclusively occupied by the nitrogen atoms from the mu(2)-tetrazolyl group or the pyridyl functionality of the 4-TP ligands. Cd-4TP-1 has Brunauer-Emmett-Teller (BET) and Langmuir surface areas of 472.2 and 728.6 m(2)/g, respectively, and shows 1.1 wt % H-2 (77 K) and 2.7 mmol/g CO2 uptake (273 K).

1 aPachfule, Pradip1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/porous-nitrogen-rich-cadmium-tetrazolate-based-metal-organic-framework-mof-h-2-and-co2-002511nas a2200181 4500008004100000022001400041245013100055210006900186260007100255300001400326490000700340520177900347100002102126700001402147700001902161700002002180856012902200 2011 eng d a1528-748300aSolvothermal synthesis, structure, and properties of metal organic framework isomers derived from a partially fluorinated link0 aSolvothermal synthesis structure and properties of metal organic a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcAPR a1215-12220 v113 a

Solvothermal reactions of Cu(NO3)(2) center dot 3H(2)O with 4,4'-(hexafluoroisopropylidene) bis(benzoic acid) (C17H10F6O4, H(2)hfbba) and terminal monodentate ligand 3-methyl pyridine (3-picoline/3-mepy) in the presence of N, N-dimethyl formamide (DMF) and N,N-diethyl formamide (DEF) solvents gave rise to two structurally different two-dimensional (2D) fluorinated metal organic frameworks (F-MOFs). The effect of the choice of solvent has been clearly reflected in the structures obtained. The F-MOFs reported in this paper are formulated as [Cu-2(hfbba)(2)(3-mepy)(2)] center dot (DMF)(2)(3-mepy) (F-MOF-4), [Cu-2(hfbba)(2)(3-mepy)(2)] (Cu-F-MOF-4B), and [Zn-2(hfbba)(2)(3-mepy)(2)] center dot (3-mepy) (Zn-F-MOF-4B) which displays interesting 2D structures with and without interdigitation depending on the solvent used. The structures of these F-MOFs have been determined by X-ray crystallography and further identified by IR spectroscopy, powder X-ray diffraction (PXRD), and thermogravimetric analysis (TGA). The effect of interdigitation has been reflected in the gas adsorption and magnetic properties of these F-MOFs. These F-MOFs also show comparable H-2 and CO2 uptake depending on their structural variation. Temperature-dependent magnetic susceptibility measurements over a wide range of temperatures exhibit dominantly short-range antiferromagnetic behavior, with weak ferromagnetic behavior showing up at very low temperatures, which is evident from opening of the hysteresis loop with a finite value of coercivity in both F-MOF-4 and Cu-F-MOF-4B. We observed a smaller value of mu(eff) per Cu atom and coercivity in Cu-F-MOF-4B than the F-MOF-4 due to relatively larger distances between the neighboring dicopper paddlewheel secondary building unit.

1 aPachfule, Pradip1 aDas, Raja1 aPoddar, Pankaj1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/solvothermal-synthesis-structure-and-properties-metal-organic-framework-isomers-derived-001368nas a2200205 4500008004100000022001400041245010800055210006900163260010200232300001200334490000800346520054500354653001600899653002100915653002900936653002600965100002100991700002001012856013001032 2011 eng d a0011-389100aStructural and gas adsorption study of a two-dimensional copper-tetrazole based metal-organic framework0 aStructural and gas adsorption study of a twodimensional copperte aC V RAMAN AVENUE, SADASHIVANAGAR, P B \#8005, BANGALORE 560 080, INDIAbINDIAN ACAD SCIENCEScOCT a894-8990 v1013 a

A new two-dimensional (2D) metal organic framework, Cu-1(4-TBA)(1)(DMBP)(1).DMF (Cu-TBA-3), has been synthesized under solvothermal condition from transition metal cation Cu(II), predesigned ligand 4-(1H-tetrazole-5-yl)benzoic acid (4-TBA) and coligand 4,4'-dimethy1-2,2'-bipyridine (DMBP). The structure has been determined by single crystal X-ray crystallography which shows layered 2D structure with square shaped one-dimensional channels. Cu-TBA-3 shows 0.69 wt% H-2 (at 77 K, 1 atm) and 1.65 mmol/g CO2 (at 298 K, 1 atm) uptake.

10aCO2 capture10aHydrogen storage10ametal-organic frameworks10amicroporous materials1 aPachfule, Pradip1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/structural-and-gas-adsorption-study-two-dimensional-copper-tetrazole-based-metal-organic-002006nas a2200193 4500008004100000022001400041245013000055210006900185260007100254300001200325490000700337520124800344100001701592700001401609700002101623700001901644700002001663856012901683 2011 eng d a1528-748300aStructural and selective gas adsorption studies of polyoxometalate and tris(ethylenediamine) cobalt(III) based ionic crystals0 aStructural and selective gas adsorption studies of polyoxometala a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcJAN a139-1460 v113 a

Seven new ionic solids built on polyoxometalate anions and [Co(en)(3)](3+) cations, namely, [Co(en)(3)Mo(8)O(26)(H(3)O)-(Cl)](DMF)(4)(H(2)O) (Co-Mo(8)-DMF), [alpha-PW(12)O(40)][Co(en)(3)]center dot 6DMF (Co-W(12)P-DMF), [alpha-PW(12)O(40)][Co(en)(3)]center dot 6DEF (Co-W(12)P-DEF), [alpha-PMo(12)O(40)][Co(en)(3)]center dot 5.5DMF (Co-Mo(12)P-DMF), [alpha-PMo(12)O(40)][Co(en)(3)]center dot 6DEF (Co-Mo(12)P-DEF), [alpha-SiW(12)O(40)]-[Co(en)(3)](3/2)[Cl](1/2)center dot 6DMF center dot 3H(2)O (Co-W(12)Si-DMF), and [alpha-SiW(12)O(40)][Co(en)(3)]center dot 6DEF (Co-W(12)Si-DEF), have been synthesized from nonaqueous (DMF/DEF) media and characterized by single-crystal X-ray diffraction. We attempt to understand if [Co(en)(3)](3+) cations used in these reaction systems play a crucial role in controlling the assembly of these crystals. These ionic solids, after removal of the DMF or DEF molecules, are found to exhibit size selective H(2) adsorption properties over N(2). The amount of hydrogen adsorption was influenced by POM anion types and their orientations. CoMo(12)P-DEF has the highest (0.9 wt %) H(2) uptake, and CoW(12)P-DEF has the lowest (0.4 wt %) uptake among the series when the adsorbate pressure approached 1 atm.

1 aDey, Chandan1 aDas, Raja1 aPachfule, Pradip1 aPoddar, Pankaj1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/structural-and-selective-gas-adsorption-studies-polyoxometalate-and-trisethylenediamine-002047nas a2200253 4500008004100000022001400041245012300055210006900178260007100247300001400318490000700332520110900339653001901448653001701467653002101484653002801505653002501533100002101558700001601579700002701595700001901622700002001641856013201661 2011 eng d a0897-475600aStructural isomerism and effect of fluorination on gas adsorption in copper-tetrazolate based metal organic frameworks0 aStructural isomerism and effect of fluorination on gas adsorptio a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcJUN a2908-29160 v233 a

Synthesis, structure, and gas adsorption properties of three Metal Organic Frameworks (MOFs) synthesized from predesigned ligands 4-(1H-tetrazole-5-yl)benzoic acid (4-TBA) and 2-fluoro-4-(1H-tetrazole-5-yl)benzoic acid (2F-4-TBA) along with Cu(II) as an metal precursor has been reported. Among these MOFs, Cu-9(4-TBA)(10)(C2H5OH)(2) (Cu-TBA-1) and Cu-2(4-TBA)(2)(DMF)(C2H5OH) (Cu-TBA-2) are structural isomers. Whereas, Cu-2(4-TBA)(2)(DMF)(C2H5OH) (Cu-TBA-2) and Cu-2(2-F-4-TBA)(2)(DMF)(2) (Cu-TBA-2F) have similar crystal structure. N-2 adsorption isotherms of the activated sample of Cu-TBA-1 and -2 exhibit types-I sorption behavior with a Langmuir and Brunauer-Emmett-Teller (BET) surface area of 686, 402 m(2)/g and 616, 356 m(2)/g, respectively. It is noteworthy that Cu-TBA-1 and -2 adsorbs 1.16 and, 1.54 wt % H-2, while Cu-TBA-2F adsorbs 0.67 wt % at 77 K and 1 atm. On the other hand, Cu-TBA-1 and -2 adsorb 3.08 and 2.54 mmol/g, while Cu-TBA-2F adsorbs 1.27 mmol/g of CO2 at 298 K and 1 bar pressure. H-2 adsorption sites in Cu-TBA-2 and -2F have been analyzed by molecular simulation.

10aCO2 adsorption10afluorination10aHydrogen storage10aMetal-organic framework10astructural isomerism1 aPachfule, Pradip1 aChen, Yifei1 aSahoo, Subash, Chandra1 aJiang, Jianwen1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/structural-isomerism-and-effect-fluorination-gas-adsorption-copper-tetrazolate-based-metal-002015nas a2200181 4500008004100000022001400041245012300055210006900178260007100247300001400318490000700332520129100339100002101630700001401651700001901665700002001684856012901704 2011 eng d a0020-166900aStructural, magnetic, and gas adsorption study of a series of partially fluorinated metal-organic frameworks (HF-MOFs)0 aStructural magnetic and gas adsorption study of a series of part a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcMAY a3855-38650 v503 a

Four new partially fluorinated metal organic frameworks (HF-MOFs) have been synthesized under different solvothermal conditions (H2O or dimethylformamide (DMF)) from transition metal cations [Co2+ and Mn2+], 3-methyl pyridine (3-mepy) and 4,4'-(hexafluoroisopropylidene) bis(benzoic acid) (C17H10F6O4, H(2)hfbba), to determine the influence of reaction conditions on the formation of MOFs. This family of materials displays a striking degree of structural similarity depending on the solvent of synthesis. HF-MOFs synthesized from H2O [Co-HFMOF-W, Co(liffiba)(3-mepy)(H2O) and Mn-HFMOF-W, Mn(hfbba)(3-mepy)(H2O)] contain three-dimensional connectivity whereas HF-MOFs synthesized from DmF Co-HFMOF-D, [Co-2(hfbba)(2)(3-mepy)(2)]center dot(DMF)(3) and Mn-HFMOE-D, [Mn-2(hfbba)(2)(3-mepy)]center dot(H2O) are two-dimensional in nature. Co-HFMOF-W and Mn-HFMOF-W are iso-structural polymeric materials. Thermal gravimetric analysis performed on as-synthesized HP-MOFs revealed that these compounds have high thermal stability (similar to 350 degrees C). The continuous decrease of the chi T product with decreasing T for Co-HFMOF-D and Co-HFMOF-W respectively indicates the presence of antiferromagnetic exchange interaction between two Co2+ (S = 3/2) metal centers within a duster.

1 aPachfule, Pradip1 aDas, Raja1 aPoddar, Pankaj1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/structural-magnetic-and-gas-adsorption-study-series-partially-fluorinated-metal-organic-002010nas a2200193 4500008004100000022001400041245009200055210006900147260007100216300001400287490000700301520128800308100002001596700002001616700002101636700001501657700002001672856012401692 2011 eng d a0020-166900aStructure and gas sorption behavior of a new three dimensional porous magnesium formate0 aStructure and gas sorption behavior of a new three dimensional p a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcFEB a1392-14010 v503 a

A new three-dimensional magnesium formate polymorph, namely, gamma-[Mg-3(O2CH)(6)] has been synthesized via in situ formate anion generation method. gamma-Mg-formate crystallizes in space group Pbcn, and structural determination by X-ray single crystal diffraction reveals a three-dimensional network of Mg2+ linked by formate anions. All formate anions possess similar binding mode to the metal center with one oxygen of a particular formate anion binds to one metal center (mu(1) oxygen) and other oxygen binds to two metal centers (mu(2) oxygen). N-2 adsorption studies indicate that the framework displays permanent porosity. The specific surface area of gamma-Mg-formate (BET, 120 m(2) gm(-1)) is lower than the alpha- polymorph (BET, 150 m(2) gm(-1)). However, the initial hydrogen uptake of gamma-Mg-formate reached almost 1.0 wt % when the adsorbate pressure approached 760 Torr at 77 K. This is higher than the hydrogen uptake of alpha-Mg-formate (0.6 wt %). gamma-Mg-formate, shows a moderate affinity and capacity for CO2 (3.4 angstrom kinetic diameter) at 298 K. The CO2 uptake at 760 Torr is 2.01 mmol gm(-1)(47.0 cc gm(-1)). Although this CO2 uptake is somewhat modest, it compares well with the CO2 uptake of several Mg-MOFs and ZIFs reported in the literature.

1 aMallick, Arijit1 aSaha, Subhadeep1 aPachfule, Pradip1 aRoy, Sudip1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/structure-and-gas-sorption-behavior-new-three-dimensional-porous-magnesium-formate-001296nas a2200217 4500008004100000022001400041245013100055210006900186260011200255300001200367490000700379520042600386653002200812653001500834653002200849653002700871100001800898700002000916700001700936856012500953 2011 eng d a0019-452200aSynthesis and structural characterization of a solvated dimorph of a hydrazonato-oxovanadium(v) complex with [OV(mu-O)VO] core0 aSynthesis and structural characterization of a solvated dimorph  a5-A, NEW PALI RD, PO BOX 91, NEAR HOTEL TAJ HARI MAHAL, JODHPUR, 342 003, INDIAbSCIENTIFIC PUBL-INDIAcJUL a937-9410 v883 a

In this paper we report the synthesis and structural characterization of a different monoclinic variety of the title complex [V2O3(L)(2)], incorporating the doubly deprotonated benzoyl hydrazone of 5-chloro-2-hydroxyacetophenone (H2L) with P2(1)/c space group that showed some differences in bonding patterns in the solid state with respect to its another monoclinic variety with C2/c space group reported earlier.

10acrystal structure10adimorphism10ahydrazone complex10aOxovanadium(v) complex1 aMondal, Bipul1 aBanerjee, Rahul1 aGhosh, Tapas uhttps://library.ncl.res.in/content/synthesis-and-structural-characterization-solvated-dimorph-hydrazonato-oxovanadiumv-001301nas a2200169 4500008004100000022001400041245012800055210006900183260011000252300001400362490000700376520056200383100001700945700002100962700002000983856012801003 2011 eng d a1359-734500aTemplate induced structural isomerism and enhancement of porosity in manganese(II) based metal-organic frameworks (Mn-MOFs)0 aTemplate induced structural isomerism and enhancement of porosit aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcJUN a7674-76760 v473 a

Three new metal-organic framework isomers have been synthesized by using the organic linker 5-triazole isophthalic acid and Mn(NO3)(2)center dot xH(2)O. Structural conversions from non-porous to porous MOFs due to the template effect have been observed. The cross-sectional pore apertures of the resulting Mn-MOFs are comparable to the molecular dimensions of the template (pyrazine and 4,40-bipyridine). The periodic increased porosity in Mn-MOFs depending on the size of the template used has been further confirmed by the CO2 adsorption isotherms.

1 aPanda, Tamas1 aPachfule, Pradip1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/template-induced-structural-isomerism-and-enhancement-porosity-manganeseii-based-metal-000882nas a2200169 4500008004100000022001400041245010900055210006900164260011000233300001400343490000700357520015900364100001700523700002700540700002000567856012500587 2012 eng d a1359-734500aAlkali earth metal (Ca, Sr, Ba) based thermostable metal-organic frameworks (MOFs) for proton conduction0 aAlkali earth metal Ca Sr Ba based thermostable metalorganic fram aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcMAR a4998-50000 v483 a

{Three new alkaline earth metal based MOFs have been synthesized by using 4,4'-sulfobisbenzoic acid (SBBA) and alkaline earth metal salts M(NO3)(2)

1 aKundu, Tanay1 aSahoo, Subash, Chandra1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/alkali-earth-metal-ca-sr-ba-based-thermostable-metal-organic-frameworks-mofs-proton-002288nas a2200253 4500008004100000022001400041245005500055210005500110260011000165300001400275490000700289520142600296653003001722653002701752653002101779653002901800653001601829653002301845100002001868700001901888700001801907700002001925856008901945 2012 eng d a0376-471000aCarbon dioxide capture by metal organic frameworks0 aCarbon dioxide capture by metal organic frameworks aDR K S KRISHNAN MARG, PUSA CAMPUS, NEW DELHI 110 012, INDIAbNATL INST SCIENCE COMMUNICATION-NISCAIRcSEP a1223-12300 v513 a

The design and synthesis of functionalized metal organic framework materials (MOFs) for reversible physisorption of CO2 is discussed. This strategy of CO2 adsorption in MOFs requires less energy for regeneration than materials relying on chemisorption. As a result the MOFs have received considerable attention as sorbent materials for strategic gases such as CO2 and H,. In this review, we have discussed different MOFs and hybrid materials containing MOFs which can adsorb CO2 at room temperature. In order to achieve high adsorption capacity, fast CO2 adsorption-desorption and low energy requirement for regeneration are necessary. Several avenues for increasing the CO2 adsorption capacity of such materials, for instance, introduction of open metal sites and the use of ligand molecules with specific functionalities (like -OH or -NH2) have been described. It has been observed that CO2 loading capacity of MOFs increases with functionalization. Herein, we have discussed how N-containing and fluorinated MOFs are designed to achieve higher CO2 loading than their non-functionalized counterparts. Nanocarbons (e.g. carbon nanotubes, carbon nanofibres, etc.) are porous materials and a blend of these porous materials with porous MOFs or porous carbon derived from MOFs may act as a better adsorbate than even the pure materials. Enhancement of CO2 loading by nanocarbon-MOF hybrid material is also discussed.

10aCarbon dioxide adsorbents10aCarbon dioxide capture10ahybrid materials10aMetal organic frameworks10aNanocarbons10aPorous nanocarbons1 aSaha, Subhadeep1 aChandra, Suman1 aGarai, Bikash1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/carbon-dioxide-capture-metal-organic-frameworks-002972nas a2200253 4500008004100000022001400041245012000055210006900175260011000244300001400354490000600368520200200374100001602376700002202392700001802414700002102432700002202453700002002475700002002495700002102515700003202536700002202568856012802590 2012 eng d a1744-683X00aCompetition between gelation and crystallisation of a peculiar multicomponent liquid system based on ammonium salts0 aCompetition between gelation and crystallisation of a peculiar m aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcFEB a3446-34560 v83 a

An exemplar competition between gelation and crystallisation phenomena was examined with an unusual synergistic multicomponent (organo) gelator solution (MGS), which consists of a well-defined methanolic solution of (1R, 2R)-1,2-diaminocyclohexane L-tartrate containing 2.4 equiv. of concentrated hydrochloric acid. The optimal composition of the MGS was determined through meticulous solubility, gelation and structural studies, which support a transient gelation mechanism based on the kinetic self-assembly of the tartrate salt driven by hydrogen-bonding interactions, involving ammonium nitrogen donors and hydroxyl oxygen acceptors, and electrostatic interactions. The hydrochloric acid is involved in the solubilisation of the salt through an ionic dissociation-exchange process, which ends up with the formation-precipitation of (1R, 2R)-1,2-diaminocyclohexane dihydrochloride. As a consequence, an irreversible destruction of the gel takes place, which indicates the metastable nature of this phase that cannot be accessed from the thermodynamically equilibrated state. Gelation of a variety of oxygenated and nitrogenated solvents with moderate polarity occurred efficiently using extremely low MGS concentrations at low temperatures, and the gel phase was confirmed by dynamic rheological measurements. Several features make the described MGS unique: (1) it is a multicomponent solution where each component and its stoichiometry play a key role in the reproducible formation and stabilization of the gels; (2) it is formed by simple, small, and commercially available chiral building blocks (dissolved in a well-defined solvent system), which are easily amenable for further modifications; (3) the gelation phenomenon takes place efficiently at low temperature upon warming up the isotropic solution, conversely to the typical gel preparation protocol; and (4) the formed organogels are not thermoreversible despite the non-covalent interactions that characterize the 3D-network.

1 aKapoor, Iti1 aSchoen, Eva-Maria1 aBachl, Jurgen1 aKuehbeck, Dennis1 aCativiela, Carlos1 aSaha, Subhadeep1 aBanerjee, Rahul1 aRoelens, Stefano1 aMarrero-Tellado, Jose, Juan1 aDiaz, David, Diaz uhttps://library.ncl.res.in/content/competition-between-gelation-and-crystallisation-peculiar-multicomponent-liquid-system-002184nas a2200229 4500008004100000022001400041245012900055210006900184260007700253300001600330490000700346520130900353653001101662653002101673653002901694653002601723653000901749100002101758700002301779700002001802856013201822 2012 eng d a0947-653900aControl of porosity by using isoreticular zeolitic imidazolate frameworks (IRZIFs) as a template for porous carbon synthesis0 aControl of porosity by using isoreticular zeolitic imidazolate f aBOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANYbWILEY-V C H VERLAG GMBHcSEP a11399-114080 v183 a

Herein, by using isoreticular zeolitic imidazolate frameworks (IRZIFs) as a template, we report the synthesis, morphology, and gas adsorption properties of porous carbon synthesized by a nanocasting method at 1000 degrees C, in which furfuryl alcohol (FA) was used as a carbon source. By using IRZIFs with variable porosity as templates, we could achieve control over the carbon porosity and H-2 and CO2 uptake. The resultant microporous carbon C-70, synthesized by using ZIF-70 as the template, is the most porous (Brunauer-Emmett-Teller (BET) surface area 1510 m(2)g(-1)). Carbon C-68, synthesized by using ZIF-68, has moderate porosity (BET surface area 1311 m(2)g(-1)), and C-69, synthesized by using ZIF-69, has the lowest porosity in this series (BET surface area 1171 m(2)g(-1)). The porous carbons C-70, C-68, and C-69, which have graphitic texture, have promising H2 uptake capacities of 2.37, 2.15, and 1.96 wt%, respectively, at 77 K and 1 atm. Additionally, C-70, C-68, and C-69 show CO2 uptake capacities of 5.45, 4.98, and 4.54 mmolg(-1), respectively, at 273 K and 1 atm. The gas uptake trends shown by C-70, C-68, and C-69 clearly indicate the dependence of carbon porosity on the host template. Moreover, the as-synthesized carbons C-70, C-68, and C-69 show variable conductivity.

10aCarbon10aHydrogen storage10ametal-organic frameworks10amicroporous materials10azinc1 aPachfule, Pradip1 aBiswal, Bishnu, P.1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/control-porosity-using-isoreticular-zeolitic-imidazolate-frameworks-irzifs-template-porous-001017nas a2200169 4500008004100000022001400041245011500055210006900170260011000239300001400349490000700363520029000370100002000660700001700680700002000697856013000717 2012 eng d a1359-734500aCorrelation between coordinated water content and proton conductivity in Ca-BTC-based metal-organic frameworks0 aCorrelation between coordinated water content and proton conduct aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcJUL a8829-88310 v483 a

Proton conductivity of five Ca-based MOFs which depends on the amount of water molecules coordinated to the Ca-centres has been reported. These MOFs show high temperature proton conductivity due to the strong hydrogen bonding between the lattice and coordinated water molecules.

1 aMallick, Arijit1 aKundu, Tanay1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/correlation-between-coordinated-water-content-and-proton-conductivity-ca-btc-based-metal-002454nas a2200205 4500008004100000022001400041245014800055210006900203260011000272300001600382490000700398520159900405100002002004700002202024700001702046700001802063700002202081700002002103856012502123 2012 eng d a0959-942800aFine-tuning the balance between crystallization and gelation and enhancement of CO2 uptake on functionalized calcium based MOFs and metallogels0 aFinetuning the balance between crystallization and gelation and  aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcMAY a14951-149630 v223 a

The synthesis, structure, gas adsorption and catalytic properties of a new 3D porous, crystalline metal-organic framework (Ca-5TIA-MOF) as well as stable viscoelastic metallogels (Ca-5TIA-Gel) are reported. Remarkably, the preparation of both types of materials can be carried out starting from the same organic ligand (i.e. 5-(1,2,4-triazoleyl) isophthalic acid (5TIA)), divalent metal ion (i.e. Ca(II)) and organic solvent (i.e. DMF). In this particular case, the presence of water in the solvent system favors the formation of a crystalline MOF, whereas a pure organic solvent induces gelation. The characterization of the materials was carried out using a series of techniques including XRD, FT-IR, TGA, TEM, SEM, SAXS and dynamic rheology. Experimental PXRD peaks of both Ca-5TIA-xerogel and Ca-5TIA-MOF matched reasonably well with simulated PXRD, suggesting the presence of, at least, some common structural elements in the 3D networks of both xerogel and crystalline phases. Moreover, the nature of the metal counteranion was found to have a critical influence on the gelation phenomenon. To the best of our knowledge, this report describes unprecedented Ca-based LMW-metallogels, as well as the first porous Ca-based MOF, which shows adsorption capacity for CO2 at 1 atm pressure. Interestingly, Ca-5TIA-xerogel presented 20% higher CO2-uptake than the crystalline Ca-5TIA-MOF at 1 atm and 298 K. Both Ca-5TIA-MOF and Ca-5TIA-Gel also displayed a modest catalytic activity towards the hydrosilylation of benzaldehyde, with slightly better performance for the gel phase material.

1 aMallick, Arijit1 aSchoen, Eva-Maria1 aPanda, Tamas1 aSreenivas, K.1 aDiaz, David, Diaz1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/fine-tuning-balance-between-crystallization-and-gelation-and-enhancement-co2-uptake-001739nas a2200253 4500008004100000022001400041245009700055210006900152260007700221300001200298490000700310520084200317653001101159653001301170653002101183653002901204653002601233653002201259100002101281700001601302700001901318700002001337856012801357 2012 eng d a0947-653900aFluorinated metal-organic frameworks: advantageous for higher H-2 and CO2 adsorption or not?0 aFluorinated metalorganic frameworks advantageous for higher H2 a aBOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANYbWILEY-V C H VERLAG GMBHcJAN a688-6940 v183 a

The synthesis, structure, and gas adsorption properties of three new metalorganic frameworks (MOFs) designed from isonicotinic acid (INA) and its fluorinated analogue 3-fluoroisonicotinic acid (FINA) along with CoII as the metal center have been reported. Co-INA-1 ([Co3(INA)4(O)(C2H5OH)3][NO3].C2H5OH.3?H2O; INA=isonicotinic acid) and Co-INA-2 ([Co(INA)2].DMF) are structural isomers as are Co-FINA-1 ([Co3(FINA)4(O)(C2H5OH)2].H2O; FINA=3-fluoroisonicotinic acid) and Co-FINA-2 ([Co(FINA)2].H2O), but the most important thing to note here is that Co-INA-1 and Co-FINA-1 are isostructural as are Co-INA-2 and Co-FINA-2. The effect of partial introduction of fluorine atoms into the framework on the gas uptake properties of MOFs having similar structures has been analyzed experimentally and computationally in isostructural MOFs.

10acobalt10afluorine10aHydrogen storage10ametal-organic frameworks10amicroporous materials10aX-ray diffraction1 aPachfule, Pradip1 aChen, Yifei1 aJiang, Jianwen1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/fluorinated-metal-organic-frameworks-advantageous-higher-h-2-and-co2-adsorption-or-not-001869nas a2200217 4500008004100000022001400041245010900055210006900164260011200233300001400345490000700359520100900366653001901375653001901394653001701413653002101430653002801451653002501479100002001504856012701524 2012 eng d a0019-452200aFunctionalized metal organic frameworks (MOFs) for reversible gas storage and sequestration applications0 aFunctionalized metal organic frameworks MOFs for reversible gas  a5-A, NEW PALI RD, PO BOX 91, NEAR HOTEL TAJ HARI MAHAL, JODHPUR, 342 003, INDIAbSCIENTIFIC PUBL-INDIAcSEP a1197-12020 v893 a

The decreasing amount of fossil fuels and increasing threat of global warming from the pollutants have driven the search for clean energy source. Energy sources from fossil fuels still remain in the forefront despite being a major source of increased CO2 content in the atmosphere. Metal Organic Frameworks (MOFs) have emerged as promising materials for hydrogen storage and CO2 sequestration. Several factors influencing the hydrogen uptake of porous MOFs such as surface area, catenation, ligand functionalization, doping with alkali metals and unsaturated metal centers have been extensively studied. Similarly, well defined periodicity and tunable pore sizes along with less basic amino-functionalized MOFs enables them favorable for fast and reversible CO2 gas adsorption at low partial pressure and room temperature. In this review we present diverse aspects of metal organic frameworks like fluorination, amino functionalization for high hydrogen storage and CO2 sequestration capabilities.

10acarbon capture10aCO2 adsorption10afluorination10aHydrogen storage10aMetal-organic framework10astructural isomerism1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/functionalized-metal-organic-frameworks-mofs-reversible-gas-storage-and-sequestration-002013nas a2200181 4500008004100000022001400041245013200055210006900187260011000256300001200366490000600378520124200384100001401626700002101640700002001661700001901681856013101700 2012 eng d a2040-336400aMetal and metal oxide nanoparticle synthesis from metal organic frameworks (MOFs): finding the border of metal and metal oxides0 aMetal and metal oxide nanoparticle synthesis from metal organic  aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcDEC a591-5990 v43 a

Herein, for the first time, we report a generalized strategy for the successful synthesis of highly crystalline metal and metal oxide nanoparticles embedded in a carbon matrix by the controlled thermolysis of metal organic frameworks (MOFs). The rationalized synthesis strategy of a broad range of metal and metal oxides nanoparticles, such as Cu/CuO, Co/Co3O4, ZnO, Mn2O3, MgO and CdS/CdO, by thermolysis of MOFs demonstrates for the first time that metal ions with a reduction potential of -0.27 volts or higher present in MOFs always form pure metal nanoparticles during thermolysis in N-2, whereas metal ions with a reduction potential lower than -0.27 volts form metal oxide nanoparticles during thermolysis in N-2. Another point of interest is the fact that we have found a unique relationship between the nanoparticle size and the distance between the secondary building units inside the MOF precursors. Interestingly, the crystallinity of the carbon matrix was also found to be greatly influenced by the environment (N-2 and air) during thermolysis. Moreover, these nanoparticles dispersed in a carbon matrix showed promising H-2 and CO2 adsorption properties depending on the environment used for the thermolysis of MOFs.

1 aDas, Raja1 aPachfule, Pradip1 aBanerjee, Rahul1 aPoddar, Pankaj uhttps://library.ncl.res.in/content/metal-and-metal-oxide-nanoparticle-synthesis-metal-organic-frameworks-mofs-finding-border-001170nas a2200181 4500008004100000245020700041210006900248260000800317300001400325490000700339520040900346100002500755700001800780700002100798700002000819700001900839856013000858 2012 eng d00aMetal [Zn(II), Cd(II)], 1,10-phenanthroline containing coordination polymers constructed on the skeleton of polycarboxylates: synthesis, characterization, microstructural, and CO2 gas adsorption studies0 aMetal ZnII CdII 110phenanthroline containing coordination polyme cNOV a5311-53190 v123 a

{Four new coordination polymers have been obtained by the reaction of metal [Zn(II), Cd(II)], 1,10-phenanthroline separately with two carboxylic acids, [biphenyl-4,4'-dicarboxylic acid (4,4'-H(2)BDA),and 4,4'-azodibenzoic acid (4,4'-H(2)ADA)]. The crystal structures of the resulting complexes of type {[Zn(4,4'-BDA)(Phen)(2)center dot HCON(CH3)(2)}(n) (1), {[Cd(4,4'-BDA)(Phen)](2)center dot H2O\

1 aYadav, Pramod, Kumar1 aKumari, Niraj1 aPachfule, Pradip1 aBanerjee, Rahul1 aMishra, Lallan uhttps://library.ncl.res.in/content/metal-znii-cdii-110-phenanthroline-containing-coordination-polymers-constructed-skeleton-001574nas a2200193 4500008004100000022001400041245012400055210006900179260011000248300001400358490000700372520077000379100002201149700002001171700002101191700002001212700001801232856013001250 2012 eng d a1477-922600aNitrogen-rich porous covalent imine network (CIN) material as an efficient catalytic support for C-C coupling reactions0 aNitrogenrich porous covalent imine network CIN material as an ef aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcDEC a1304-13110 v413 a

In an effort to expand the realm of possibilities of nitrogen-rich porous materials that could be used in catalysis, herein we report the synthesis of a new highly nitrogen rich (ca. 45%) porous covalent imine network (CIN-1) material employing simple Schiff base chemistry and further grafting its surface with palladium. Pd-loaded CIN-1 support acts as a truly heterogeneous catalyst towards Suzuki C-C coupling reaction between aryl halides with arylboronic acids. High surface area and excellent accessibility of the catalytic sites make it very efficient for heterogeneous catalysis. The stability of the catalyst due to intimate contact between nitrogen-rich organic support and metal allows several reuses with only a minor loss in catalytic activity.

1 aBhunia, Manas, K.1 aDas, Swapan, K.1 aPachfule, Pradip1 aBanerjee, Rahul1 aBhaumik, Asim uhttps://library.ncl.res.in/content/nitrogen-rich-porous-covalent-imine-network-cin-material-efficient-catalytic-support-c-c-001066nas a2200181 4500008004100000022001400041245012000055210006900175260011000244300001400354490000700368520029300375100002100668700002100689700002400710700002000734856013000754 2012 eng d a1359-734500aOne-dimensional confinement of a nanosized metal organic framework in carbon nanofibers for improved gas adsorption0 aOnedimensional confinement of a nanosized metal organic framewor aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcDEC a2009-20110 v483 a

The loading of a Zn-terephthalate based MOF in the inner cavity as well as on the outer walls of a hollow carbon nanofiber (CNF) creates MOF@CNF hybrids. This hybrid ``MOF@CNF'' displayed improved thermal stability as well as gas adsorption compared to the individual counterparts.

1 aPachfule, Pradip1 aBalan, Beena, K.1 aKurungot, Sreekumar1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/one-dimensional-confinement-nanosized-metal-organic-framework-carbon-nanofibers-improved-003256nas a2200685 4500008004100000022001400041245005700055210005200112260007100164300001400235490000700249520122200256100002801478700002001506700002301526700001901549700002401568700003001592700002501622700002401647700001801671700002501689700002501714700002101739700002701760700001701787700002501804700002101829700002001850700001801870700001801888700001901906700002201925700002101947700002301968700001601991700002502007700001902032700001702051700002802068700002202096700002102118700002002139700001502159700001802174700001602192700002302208700002402231700002002255700002502275700002602300700002302326700001902349700002202368700002502390700002302415700002102438700002702459856008402486 2012 eng d a1528-748300aPolymorphs, salts, and cocrystals: what's in a name?0 aPolymorphs salts and cocrystals whats in a name a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcMAY a2147-21520 v123 a

The December 2011 release of a draft United States Food and Drug Administration (FDA) guidance concerning regulatory classification of pharmaceutical cocrystals of active pharmaceutical ingredients (APIs) addressed two matters of topical interest to the crystal engineering and pharmaceutical science communities: (1) a proposed definition of cocrystals; (2) a proposed classification of pharmaceutical cocrystals as dissociable ``API-excipient'' molecular complexes. The Indo U.S. Bilateral Meeting sponsored by the Indo-U.S. Science and Technology Forum titled The Evolving Role of Solid State Chemistry in Pharmaceutical Science was held in Manesar near Delhi, India, from February 2-4, 2012. A session of the meeting was devoted to discussion of the FDA guidance draft. The debate generated strong consensus on the need to define cocrystals more broadly and to classify them like salts. It was also concluded that the diversity of API crystal forms makes it difficult to classify solid forms into three categories that are mutually exclusive. This perspective summarizes the discussion in the Indo-U.S. Bilateral Meeting and includes contributions from researchers who were not participants in the meeting.

1 aAitipamula, Srinivasulu1 aBanerjee, Rahul1 aBansal, Arvind, K.1 aBiradha, Kumar1 aCheney, Miranda, L.1 aChoudhury, Angshuman, Roy1 aDesiraju, Gautam, R.1 aDikundwar, Amol, G.1 aDubey, Ritesh1 aDuggirala, Nagakiran1 aGhogale, Preetam, P.1 aGhosh, Soumyajit1 aGoswami, Pramod, Kumar1 aGoud, Rajesh1 aJetti, Ram, R. K. R.1 aKarpinski, Piotr1 aKaushik, Poonam1 aKumar, Dinesh1 aKumar, Vineet1 aMoulton, Brian1 aMukherjee, Arijit1 aMukherjee, Gargi1 aMyerson, Allan, S.1 aPuri, Vibha1 aRamanan, Arunachalam1 aRajamannar, T.1 aReddy, Malla1 aRodriguez-Hornedo, Nair1 aRogers, Robin, D.1 aRow, T., N. Guru1 aSanphui, Palash1 aShan, Ning1 aShete, Ganesh1 aSingh, Amit1 aSun, Changquan, C.1 aSwift, Jennifer, A.1 aThaimattam, Ram1 aThakur, Tejender, S.1 aThaper, Rajesh, Kumar1 aThomas, Sajesh, P.1 aTothadi, Srinu1 aVangala, Venu, R.1 aVariankaval, Narayan1 aVishweshwar, Peddy1 aWeyna, David, R.1 aZaworotko, Michael, J. uhttps://library.ncl.res.in/content/polymorphs-salts-and-cocrystals-whats-name-002045nas a2200661 4500008004100000022001400041245008000055210006900135260007100204300001400275490000700289100002800296700002000324700002300344700001900367700002400386700003000410700002500440700002400465700001800489700002500507700002500532700002100557700002700578700001700605700002500622700002100647700002000668700001800688700001800706700001900724700002200743700002100765700002300786700001600809700002500825700001900850700001700869700002800886700002200914700002100936700002000957700001500977700001800992700001601010700002301026700002401049700002001073700002501093700002601118700002301144700001901167700002201186700002301208700002101231700002701252856010401279 2012 eng d a1528-748300aPolymorphs, salts and cocrystals: what's in a name? (vol 12, pg 2147, 2012)0 aPolymorphs salts and cocrystals whats in a name vol 12 pg 2147 2 a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcAUG a4290-42910 v121 aAitipamula, Srinivasulu1 aBanerjee, Rahul1 aBansal, Arvind, K.1 aBiradha, Kumar1 aCheney, Miranda, L.1 aChoudhury, Angshuman, Roy1 aDesiraju, Gautam, R.1 aDikundwar, Amol, G.1 aDubey, Ritesh1 aDuggirala, Nagakiran1 aGhogale, Preetam, P.1 aGhosh, Soumyajit1 aGoswami, Pramod, Kumar1 aGoud, Rajesh1 aJetti, Ram, R. K. R.1 aKarpinski, Piotr1 aKaushik, Poonam1 aKumar, Dinesh1 aKumar, Vineet1 aMoulton, Brian1 aMukherjee, Arijit1 aMukherjee, Gargi1 aMyerson, Allan, S.1 aPuri, Vibha1 aRamanan, Arunachalam1 aRajamannar, T.1 aReddy, Malla1 aRodriguez-Hornedo, Nair1 aRogers, Robin, D.1 aRow, T., N. Guru1 aSanphui, Palash1 aShan, Ning1 aShete, Ganesh1 aSingh, Amit1 aSun, Changquan, C.1 aSwift, Jennifer, A.1 aThaimattam, Ram1 aThakur, Tejender, S.1 aThaper, Rajesh, Kumar1 aThomas, Sajesh, P.1 aTothadi, Srinu1 aVangala, Venu, R.1 aVishweshwar, Peddy1 aWeyna, David, R.1 aZaworotko, Michael, J. uhttps://library.ncl.res.in/content/polymorphs-salts-and-cocrystals-whats-name-vol-12-pg-2147-2012-002492nas a2200253 4500008004100000022001400041245012000055210006900175260011000244300001600354490000700370520154000377100001901917700001401936700001801950700002001968700001901988700001802007700002002025700002202045700002402067700002102091856012602112 2012 eng d a0959-942800aPorous ZnO nanorod for targeted delivery of doxorubicin: in vitro and in vivo response for therapeutic applications0 aPorous ZnO nanorod for targeted delivery of doxorubicin in vitro aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcDEC a24145-241540 v223 a

Cancer cell specific targeted delivery (TDD) by porous nanocarrier is on a high role. Here in a simple route for the synthesis of porous ZnO nanorods (ZnO) has been demonstrated. ZnO expressed very high surface area of 305.14 m(2) g(-1) (S-BET) and uniformly distributed pores of 5 nm. In continuation ZnO has been fabricated with 3-aminophosphonic acid followed by folic acid to yield folate conjugated porous ZnO nanorod (ZnO-FA). High surface area, uniformly distributed pores on its surface make the nanocarrier suitable for high drug loading (88%) of the anticancer drug doxorubicin (DOX). A pH triggered drug release was observed with minimum release in pathophysical conditions. In vitro efficacy of DOX loaded ZnO-FA (ZnO-FA-DOX) has been evaluated against breast cancer cells MDA-MB-231, which is not possible alone by DOX or ZnO-FA. Targeted scaffold with pendant -NH2 group has been covalently bonded with fluorescent dye (RITC) for cellular uptake and imaging studies in MDA-MB-231 cells; the possible pathway for cancer regression has also been evaluated. Even in vivo acute and intravenous toxicological evaluation on murine model system complemented biocompatibility of ZnO-FA in TDD. All together we have collaged a template free synthesis of porous ZnO nanorod, successful targeting on to cancer cells, high drug loading, pH triggered drug release, in vitro efficacy of ZnO-FA-DOX against MDA-MB-231 cells and in vivo compatibility as well. We envisioned the future prospect of porous ZnO nanostructures in TDD.

1 aMitra, Shouvik1 aSubia, B.1 aPatra, Prasun1 aChandra, Sourov1 aDebnath, Nitai1 aDas, Sumistha1 aBanerjee, Rahul1 aKundu, Subhas, C.1 aPramanik, Panchanan1 aGoswami, Arunava uhttps://library.ncl.res.in/content/porous-zno-nanorod-targeted-delivery-doxorubicin-vitro-and-vivo-response-therapeutic-001311nas a2200205 4500008004100000022001400041245006900055210006900124260011000193300001600303490000600319520055600325100001900881700002000900700001700920700002000937700002400957700002100981856010301002 2012 eng d a2046-206900aRapid microwave synthesis of fluorescent hydrophobic carbon dots0 aRapid microwave synthesis of fluorescent hydrophobic carbon dots aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcOCT a12129-121310 v23 a

Fluorescent hydrophobic carbon dots (HCDs) have been fabricated from a poloxamer by a simple microwave assisted process within a few minutes for the first time. Small and distinct spherical HCDs emitted bright blue and green fluorescent light depending upon the excitation wavelength and were dispersed easily in a wide variety of organic solvents. HCDs exhibited excellent water resistant behavior with a contact angle of similar to 122 degrees enforcing good hydrophobic character which will be quite useful in potential surface applications.

1 aMitra, Shouvik1 aChandra, Sourov1 aKundu, Tanay1 aBanerjee, Rahul1 aPramanik, Panchanan1 aGoswami, Arunava uhttps://library.ncl.res.in/content/rapid-microwave-synthesis-fluorescent-hydrophobic-carbon-dots-000989nas a2200169 4500008004100000022001400041245010600055210006900161260011000230300001200340490000700352520027500359100001700634700001700651700002000668856013100688 2012 eng d a1359-734500aReversible phase transformation in proton conducting strandberg-type POM based metal organic material0 aReversible phase transformation in proton conducting strandbergt aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcNOV a266-2680 v483 a

A Cu(II)-phenanthroline connected Strandberg-type polyoxometalate based proton conducting MOF, Cu3Mo5P2, that contains one dimensional parallel water channels has been reported. Cu3Mo5P2 shows proton conduction at room temperature as well as elevated temperature.

1 aDey, Chandan1 aKundu, Tanay1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/reversible-phase-transformation-proton-conducting-strandberg-type-pom-based-metal-organic-001071nas a2200169 4500008004100000022001400041245010400055210006900159260011000228300001400338490000700352520036400359100001700723700001700740700002000757856012400777 2012 eng d a1359-734500aSelf-assembled one dimensional functionalized metal-organic nanotubes (MONTs) for proton conduction0 aSelfassembled one dimensional functionalized metalorganic nanotu aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcAPR a5464-54660 v483 a

Two self-assembled isostructural functionalized metal-organic nanotubes have been synthesized using 5-triazole isophthalic acid (5-TIA) with In(III) and Cd(II). In-and Cd-5TIA possess one-dimensional (1D) nanotubular architecture and show proton conductivity along regular 1D channels, measured as 5.35 x 10(-5) and 3.61 x 10(-3) S cm(-1) respectively.

1 aPanda, Tamas1 aKundu, Tanay1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/self-assembled-one-dimensional-functionalized-metal-organic-nanotubes-monts-proton-001774nas a2200181 4500008004100000022001400041245010400055210006900159260007100228300001000299490000700309520108200316100001701398700001401415700001901429700002001448856012401468 2012 eng d a1528-748300aSolid phase morphological diversity of a rare vanadium cubane (V4O16) based metal organic framework0 aSolid phase morphological diversity of a rare vanadium cubane V4 a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcJAN a12-170 v123 a

A Cu(II) connected V4O16-cubane based metal organic framework, Cu-2(phen)(2)(V4O8) (PO4)(4) [Cu2V4O16-2D] was synthesized under hydrothermal conditions. This is the first example of transition metal connected V4O16-cubane based MOF. X-ray single crystal data shows the alternate arrangement V4O16-cubane and Cu(phen)(O)(3) square pyramidal unit in two dimensions. These two-dimensional sheets are stacked on top of each other to form a three-dimensional architecture. Cu2V4O16-2D shows two types of solid state morphologies of the same phase, which was confirmed by scanning electron microscopy. It is noteworthy that this type of morphological difference of the solid phase in an extended metal organic hybrid material is rare and has not been perceived in the polyoxovanadate based MOFs literature. Cu2V4O16-2D was further characterized by powder X-ray diffraction (PXRD), thermal gravimetric analysis (TGA), IR-spectroscopy, scanning electron microscopy (SEM), and elemental analysis. We also studied the static magnetic and gas adsorption properties for Cu2V4O16-2D.

1 aDey, Chandan1 aDas, Raja1 aPoddar, Pankaj1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/solid-phase-morphological-diversity-rare-vanadium-cubane-v4o16-based-metal-organic-001973nas a2200169 4500008004100000022001400041245016200055210006900217260007100286300001400357490000700371520123800378100001701616700002701633700002001660856012301680 2012 eng d a1528-748300aSolid-state thermolysis of anion induced metal-organic frameworks to ZnO microparticles with predefined morphologies: facile synthesis and solar cell studies0 aSolidstate thermolysis of anion induced metalorganic frameworks  a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcMAY a2572-25780 v123 a

Simple one-step solid state thermolysis of two Zn-based homochiral metal organic frameworks (MOFs) leads to a dramatic difference in morphologies which depends on the anion (-Cl and -Br) and calcination environment (air and N-2). Rod-shaped (aspect ratio similar to 20), hexagonal column shaped (aspect ratio similar to 3), and elliptical aggregation of ZnO morphologies (aspect ratio similar to 3) are obtained and characterized. Although these two MOFs possess similar rod-shaped morphology, they produce dramatic change in resulting ZnO microparticle morphologies (from rod-shaped ZnO microparticles in the case of thermolysis of MOP 1 to hexagonal column shaped ZnO microparticles in the case of MOF 2 thermolysis) when calcined in N-2 at 800 degrees C. However, when we calcined both MOF 1 and 2 in air, we encountered similar elliptical aggregation of ZnO microparticles. These ZnO microparticles show permanent porosity, visible light emission centered at 605 or 510 nm. Moreover, they show 0.15% and 0.14% dye sensitized solar cell activity. To the best of our knowledge, this is the first report of dye sensitized solar cell activity of ZnO microparticles obtained from one-step thermolysis of porous homochiral MOFs.

1 aKundu, Tanay1 aSahoo, Subash, Chandra1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/solid-state-thermolysis-anion-induced-metal-organic-frameworks-zno-microparticles-001058nas a2200169 4500008004100000022001400041245013300055210006900188260011000257300001600367490000700383520031300390100002300703700001700726700002000743856012500763 2012 eng d a1359-734500aSolution mediated phase transformation (RHO to SOD) in porous Co-imidazolate based zeolitic frameworks with high water stability0 aSolution mediated phase transformation RHO to SOD in porous Coim aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcOCT a11868-118700 v483 a

Here we report a highly porous, water stable Co based ZIF [CoNIm (RHO)] and its solution mediated phase transformation to a less porous and water unstable ZIF [CoNIm (SOD)]. CoNIm (RHO) has high Langmuir surface area [2087 m(2) g(-1)] as well as high water adsorption [200 cm(3) (STP) g(-1)] capacity.

1 aBiswal, Bishnu, P.1 aPanda, Tamas1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/solution-mediated-phase-transformation-rho-sod-porous-co-imidazolate-based-zeolitic-000670nas a2200157 4500008004100000245009700041210006900138260000800207300001400215490000700229520008100236100001700317700002700334700002000361856013100381 2012 eng d00aVariable water adsorption in amino acid derivative based homochiral metal organic frameworks0 aVariable water adsorption in amino acid derivative based homochi cSEP a4633-46400 v123 a

{Six new Cd-containing homochiral metal organic framework materials [

1 aKundu, Tanay1 aSahoo, Subash, Chandra1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/variable-water-adsorption-amino-acid-derivative-based-homochiral-metal-organic-frameworks-002243nas a2200241 4500008004100000022001400041245012400055210006900179260007100248300001600319490000800335520133000343100001901673700002401692700002301716700001801739700002501757700002801782700002501810700001801835700002001853856012801873 2013 eng d a0002-786300aChemically stable multilayered covalent organic nanosheets from covalent organic frameworks via mechanical delamination0 aChemically stable multilayered covalent organic nanosheets from  a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcNOV a17853-178610 v1353 a

A series of five thermally and chemically stable functionalized covalent organic frameworks (COFs), namely, TpPa-NO2, TpPa-F-4, TpBD-(NO2)(2), TpBD-Me-2, and TpBD-(OMe)(2) were synthesized by employing the solvothermal aldehyde-amine Schiff base condensation reaction. In order to complete the series, previously reported TpPa-1, TpPa-2, and TpBD have also been synthesized, and altogether, eight COFs were fully characterized through powder X-ray diffraction (PXRD), Fourier transform IR (FT-IR) spectroscopy, C-13 solid-state NMR spectroscopy, and thermogravimetric analysis. These COFs are crystalline, permanently porous, and stable in boiling water, acid (9 N HCl), and base (3 N NaOH). The. synthesized COFs (all eight) were successfully delaminated using a simple, safe, and environmentally friendly mechanical grinding route to transform into covalent organic nanosheets (CONs) and were well characterized via transmission electron microscopy and atomic force microscopy. Further PXRD and FT-IR analyses confirm that these CONs retain their structural integrity throughout the delamination process and also remain stable in aqueous, acidic, and basic media like the parent COFs. These exfoliated CONs have graphene-like layered morphology (delaminated layers), unlike the COFs from which they were synthesized.

1 aChandra, Suman1 aKandambeth, Sharath1 aBiswal, Bishnu, P.1 aLukose, Binit1 aKunjir, Shrikant, M.1 aChaudhary, Minakshi, V.1 aBabaRao, Ravichandar1 aHeine, Thomas1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/chemically-stable-multilayered-covalent-organic-nanosheets-covalent-organic-frameworks-000983nas a2200157 4500008004100000022001400041245012200055210006900177260011000246300001400356490000700370520028700377100001700664700002000681856012400701 2013 eng d a1359-734500aControlled synthesis of a catalytically active hybrid metal-oxide incorporated zeolitic imidazolate framework (MOZIF)0 aControlled synthesis of a catalytically active hybrid metaloxide aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcJUN a6617-66190 v493 a

A rare hybrid Metal-Oxide incorporated Zeolitic Imidazolate Framework, MOZIF-1, containing tetrahedral Zn(II) and Mo(VI) centres has been synthesized. MOZIF-1 can degrade methyl orange and orange II dyes under visible light. Na-3[PMo12O40] is the source of Mo(VI) in MOZIF-1.

1 aDey, Chandan1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/controlled-synthesis-catalytically-active-hybrid-metal-oxide-incorporated-zeolitic-001032nas a2200193 4500008004100000022001400041245009800055210006900153260011000222300001400332490000700346520024600353100002100599700002100620700002000641700002000661700003100681856012600712 2013 eng d a1359-734500aElectron rich porous extended framework as a heterogeneous catalyst for Diels-Alder reactions0 aElectron rich porous extended framework as a heterogeneous catal aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcJUN a7439-74410 v493 a

An electron rich porous metal-organic framework (MOF) has been synthesized, which acts as an effective heterogeneous catalyst for Diels-Alder reactions through encapsulation of the reactants in confined nano-channels of the framework.

1 aGole, Bappaditya1 aBar, Arun, Kumar1 aMallick, Arijit1 aBanerjee, Rahul1 aMukherjee, Partha, Sarathi uhttps://library.ncl.res.in/content/electron-rich-porous-extended-framework-heterogeneous-catalyst-diels-alder-reactions-000987nas a2200253 4500008004100000022001400041245014100055210006900196260007700265300001600342490000700358653003200365653001900397653002500416653001800441653001600459100002400475700002900499700002100528700001800549700001800567700002000585856012800605 2013 eng d a1433-785100aEnhancement of chemical stability and crystallinity in porphyrin-containing covalent organic frameworks by intramolecular hydrogen bonds0 aEnhancement of chemical stability and crystallinity in porphyrin aBOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANYbWILEY-V C H VERLAG GMBHcDEC a13052-130560 v5210acovalent organic frameworks10ahydrogen bonds10amesoporous materials10aporphyrinoids10atautomerism1 aKandambeth, Sharath1 aShinde, Digambar, Balaji1 aPanda, Manas, K.1 aLukose, Binit1 aHeine, Thomas1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/enhancement-chemical-stability-and-crystallinity-porphyrin-containing-covalent-organic-000919nas a2200181 4500008004100000245015300041210006900194260000800263300001200271490000700283520022100290100002700511700001600538700002100554700002000575700002300595856011900618 2013 eng d00aFour 3D Cd(II)-based metal organic hybrids with different N,N `-donor spacers: syntheses, characterizations, and selective gas adsorption properties0 aFour 3D CdIIbased metal organic hybrids with different NN donor  cFEB a731-7390 v133 a

{Four new metal organic frameworks with bivalent cadmium, disodium succinate (Na(2)suc), and four different N,N'-donor ligands, i.e., {[Cd(L1)(suc)]center dot(H2O)(3)}(n) (1), {[Cd(L2)(suc)]center dot(H2O)(2)\

1 aBhattacharya, Biswajit1 aDey, Rajdip1 aPachfule, Pradip1 aBanerjee, Rahul1 aGhoshal, Debajyoti uhttps://library.ncl.res.in/content/four-3d-cdii-based-metal-organic-hybrids-different-nn-donor-spacers-syntheses-000846nas a2200229 4500008004100000022001400041245008700055210006900142260007700211300001600288490000700304653001900311653002400330653002300354653002900377653001800406100002000424700001800444700002200462700002000484856011200504 2013 eng d a1433-785100aHydrolytic conversion of a metal-organic polyhedron into a metal-organic framework0 aHydrolytic conversion of a metalorganic polyhedron into a metalo aBOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANYbWILEY-V C H VERLAG GMBHcDEC a13755-137590 v5210acage compounds10acrystal engineering10ahydrophobic effect10ametal-organic frameworks10aSelf-assembly1 aMallick, Arijit1 aGarai, Bikash1 aDiaz, David, Diaz1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/hydrolytic-conversion-metal-organic-polyhedron-metal-organic-framework-001748nas a2200181 4500008004100000022001400041245010300055210006900158260011000227300001400337490000600351520099900357100002001356700002301376700002001399700002201419856012501441 2013 eng d a2050-748800aIn situ growth of metal-organic frameworks on a porous ultrafiltration membrane for gas separation0 aIn situ growth of metalorganic frameworks on a porous ultrafiltr aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcMAY a8828-88350 v13 a

We demonstrate the synthesis of CuBTC and ZIF-8 on a polysulfone based porous asymmetric ultrafiltration (UF) membrane by in situ growth followed by the LBL deposition of crystals without any need for preseeding or surface modification of the membrane. In this way, the top surface of the UF membrane pores is completely covered by MOFs; while the remaining part of the membrane offers a flexible support to the MOFs. The pore apertures of the MOF nanoparticles located at the pore opening of the UF membrane act as channels for the entry of penetrants. The remaining porous sublayer of the membrane carries penetrants on the permeate side without significant resistance. These composite membranes were characterized by PXRD and SEM. The gas permeation study was performed using pure gases of industrial significance (H-2, C3H6 and CO2). The performance of CuBTC@PSF showed enhanced selectivity, of 7.2 and 5.7 for H-2/CO2 and H-2/C3H6 respectively, to that of the pristine PSF membrane.

1 aNagaraju, Divya1 aBhagat, Deepti, G.1 aBanerjee, Rahul1 aKharul, Ulhas, K. uhttps://library.ncl.res.in/content/situ-growth-metal-organic-frameworks-porous-ultrafiltration-membrane-gas-separation-001815nas a2200217 4500008004100000022001400041245013900055210006900194260007700263300001400340490000700354520095800361653002601319653001101345653001401356653003901370653002101409100001701430700002001447856013001467 2013 eng d a1439-423500aPOM-catalyzed in situ ligand synthesis for the construction of metal complexes and their use in the formation of coordination polymers0 aPOMcatalyzed in situ ligand synthesis for the construction of me aBOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANYbWILEY-V C H VERLAG GMBHcAPR a1009-10150 v143 a

Six organicinorganic hybrid materials were synthesized by the in situ oxidation of neocuproine by using MoO3/Na2MoO4 as the catalyst in the presence of Cu(NO3)2. The crystal structures of Mo8-Cu4-PHEN and Mo8-Cu2-5(2PIC) are composed of [Mo8O26]4 polyoxometalate (POM) units, whereas the crystal structure of Mo6-Cu-COPHEN is composed of a [Mo6O19]2 POM unit; both POM units could be considered as the active form of the catalyst. Reaction of the hybrid materials with 1,3,5-benzenetricarboxylic acid (BTC) resulted in the formation of two different coordination polymers (CPs) under different reaction conditions. These CPs, depending on their structural attributes, exhibit distinct differences in the adsorption of H2, CO2, and water. The use of 2-methylpyridine instead of neocuproine does not give any oxidation products under the same reaction conditions due to the incorrect positioning of the methyl group with respect to the CuII center.

10acoordination polymers10aCopper10aN ligands10aorganicinorganic hybrid composites10apolyoxometalates1 aDey, Chandan1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/pom-catalyzed-situ-ligand-synthesis-construction-metal-complexes-and-their-use-formation-001783nas a2200181 4500008004100000022001400041245011400055210006900169260007100238300001400309490000700323520104600330100003101376700002101407700002001428700002401448856012901472 2013 eng d a1528-748300aPorous carbons from nonporous MOFs: influence of ligand characteristics on intrinsic properties of end carbon0 aPorous carbons from nonporous MOFs influence of ligand character a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcOCT a4195-41990 v133 a

Synthesis of porous carbons on direct carbonization of nonporous Zn-based MOFs has been achieved without using any additional carbon precursor. The effect of ligand nature on the resulting carbon porosity has been studied systematically using the MOFs synthesized from rigid and flexible ligands. The linear relations between Zn/C ratio of the MOF versus surface area of the resulting carbon, micro-porosity versus H-2 uptake achieved in these carbons, and surface area versus specific capacitance of the end carbons have been verified from the gas adsorption, molecular composition, and electrochemical studies, respectively. Cyclic voltammetry and charge-discharge cycling have been carried out to study the capacitive behavior of the carbons. The interdependence of capacitive behavior on the surface area has been analyzed using data derived from N-2 adsorption isotherms and charge-discharge curves. Among the carbons synthesized, C-MOF-2 shows maximal surface area of 1378 m(2)/g with a specific capacitance of 170 F/g at 1 A/g.

1 aAiyappa, Harshitha, Barike1 aPachfule, Pradip1 aBanerjee, Rahul1 aKurungot, Sreekumar uhttps://library.ncl.res.in/content/porous-carbons-nonporous-mofs-influence-ligand-characteristics-intrinsic-properties-end-001702nas a2200253 4500008004100000022001400041245015800055210006900213260007700282300001200359490000700371520072600378653001501104653002101119653001501140653003001155653003001185100002101215700002401236700002401260700002401284700002001308856012001328 2013 eng d a0947-653900aPorous-organic-framework-templated nitrogen-rich porous carbon as a more proficient electrocatalyst than Pt/C for the electrochemical reduction of oxygen0 aPorousorganicframeworktemplated nitrogenrich porous carbon as a  aBOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANYbWILEY-V C H VERLAG GMBHcJAN a974-9800 v193 a

Porous nitrogen-rich carbon (POF-C-1000) that was synthesized by using a porous organic framework (POF) as a self-sacrificing host template in a nanocasting process possessed a high degree of graphitization in an ordered structural arrangement with large domains and well-ordered arrays of carbon sheets. POF-C-1000 exhibits favorable electrocatalytic activity for the oxygen-reduction reaction (ORR) with a clear positive shift of about 40 mV in the onset potential compared to that of a traditional, commercially available Pt/C catalyst. In addition, irrespective of its moderate surface area (785 m2?g-1), POF-C-1000 showed a reasonable H2 adsorption of 1.6 wt?% (77 K) and a CO2 uptake of 3.5 mmol?g-1 (273 K).

10aAdsorption10aElectrochemistry10afuel cells10aoxygen-reduction reaction10aporous organic frameworks1 aPachfule, Pradip1 aDhavale, Vishal, M.1 aKandambeth, Sharath1 aKurungot, Sreekumar1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/porous-organic-framework-templated-nitrogen-rich-porous-carbon-more-proficient-001490nas a2200253 4500008004100000022001400041245012300055210006900178260007700247300001400324490000700338520054500345653001100890653003300901653001600934653002400950653002900974100002001003700002201023700002201045700002201067700002001089856012701109 2013 eng d a0947-653900aProton-conducting supramolecular metallogels from the lowest molecular weight assembler ligand: a quote for simplicity0 aProtonconducting supramolecular metallogels from the lowest mole aBOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANYbWILEY-V C H VERLAG GMBHcJUL a9562-95680 v193 a

Oxalic acid has been proven to be the lowest molecular weight organic ligand able to form robust supramolecular metallogel networks in the presence of metal salts. In particular, two novel multifunctional metallogels were readily prepared at room temperature by simple mixing of stock solutions of Cu-II acetate monohydrate or Cu-II perchlorate hexahydrate and oxalic acid dihydrate. Formation of different polymorphs and unprecedented proton conduction under anhydrous conditions were also demonstrated with some of these materials.

10aCopper10alow-molecular-weight ligands10ametallogels10aproton conductivity10asupramolecular chemistry1 aSaha, Subhadeep1 aSchoen, Eva-Maria1 aCativiela, Carlos1 aDiaz, David, Diaz1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/proton-conducting-supramolecular-metallogels-lowest-molecular-weight-assembler-ligand-001794nas a2200169 4500008004100000022001400041245012200055210006900177260011000246300001400356490000700370520105600377100001701433700002701450700002001477856012701497 2013 eng d a1466-803300aRelating pore hydrophilicity with vapour adsorption capacity in a series of amino acid based metal organic frameworks0 aRelating pore hydrophilicity with vapour adsorption capacity in  aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcAUG a9634-96400 v153 a

A new Zn based porous homochiral metal-organic framework, ThrZnOAc, belonging to unh topology, has been synthesized using pyridyl functionalized threonine and Zn(OAc)(2) as the metal precursor. Stepwise substitution of the homochiral MOF backbone by simply changing the sidearm of the amino acids (isopropyl in the case of valine, methyl in alanine and hydroxyethyl in threonine) resulted in increased water adsorption in ThrZnOAc compared to the previously reported ValZnOAc/AlaZnOAc. Extensive solvent sorption isotherms (water, methanol, isopropanol and toluene) have been carried out, which revealed high solvophilic interaction with polar solvents in ThrZnOAc due to the polar pore [2-hydroxyethyl {-CH(OH)CH3} sidearm of the amino acid], which is not prominent in the corresponding valine/alanine counterparts. The aforementioned functionalization in a series of isostructural amino acid based MOFs with the only difference being in the sidearm and their emergence as enhanced solvophilic materials is unprecedented in the MOF literature.

1 aKundu, Tanay1 aSahoo, Subash, Chandra1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/relating-pore-hydrophilicity-vapour-adsorption-capacity-series-amino-acid-based-metal-000844nas a2200181 4500008004100000022001400041245011800055210006900173260011000242300001400352490000700366520007500373100001700448700002700465700002000492700002000512856013000532 2013 eng d a1359-734500aSalt metathesis in three dimensional metal-organic frameworks (MOFs) with unprecedented hydrolytic regenerability0 aSalt metathesis in three dimensional metalorganic frameworks MOF aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcAPR a5262-52640 v493 a

{Eight Zn-based porous (1.2 nm) homochiral MOFs (ValZnX, AlaZnX

1 aKundu, Tanay1 aSahoo, Subash, Chandra1 aSaha, Subhadeep1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/salt-metathesis-three-dimensional-metal-organic-frameworks-mofs-unprecedented-hydrolytic-001497nas a2200181 4500008004100000022001400041245014700055210006900202260011000271300001600381490000600397520069100403100002301094700002401117700003001141700002001171856012401191 2013 eng d a2040-336400aStabilization of graphene quantum dots (GQDs) by encapsulation inside zeolitic imidazolate framework nanocrystals for photoluminescence tuning0 aStabilization of graphene quantum dots GQDs by encapsulation ins aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcSEP a10556-105610 v53 a

Luminescent graphene quantum dots (GQDs) are encapsulated and stabilized in Zeolitic Imidazolate Framework (ZIF-8) nanocrystals. The GQDs are well confined due to the adsorption on the growing face of the ZIF-8 nanocrystals and have a profound effect on the shape of the nanocrystals from rhombic dodecahedron to spherical. Stabilizing GQDs inside the ZIF-8 nanocrystals results in tailoring of the photoluminescence emission (ca. 32 nm, bathochromic shift) of the GQD@ZIF-8 nanocrystal composite even after 3 months of aging under normal laboratory conditions. Also the water adsorption (at STP) capacity increased for the GQD@ ZIF-8 composite as compared to the pristine ZIF-8.

1 aBiswal, Bishnu, P.1 aShinde, Dhanraj, B.1 aPillai, Vijayamohanan, K.1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/stabilization-graphene-quantum-dots-gqds-encapsulation-inside-zeolitic-imidazolate-000579nas a2200157 4500008004100000022001400041245004700055210004700102260011000149300001400259490000700273100001300280700002000293700002700313856008100340 2013 eng d a1466-803300aStructural design of coordination polymers0 aStructural design of coordination polymers aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcOCT a9237-92380 v151 aDu, Miao1 aBanerjee, Rahul1 aShimizu, George, K. H. uhttps://library.ncl.res.in/content/structural-design-coordination-polymers-001061nas a2200169 4500008004100000022001400041245011400055210006900169260011000238300001400348490000700362520033600369100001700705700001700722700002000739856013200759 2013 eng d a1359-734500aStructural isomerism leading to variable proton conductivity in indium(III) isophthalic acid based frameworks0 aStructural isomerism leading to variable proton conductivity in  aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcMAY a6197-61990 v493 a

Proton conductivity has been studied thoroughly in two isomeric In(III)-isophthalate based MOFs. In-IA-2D-1 is capable of showing proton conductivity (3.4 x 10(-3) S cm(-1)) under humidified conditions (98% RH), whereas In-IA-2D-2 can conduct protons (2.6 x 10(-5) S cm(-1)) under humidified as well as anhydrous conditions.

1 aPanda, Tamas1 aKundu, Tanay1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/structural-isomerism-leading-variable-proton-conductivity-indiumiii-isophthalic-acid-based-001036nas a2200181 4500008004100000022001400041245013800055210006900193260007100262300001400333490000700347520027800354100002900632700002700661700002000688700002000708856012600728 2013 eng d a0020-166900aSynthesis, structure, and H-2/CO2 adsorption in a three-dimensional 4-connected triorganotin coordination polymer with a sqc topology0 aSynthesis structure and H2CO2 adsorption in a threedimensional 4 a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcAPR a3579-35810 v523 a

A 4-connected triorganotin 3D coordination polymer in a sqc topology has been shown to possess 1D microchannels along its crystallographic a axis. This main-group-element-containing framework structure shows selective gas adsorption, preferring CO2 and H-2 over N-2.

1 aChandrasekhar, Vadapalli1 aMohapatra, Chandrajeet1 aBanerjee, Rahul1 aMallick, Arijit uhttps://library.ncl.res.in/content/synthesis-structure-and-h-2co2-adsorption-three-dimensional-4-connected-triorganotin-002881nas a2200241 4500008004100000022001400041245014000055210006900195260007700264300001400341490000700355520195300362653001102315653002102326653002902347653001902376653003002395100002902425700002302454700002002477700002402497856011802521 2013 eng d a0947-653900aZeolitic imidazolate framework (ZIF)-derived, hollow-core, nitrogen-doped carbon nanostructures for oxygen-reduction reactions in PEFCs0 aZeolitic imidazolate framework ZIFderived hollowcore nitrogendop aBOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANYbWILEY-V C H VERLAG GMBHcJUL a9335-93420 v193 a

The facile synthesis of a porous carbon material that is doped with iron-coordinated nitrogen active sites (FeNC-70) is demonstrated by following an inexpensive synthetic pathway with a zeolitic imidazolate framework (ZIF-70) as a template. To emphasize the possibility of tuning the porosity and surface area of the resulting carbon materials based on the structure of the parent ZIF, two other ZIFs, that is, ZIF-68 and ZIF-69, are also synthesized. The resulting active carbon material that is derived from ZIF-70, that is, FeNC-70, exhibits the highest BET surface area of 262m2g-1 compared to the active carbon materials that are derived from ZIF-68 and ZIF-69. The HR-TEM images of FeNC-70 show that the carbon particles have a bimodal structure that is composed of a spherical macroscopic pore (about 200nm) and a mesoporous shell. X-ray photoelectron spectroscopy (XPS) reveals the presence of Fe-N-C moieties, which are the primary active sites for the oxygen-reduction reaction (ORR). Quantitative estimation by using EDAX analysis reveals a nitrogen content of 14.5wt.%, along with trace amounts of iron (0.1wt.%), in the active FeNC-70 catalyst. This active porous carbon material, which is enriched with Fe-N-C moieties, reduces the oxygen molecule with an onset potential at 0.80V versus NHE through a pathway that involves 3.3-3.8e- under acidic conditions, which is much closer to the favored 4e- pathway for the ORR. The onset potential of FeNC-70 is significantly higher than those of its counterparts (FeNC-68 and FeNC-69) and of other reported systems. The FeNC-based systems also exhibit much-higher tolerance towards MeOH oxidation and electrochemical stability during an accelerated durability test (ADT). Electrochemical analysis and structural characterizations predict that the active sites for the ORR are most likely to be the insitu generated NFeN2+2/C moieties, which are distributed along the carbon framework.

10aDoping10aElectrochemistry10ametal-organic frameworks10aNanostructures10aoxygen-reduction reaction1 aPalaniselvam, Thangavelu1 aBiswal, Bishnu, P.1 aBanerjee, Rahul1 aKurungot, Sreekumar uhttps://library.ncl.res.in/content/zeolitic-imidazolate-framework-zif-derived-hollow-core-nitrogen-doped-carbon-000570nas a2200133 4500008004100000022001400041245006600055210006500121260011000186300001400296490000700310100002000317856009900337 2014 eng d a1466-803300a2014 International year of crystallography celebration: India0 a2014 International year of crystallography celebration India aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcMAY a4665-46660 v161 aBanerjee, Rahul uhttps://library.ncl.res.in/content/2014-international-year-crystallography-celebration-india-001084nas a2200193 4500008004100000022001400041245012600055210006900181260011000250300001400360490000700374520028500381100002000666700001800686700001700704700002200721700002000743856012700763 2014 eng d a1359-734500aAmino acid-based multiresponsive low-molecular weight metallohydrogels with load-bearing and rapid self-healing abilities0 aAmino acidbased multiresponsive lowmolecular weight metallohydro aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcFEB a3004-30060 v503 a

A multiresponsive metallohydrogel based on an amino acid-derived low molecular weight (LMW) ligand and a Zn(II) salt was prepared. This hydrogel showed remarkable shape-persistent, self-standing, load-bearing and self-healing properties, which is uncommon in LMW hydrogels.

1 aSaha, Subhadeep1 aBachl, Jurgen1 aKundu, Tanay1 aDiaz, David, Diaz1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/amino-acid-based-multiresponsive-low-molecular-weight-metallohydrogels-load-bearing-and00635nas a2200181 4500008004100000022001400041245007600055210006900131260000800200300000900208490000700217653003100224653002000255653002700275100002200302700002000324856010900344 2014 eng d a2053-273300aChemically delaminated free standing covalent organic nanosheets (CONs)0 aChemically delaminated free standing covalent organic nanosheets cMAY aC4570 v7010aCovalent organic framework10aporous polymers10aultra thin nano sheets1 aKhayum, Abdul, M.1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/chemically-delaminated-free-standing-covalent-organic-nanosheets-cons00641nas a2200181 4500008004100000022001400041245008000055210006900135260000800204300001000212490000700222653002300229653003100252653002800283100001700311700002000328856011100348 2014 eng d a2053-273300aChemically stable urea based COF for size selective heterogeneous catalysis0 aChemically stable urea based COF for size selective heterogeneou cFEB aC11460 v7010achemical stability10aCovalent organic framework10aheterogeneous catalysis1 aBasu, Arghya1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/chemically-stable-urea-based-cof-size-selective-heterogeneous-catalysis00619nas a2200181 4500008004100000022001400041245009000055210006900145260000800214300000900222490000700231653000900238653001600247653001600263100001900279700002000298856011900318 2014 eng d a2053-273300aConstruction of highly crystalline ultraporous covalent organic frameworks in seconds0 aConstruction of highly crystalline ultraporous covalent organic  cAPR aC4560 v7010aCOFs10aCrystalline10aUltraporous1 aKarak, Suvendu1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/construction-highly-crystalline-ultraporous-covalent-organic-frameworks-seconds00590nas a2200181 4500008004100000022001400041245006700055210006600122260000800188300000900196490000700205653003100212653001500243653001500258100001700273700002000290856009800310 2014 eng d a2053-273300aCovalent organic framework thin-films for molecular separation0 aCovalent organic framework thinfilms for molecular separation cMAY aC5470 v7010aCovalent organic framework10aSeparation10aThin-films1 aDey, Kaushik1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/covalent-organic-framework-thin-films-molecular-separation01926nas a2200265 4500008004100000022001400041245012800055210006900183260007700252300001600329490000700345520092500352653002001277653003201297653002101329653002401350653001901374100001901393700003101412700002201443700002201465700002401487700002001511856012901531 2014 eng d a0947-653900aCovalent organic framework-cadmium sulfide hybrid as a prototype photocatalyst for visible-light-driven hydrogen production0 aCovalent organic frameworkcadmium sulfide hybrid as a prototype  aBOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANYbWILEY-V C H VERLAG GMBHcNOV a15961-159650 v203 a

CdS nanoparticles were deposited on a highly stable, two-dimensional (2D) covalent organic framework (COF) matrix and the hybrid was tested for photocatalytic hydrogen production. The efficiency of CdS-COF hybrid was investigated by varying the COF content. On the introduction of just 1 wt% of COF, a dramatic tenfold increase in the overall photocatalytic activity of the hybrid was observed. Among the various hybrids synthesized, that with 10 wt% COF, named CdS-COF (90: 10), was found to exhibit a steep H2 production amounting to 3678 mmolh(-1) g(-1), which is significantly higher than that of bulk CdS particles (124 mmolh(-1)g(-1)). The presence of a p-conjugated backbone, high surface area, and occurrence of abundant 2D hetero-interface highlight the usage of COF as an effective support for stabilizing the generated photoelectrons, thereby resulting in an efficient and high photocatalytic activity.

10acharge transfer10acovalent organic frameworks10ahybrid materials10ahydrogen production10aPhotocatalysis1 aThote, Jayshri1 aAiyappa, Harshitha, Barike1 aDeshpande, Aparna1 aDiaz, David, Diaz1 aKurungot, Sreekumar1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/covalent-organic-framework-cadmium-sulfide-hybrid-prototype-photocatalyst-visible-light-001314nas a2200193 4500008004100000022001400041245008300055210006900138260006700207300000900274490000700283520061700290100001700907700001700924700002300941700002000964700002000984856011601004 2014 eng d a0108-768100aCrystalline metal-organic frameworks (MOFs): synthesis, structure and function0 aCrystalline metalorganic frameworks MOFs synthesis structure and a111 RIVER ST, HOBOKEN 07030-5774, NJ USAbWILEY-BLACKWELLcFEB a3-100 v703 a

Metal-organic frameworks (MOFs) are a class of hybrid network supramolecular solid materials comprised of organized organic linkers and metal cations. They can display enormously high surface areas with tunable pore size and functionality, and can be used as hosts for a range of guest molecules. Since their discovery, MOFs have experienced widespread exploration for their applications in gas storage, drug delivery and sensing. This article covers general and modern synthetic strategies to prepare MOFs, and discusses their structural diversity and properties with respect to application perspectives.

1 aDey, Chandan1 aKundu, Tanay1 aBiswal, Bishnu, P.1 aMallick, Arijit1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/crystalline-metal-organic-frameworks-mofs-synthesis-structure-and-function-000528nas a2200169 4500008004100000022001400041245005200055210005200107260000800159300000900167490000700176653003100183653001900214100002200233700002000255856008300275 2014 eng d a2053-273300aCrystalline porous materials for gas adsorption0 aCrystalline porous materials for gas adsorption cMAY aC4630 v7010aCovalent organic framework10agas adsorption1 aPal, Tapan, Kumar1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/crystalline-porous-materials-gas-adsorption00654nas a2200181 4500008004100000022001400041245008800055210006900143260000800212300000900220490000700229653003100236653003600267653001500303100001800318700002000336856011600356 2014 eng d a2053-273300aDecoding the morphological diversity in two dimensional crystalline porous polymers0 aDecoding the morphological diversity in two dimensional crystall cMAY aC5520 v7010aCovalent organic framework10aDensity functional calculations10aMorphology1 aHalder, Arjun1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/decoding-morphological-diversity-two-dimensional-crystalline-porous-polymers01213nas a2200193 4500008004100000022001400041245011700055210006900172260011000241300001400351490000700365520041900372100002000791700001800811700001700829700002200846700002000868856013100888 2014 eng d a1359-734500aDissolvable metallohydrogels for controlled release: evidence of a kinetic supramolecular gel phase intermediate0 aDissolvable metallohydrogels for controlled release evidence of  aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcMAY a7032-70350 v503 a

Two metallohydrogels based on an amino acid-based ligand and Zn(II) salts were synthesized. These hydrogels show an uncommon, reversible, time-dependent transformation from the opaque to transparent state. These hydrogels also exhibit gradual dissolution in water (pH <= 7) over time. A water-soluble stimulant, caffeine, could be in situ loaded into the hydrogels and slowly released during dissolution.

1 aSaha, Subhadeep1 aBachl, Jurgen1 aKundu, Tanay1 aDiaz, David, Diaz1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/dissolvable-metallohydrogels-controlled-release-evidence-kinetic-supramolecular-gel-phase-001073nas a2200205 4500008004100000022001400041245010000055210006900155260007100224300001400295490000700309520029000316100003100606700002000637700001800657700001900675700002400694700002000718856012900738 2014 eng d a1528-748300aDistinctive PdCl2-mediated transformation of Fe-based metallogels into metal-organic frameworks0 aDistinctive PdCl2mediated transformation of Febased metallogels  a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcJUL a3434-34370 v143 a

Simple, efficient conversion of viable Fe3+-based metallogels into Fe-metal-organic frameworks (MOFs) has been achieved by PdCl2-mediated gel degradation. The metallogels and the resulting MOFs have been characterized, and a probable mechanism for the event has been elucidated.

1 aAiyappa, Harshitha, Barike1 aSaha, Subhadeep1 aGarai, Bikash1 aThote, Jayshri1 aKurungot, Sreekumar1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/distinctive-pdcl2-mediated-transformation-fe-based-metallogels-metal-organic-frameworks-001079nas a2200181 4500008004100000022001400041245011000055210006900165260011000234300001400344490000700358520032800365100001700693700002300710700001900733700002000752856012500772 2014 eng d a1466-803300aEnhancement of CO2 uptake in iso-reticular Co based zeolitic imidazolate frameworks via metal replacement0 aEnhancement of CO2 uptake in isoreticular Co based zeolitic imid aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcJUN a4677-46800 v163 a

Three Co based Zeolitic Imidazolate Frameworks (Co-ZIF-68, -69 and -81) which adopt a GME topology with high porosity have been synthesized. These Co-ZIFs show high CO2 (273 K/298 K) uptake compared to their isostructural Zn based analogues, which has been proved experimentally as well as by ab initio calculations.

1 aPanda, Tamas1 aGupta, Krishna, M.1 aJiang, Jianwen1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/enhancement-co2-uptake-iso-reticular-co-based-zeolitic-imidazolate-frameworks-metal-001787nas a2200241 4500008004100000022001400041245013600055210006900191260007700260300001600337490000700353520085500360653002401215653001901239653002901258653002101287653002801308100001801336700002101354700002001375700001901395856013101414 2014 eng d a0947-653900aEvolution of an adenine-copper cluster to a highly porous cuboidal framework: solution-phase ripening and gas-adsorption properties0 aEvolution of an adeninecopper cluster to a highly porous cuboida aBOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANYbWILEY-V C H VERLAG GMBHcSEP a12262-122680 v203 a

The synthesis and directed evolution of a tetranu-clear copper cluster, supported by 8-mercapto-N9-propyladenine ligand, to a highly porous three-dimensional cubic framework in the solid state is reported. The structure of this porous framework was unambiguously characterized by Xray crystallography. The framework contains about 62% solvent-accessible void; the presence of a free exocyclic amino group in the porous framework facilitates reversible adsorption of gas and solvent molecules. Oriented growth of framework in solution was also tracked by force and scanning electron microscopy studies, leading to identification of an intriguing ripening process, over a period of 30 days, which also revealed formation of cuboidal aggregates in solution. The elemental composition of these cuboidal aggregates was ascertained by EDAX analysis.

10acuboidal frameworks10agas adsorption10ametal-organic frameworks10aOstwald ripening10asolution-phase ripening1 aVenkatesh, V.1 aPachfule, Pradip1 aBanerjee, Rahul1 aVerma, Sandeep uhttps://library.ncl.res.in/content/evolution-adenine-copper-cluster-highly-porous-cuboidal-framework-solution-phase-ripening-001346nas a2200181 4500008004100000245015300041210006900194260000800263300001400271490000700285520063500292100001600927700002700943700002100970700002000991700002301011856013001034 2014 eng d00aFlexible dicarboxylate based pillar-layer metal organic frameworks: differences in structure and porosity by tuning the pyridyl based N, N ` linkers0 aFlexible dicarboxylate based pillarlayer metal organic framework cDEC a2305-23160 v163 a

{Dicarboxylate supported metal organic hybrids of Co(II), Zn(II) and Cd(II) have been synthesized using two different pyridyl based N, N' linkers having Schiff base functionalized site. The use of flexible dicarboxylate glutarate in designing such frameworks has created a marked diversity in topology. The different N, N' donor linkers also played an active part in the channel modification in the synthesized MOFs. The structural and topological diversity has been analyzed from the single crystal X-ray structure. Five compounds, {[Co(azpy)(glut)]center dot(CH3OH)}(n) (1), {[Co(meazpy)(glut)(H2O)(2)]center dot (H2O)(3)

1 aDey, Rajdip1 aBhattacharya, Biswajit1 aPachfule, Pradip1 aBanerjee, Rahul1 aGhoshal, Debajyoti uhttps://library.ncl.res.in/content/flexible-dicarboxylate-based-pillar-layer-metal-organic-frameworks-differences-structure-001535nas a2200205 4500008004100000022001400041245009900055210006900154260007500223300001200298490000700310520074200317653002801059653002701087653002801114653001901142100001701161700002001178856013101198 2014 eng d a0369-820300aHigh charge carrier mobility in two dimensional indium (iii) isophthalic acid based frameworks0 aHigh charge carrier mobility in two dimensional indium iii isoph a5 LAJPATRAI RD, ALLAHABAD 211002, INDIAbNATL ACAD SCIENCES INDIAcJUN a331-3360 v843 a

The effect of dimensionality (1D to 2D) on charge carrier mobility have been studied thoroughly on three In(III)-isophthalate based MOFs [In-IA-1D, In-IA-2D-1 and -2]. In-IA-1D possess 1D nanotubular architecture with [(CH3)(2)NH2](+). In-IA-2D-1 have 2D layers containing only [(CH3)(2)NH2](+) cations. Whereas, In-IA-2D-2 have [(CH3)(2)NH2](+) cations as well as solvent DMF molecule inside the crystal structure. Due to presence of the pi-pi stacking arrangement among the phenyl rings of IA moieties facilitates the high charge carrier mobility (4.6 x 10(-3) cm(2) V-1 s(-1) at V-G = -40 V) in In-IA-2D-2. However, In-IA-1D and In-IA-2D-1 does not show any charge carrier mobility due to absence of pi-pi stacking arrangement.

10aCharge carrier mobility10aCoordination chemistry10ametal organic framework10api-pi stacking1 aPanda, Tamas1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/high-charge-carrier-mobility-two-dimensional-indium-iii-isophthalic-acid-based-frameworks-000786nas a2200181 4500008004100000022001400041245011800055210006900173260011000242300001400352490000700366520001900373100002100392700002400413700002200437700002000459856012500479 2014 eng d a1359-734500aHighly stable covalent organic framework-Au nanoparticles hybrids for enhanced activity for nitrophenol reduction0 aHighly stable covalent organic frameworkAu nanoparticles hybrids aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcJAN a3169-31720 v503 a

{Gold [

1 aPachfule, Pradip1 aKandambeth, Sharath1 aDiaz, David, Diaz1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/highly-stable-covalent-organic-framework-au-nanoparticles-hybrids-enhanced-activity-001181nas a2200193 4500008004100000022001400041245012300055210006900178260007100247300001200318490000700330520043100337100001900768700001400787700001700801700002000818700001800838856013100856 2014 eng d a1528-748300aLigand-free one-step synthesis of {001} faceted semiconducting BiOCl single crystals and their photocatalytic activity0 aLigandfree onestep synthesis of 001 faceted semiconducting BiOCl a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcJAN a236-2390 v143 a

Herein, we report one-step ligand-free hydrothermal synthesis of predominantly {001}-faceted micron-sized single crystals of bismuth oxychloride (BiOCl). The structural chlorine is obtained by in situ generation of chloride ions. From Raman spectra, we could resolve the E-g transition. Photocatalytic activity of as-synthesized crystals showed 78% degradation of RhB dye under a xenon source after 120 min of exposure.

1 aBiswas, Anupam1 aDas, Raja1 aDey, Chandan1 aBanerjee, Rahul1 aPoddar, Panka uhttps://library.ncl.res.in/content/ligand-free-one-step-synthesis-001-faceted-semiconducting-biocl-single-crystals-and-their-001862nas a2200265 4500008004100000022001400041245010600055210006900161260007700230300001600307490000700323520092000330653001701250653001601267653001801283653002901301653001701330100001701347700001901364700001801383700002101401700002201422700002001444856013201464 2014 eng d a0947-653900aMechanical downsizing of a gadolinium(iii)-based metal-organic framework for anticancer drug delivery0 aMechanical downsizing of a gadoliniumiiibased metalorganic frame aBOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANYbWILEY-V C H VERLAG GMBHcAUG a10514-105180 v203 a

A Gd-III-based porous metal-organic framework (MOF), Gd-pDBI, has been synthesized using fluorescent linker pDBI (pDBI=(1,4-bis(5-carboxy-1H-benzimidazole-2-yl)benzene)), resulting in a three-dimensional interpenetrated structure with a one-dimensional open channel (1.9x1.2nm) filled with hydrogen-bonded water assemblies. Gd-pDBI exhibits high thermal stability, porosity, excellent water stability, along with organic-solvent and mild acid and base stability with retention of crystallinity. Gd-pDBI was transformed to the nanoscale regime (ca. 140nm) by mechanical grinding to yield MG-Gd-pDBI with excellent water dispersibility (>90min), maintaining its porosity and crystallinity. In vitro and in vivo studies on MG-Gd-pDBI revealed its low blood toxicity and highest drug loading (12wt%) of anticancer drug doxorubicin in MOFs reported to date with pH-responsive cancer-cell-specific drug release.

10aball-milling10adoxorubicin10adrug delivery10ametal-organic frameworks10ananocarriers1 aKundu, Tanay1 aMitra, Shouvik1 aPatra, Prasun1 aGoswami, Arunava1 aDiaz, David, Diaz1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/mechanical-downsizing-gadoliniumiii-based-metal-organic-framework-anticancer-drug-delivery-001106nas a2200157 4500008004100000022001400041245007800055210006900133260007100202300001400273490000700287520050400294100001800798700002000816856011200836 2014 eng d a1528-748300aMechanochemical synthesis of amide functionalized porous organic polymers0 aMechanochemical synthesis of amide functionalized porous organic a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcJUN a2729-27320 v143 a

Two porous organic polymers decorated with the amide functionality were synthesized mechanochemically and their properties were compared with the ones prepared by conventional solution mediated method. All the POPs were subjected to gas and water vapor sorption studies. The mechanochemically synthesized POPs have less surface area and show moderate adsorption properties compared to the solution mediated POPs. The amide based POPs show remarkable stability in water and concentrated acids.

1 aRajput, Lalit1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/mechanochemical-synthesis-amide-functionalized-porous-organic-polymers-001094nas a2200193 4500008004100000022001400041245014100055210006900196260011000265300001600375490000700391520025800398100001700656700002900673700002400702700002300726700002000749856013100769 2014 eng d a1359-734500aMechanosynthesis of imine, beta-ketoenamine, and hydrogen-bonded imine-linked covalent organic frameworks using liquid-assisted grinding0 aMechanosynthesis of imine betaketoenamine and hydrogenbonded imi aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcJUL a12615-126180 v503 a

A variety of aromatic amines/hydrazides and aldehydes have been utilized for the construction of crystalline COFs at a faster rate and in high yield, irrespective of their reactivity and solubility using the Liquid-Assisted Grinding (LAG) method.

1 aDas, Gobinda1 aShinde, Digambar, Balaji1 aKandambeth, Sharath1 aBiswal, Bishnu, P.1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/mechanosynthesis-imine-beta-ketoenamine-and-hydrogen-bonded-imine-linked-covalent-organic-002052nas a2200205 4500008004100000022001400041245007900055210006900134260011000203300001400313490000600327520126500333100002101598700002101619700002401640700002401664700002201688700002001710856011601730 2014 eng d a2050-748800aMultifunctional and robust covalent organic framework-nanoparticle hybrids0 aMultifunctional and robust covalent organic frameworknanoparticl aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcMAR a7944-79520 v23 a

Highly dispersed Pd(0) nanoparticles were successfully immobilized into a stable, crystalline and porous covalent organic framework (COF), TpPa-1, by a solution infiltration method using NABH(4) as a reducing agent. High resolution and dark field TEM images confirmed the uniform loading of the Pd(0) nanoparticles into the TpPa-1 matrix without aggregation. This hybrid material exhibited excellent catalytic activity towards the Cu free Sonogashira, Heck and sequential one pot Heck-Sonogashira cross-coupling reactions under basic conditions, and with superior performance compared to commercially available Pd supported on activated charcoal (i.e., 1, 5 and 10 wt%). Additionally, the precursor Pd(II)-doped COF also displayed competitive catalytic activity for the intramolecular oxidative biaryl synthesis under acidic conditions. Both catalysts were found to be highly stable under the reaction conditions showing negligible metal leaching, non-sintering behavior, and good recyclability. To the best of our knowledge, the organic support used in this work, TpPa-1, constitutes the first COF matrix that can hold both Pd(0) nanoparticles and Pd(II) complex without aggregation for catalytic purposes under both highly acidic and basic conditions.

1 aPachfule, Pradip1 aPanda, Manas, K.1 aKandambeth, Sharath1 aShivaprasad, S., M.1 aDiaz, David, Diaz1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/multifunctional-and-robust-covalent-organic-framework-nanoparticle-hybrids-001510nas a2200217 4500008004100000022001400041245009400055210006900149260007100218300001400289490000800303520070500311100001901016700001701035700002401052700002501076700002401101700002501125700002001150856012201170 2014 eng d a0002-786300aPhosphoric acid loaded azo (-N=N-) based covalent organic framework for proton conduction0 aPhosphoric acid loaded azo NN based covalent organic framework f a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcMAY a6570-65730 v1363 a

Two new chemically stable functional crystalline covalent organic frameworkds (COFs) (Tp-Azo and Tp-Stb) were synthesized using the Schiff base reaction between triformylphloroglucinol (Tp) and 4,4'-azodianiline (Azo) or 4,4'-diaminostilbene (Stb), respectively. Both COFs show the expected keto-enamine form, and high stability toward boiling water, strong acidic, and basic media. H3PO4 doping in Tp-Azo leads to immobilization of the acid within the porous framework, which facilitates proton conduction in both the hydrous (sigma = 9.9 X 10(-4) S cm(-1)) and anhydrous state (sigma = 6.7 X 10(-5) S cm-1). This report constitutes the first emergence of COFs as proton conducting materials.

1 aChandra, Suman1 aKundu, Tanay1 aKandambeth, Sharath1 aBabaRao, Ravichandar1 aMarathe, Yogesh, N.1 aKunjir, Shrikant, M.1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/phosphoric-acid-loaded-azo-nn-based-covalent-organic-framework-proton-conduction-001789nas a2200181 4500008004100000022001400041245010200055210006900157260007100226300001600297490000800313520109200321100002001413700001701433700001901450700002001469856011801489 2014 eng d a0002-786300aPhotocatalytic metal-organic framework from cds quantum dot incubated luminescent metallohydrogel0 aPhotocatalytic metalorganic framework from cds quantum dot incub a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcOCT a14845-148510 v1363 a

Cadmium sulfide (CdS) quantum dots (<10 nm in size) have been successfully synthesized in situ without any capping agent in a Zn(II)-based low-molecular-weight metallohydrogel (ZAVA). Pristine ZAVA hydrogel shows blue luminescence, but the emission can be tuned upon encapsulation of the CdS quantum dots. Time-dependent tunable emission (white to yellow to orange) of the CdS incubated gel (CdS@ZAVA gel) can be attributed to sluggish growth of the quantum dots inside the gel matrix. Once CdS quantum dots are entrapped, their augmentation can be stopped by converting the gel into xerogel, wherein the quantum dots remains embedded in the solid xerogel matrix. Similar size stabilization of CdS quantum dots can be achieved by means of a unique room-temperature conversion of the CdS incubated ZAVA gel to CdS incubated MOF (CdS@ZAVCl) crystals. This in turn arrests the tunability in emission owing to the restriction in the growth of CdS quantum dots inside xerogel and MOF. These CdS embedded MOFs have been utilized as a catalyst for water splitting under visible light.

1 aSaha, Subhadeep1 aDas, Gobinda1 aThote, Jayshri1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/photocatalytic-metal-organic-framework-cds-quantum-dot-incubated-luminescent-000624nas a2200181 4500008004100000022001400041245007600055210006900131260000800200300000900208490000700217653002200224653002100246653002800267100001800295700002000313856010900333 2014 eng d a2053-273300aPhotochromic metal organic frameworks for inkless and erasable printing0 aPhotochromic metal organic frameworks for inkless and erasable p cMAY aC1100 v7010aErasable Printing10aInkless Printing10ametal organic framework1 aGarai, Bikash1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/photochromic-metal-organic-frameworks-inkless-and-erasable-printing-201085nas a2200181 4500008004100000022001400041245012000055210006900175260011000244300001400354490000700368520030800375100002100683700003100704700002000735700002400755856012400779 2014 eng d a1359-734500aPost modification of MOF derived carbon via g-C3N4 entrapment for an efficient metal-free oxygen reduction reaction0 aPost modification of MOF derived carbon via gC3N4 entrapment for aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcFEB a3363-33660 v503 a

High surface area carbon with a nitrogen content of 7.0% is derived from MOF via in situ g-C3N4 formation. The material shows excellent ORR activity with an onset potential of 0.035 V (vs. Hg/HgO) in alkaline medium apart from high durability and strong disinclination towards methanol crossover.

1 aPandiaraj, Sekar1 aAiyappa, Harshitha, Barike1 aBanerjee, Rahul1 aKurungot, Sreekumar uhttps://library.ncl.res.in/content/post-modification-mof-derived-carbon-g-c3n4-entrapment-efficient-metal-free-oxygen-000602nas a2200181 4500008004100000022001400041245008100055210006900136260000800205300001000213490000700223653000800230653001400238653002200252100001900274700002000293856010700313 2014 eng d a2053-273300aRole of hydrogen bonding in pseudocapacitance of covalent organic frameworks0 aRole of hydrogen bonding in pseudocapacitance of covalent organi cMAR aC11490 v7010aCOF10aH-bonding10apseudocapacitance1 aChandra, Suman1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/role-hydrogen-bonding-pseudocapacitance-covalent-organic-frameworks01643nas a2200205 4500008004100000022001400041245007900055210006900134260010200203300001400305490000800319520087200327653001501199653002401214653002101238653002801259100001701287700002001304856011301324 2014 eng d a0974-362600aStructural diversity in serine derived homochiral metal organic frameworks0 aStructural diversity in serine derived homochiral metal organic  aC V RAMAN AVENUE, SADASHIVANAGAR, P B \#8005, BANGALORE 560 080, INDIAbINDIAN ACAD SCIENCEScSEP a1399-14080 v1263 a

Two new Zn(II) and Cd(II) based homochiral metal-organic frameworks (MOFs) [SerCdOAc and Zn(Ser)(2)] have been synthesized using pyridyl functionalized amino acid, viz., serine, as an organic linker. The SerCdOAc structure is three dimensional, while that of the Zn(Ser)(2) is two dimensional. The polar voids of the corresponding MOFs are filled with solvent molecules (water in the case of SerCdOAc and methanol in the case of Zn(Ser)(2)). In both cases, metal centres, i.e., Zn(II) and Cd(II), are hexacoordinated. However, with a change in the solvent for synthesis, ligand coordination mode and incorporation of additional coordinated anion resulted in a great change in the final MOF architecture. Herein, for the first time, we could achieve structural variety and synthesize MOFs composed of only metal ion and pyridyl functionalized amino acid linker.

10aAmino acid10acrystal engineering10ahydrogen bonding10ametal organic framework1 aKundu, Tanay1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/structural-diversity-serine-derived-homochiral-metal-organic-frameworks-000627nas a2200181 4500008004100000022001400041245008700055210006900142260000800211300001000219490000700229653000800236653001300244653002200257100002800279700002000307856011800327 2014 eng d a2053-273300aSulfonic acid loaded self-standing covalent organic membrane for proton conduction0 aSulfonic acid loaded selfstanding covalent organic membrane for  cMAY aC11500 v7010aCOF10aMembrane10aproton conduction1 aSasmal, Himadri, Sekhar1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/sulfonic-acid-loaded-self-standing-covalent-organic-membrane-proton-conduction00565nas a2200181 4500008004100000022001400041245006500055210006500120260000800185300000900193490000700202653000800209653000800217653001900225100002200244700002000266856009700286 2014 eng d a2053-273300aSupramolecular gel to metal organic framework transformation0 aSupramolecular gel to metal organic framework transformation cMAR aC5260 v7010agel10aMOF10aSupramolecular1 aChakraborty, Amit1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/supramolecular-gel-metal-organic-framework-transformation00639nas a2200181 4500008004100000022001400041245008200055210006900137260000800206300001000214490000700224653003200231653002100263653002100284100002100305700002000326856011100346 2014 eng d a2053-273300aTandem catalysis by in-situ generated microporous COF-Pd nanoparticle hybrids0 aTandem catalysis by insitu generated microporous COFPd nanoparti cMAR aC10340 v7010acovalent organic frameworks10aPd nanoparticles10atandem catalysis1 aBhadra, Mohitosh1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/tandem-catalysis-situ-generated-microporous-cof-pd-nanoparticle-hybrids00983nas a2200181 4500008004100000022001400041245009400055210006900149260011000218300001400328490000700342520025500349100002000604700001900624700002100643700002000664856011700684 2014 eng d a1466-803300aVariation of CO2 adsorption in isostructural Cd(II)/Co(II) based MOFs by anion modulation0 aVariation of CO2 adsorption in isostructural CdIICoII based MOFs aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcJUN a5012-50200 v163 a

{A potential multidentate tris-pyridyl ligand has been synthesized, and later employed for the tailoring of four isostructural cadmium(II)/cobalt(II) two dimensional (2D) metal organic frameworks, [[ M(dmpt)(2)(X)(2)].xS](n), where S = solvent

1 aSingh, Udai, P.1 aNarang, Shikha1 aPachfule, Pradip1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/variation-co2-adsorption-isostructural-cdiicoii-based-mofs-anion-modulation-001773nas a2200169 4500008004100000022001400041245011400055210006900169260011000238300001600348490000600364520104100370100001901411700002001430700002201450856013101472 2014 eng d a2050-748800aZIF-8@PBI-Bul composite membranes: elegant effects of PBI structural variations on gas permeation performance0 aZIF8PBIBul composite membranes elegant effects of PBI structural aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcAUG a12962-129670 v23 a

The composites of metal organic frameworks (MOFs) and polymers look promising as membrane materials for gas separation, provided benefits of both the components can be shown successfully. This work shows that the structural architecture of polybenzimidazole (PBI) is highly advantageous in offering attractive gas permeation properties of its composites with MOFs. PBI-Bul and its N-substituted (methyl and 4-tert-butylbenzyl) derivatives were blended with ZIF-8. In general, homogeneous blend formation of ZIF-8 was achieved with all three polymers, as supported by SEM. Wide angle X-ray diffraction, mechanical property analysis and density measurements of the composite membranes were performed in order to understand the effects of physical blending of MOFs and polymers. Gas permeability analysis of the composite membranes revealed that the properties of MOFs as well as those of polymers arising from their structural architecture are responsible for governing the permeability and selectivity of the resulting composites.

1 aBhaskar, Anand1 aBanerjee, Rahul1 aKharul, Ulhas, K. uhttps://library.ncl.res.in/content/zif-8pbi-bul-composite-membranes-elegant-effects-pbi-structural-variations-gas-permeation-001116nas a2200193 4500008004100000022001400041245009300055210006900148260011000217300001200327490000700339520033400346100002900680700002400709700002100733700002300754700002000777856012500797 2015 eng d a1359-734500aBifunctional covalent organic frameworks with two dimensional organocatalytic micropores0 aBifunctional covalent organic frameworks with two dimensional or aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcNOV a310-3130 v513 a

We report the successful incorporation of bifunctional (acid/base) catalytic sites in the crystalline organocatalytic porous COF (2,3-DhaTph). Due to the presence of acidic (catachol) and basic (porphyrin) sites, 2,3-DhaTph shows significant selectivity, reusability, and excellent ability to perform the cascade reaction.

1 aShinde, Digambar, Balaji1 aKandambeth, Sharath1 aPachfule, Pradip1 aKumar, Raya, Rahul1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/bifunctional-covalent-organic-frameworks-two-dimensional-organocatalytic-micropores-001915nas a2200241 4500008004100000022001400041245007500055210006900130260011000199300001400309490000600323520105000329100001701379700002301396700002401419700001801443700002001461700002601481700001801507700001901525700002001544856010901564 2015 eng d a2041-652000aChemical sensing in two dimensional porous covalent organic nanosheets0 aChemical sensing in two dimensional porous covalent organic nano aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcAPR a3931-39390 v63 a

Two new imide-based crystalline, porous, and chemically stable covalent organic frameworks (COFs) (TpBDH and TfpBDH) have been successfully synthesized employing solvothermal crystallization route. Furthermore, thin layered covalent organic nanosheets (CONs) were derived from these bulk COFs by the simple liquid phase exfoliation method. These 2D CONs showcase increased luminescence intensity compared to their bulk counterparts (COFs). Notably, TfpBDH-CONs showcase good selectivity and prominent, direct visual detection towards different nitroaromatic analytes over TpBDH-CONs. Quite interestingly, TfpBDH-CONs exhibit a superior ``turn-on'' detection capability for 2,4,6-trinitrophenol (TNP) in the solid state, but conversely, they also show a ``turn-off'' detection in the dispersion state. These findings describe a new approach towards developing an efficient, promising fluorescence chemosensor material for both visual and spectroscopic detection of nitroaromatic compounds with very low [10(-5) (M)] analyte concentrations.

1 aDas, Gobinda1 aBiswal, Bishnu, P.1 aKandambeth, Sharath1 aVenkatesh, V.1 aKaur, Gagandeep1 aAddicoat, Matthew, A.1 aHeine, Thomas1 aVerma, Sandeep1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/chemical-sensing-two-dimensional-porous-covalent-organic-nanosheets-001278nas a2200193 4500008004100000022001400041245009900055210006900154260011000223300001200333490000600345520049100351100003100842700002000873700001900893700002000912700002400932856012800956 2015 eng d a2041-652000aFe(III) phytate metallogel as a prototype anhydrous, intermediate temperature proton conductor0 aFeIII phytate metallogel as a prototype anhydrous intermediate t aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcOCT a603-6070 v63 a

A proton conducting metallogel [FNPA; ferric nitrate (FN)-phytic acid (PA)] is synthesized by immobilizing a protogenic ligand (phytic acid) using iron(III) nitrate in DMF. The xerogel shows high proton conductivity of 2.4 x 10(-2) S cm(-1) at 120 degrees C, the best value known among all metal organic materials (MOMs). Marking the first such attempt in MOMs, an electrode made using the xerogel showed a power density of 0.94 mW cm(-2) at 0.6 V under dry fuel cell conditions.

1 aAiyappa, Harshitha, Barike1 aSaha, Subhadeep1 aWadge, Pritish1 aBanerjee, Rahul1 aKurungot, Sreekumar uhttps://library.ncl.res.in/content/feiii-phytate-metallogel-prototype-anhydrous-intermediate-temperature-proton-conductor-001944nas a2200289 4500008004100000022001400041245009300055210006900148260007100217300001600288490000800304520090600312100002201218700002301240700002501263700002701288700002801315700003201343700002401375700002001399700001901419700001901438700002501457700002201482700002201504856012801526 2015 eng d a0002-786300aGelation landscape engineering using a multi-reaction supramolecular hydrogelator system0 aGelation landscape engineering using a multireaction supramolecu a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcNOV a14236-142390 v1373 a

Simultaneous control of the kinetics and thermodynamics of two different types of covalent chemistry allows pathway selectivity in the formation of hydrogelating molecules from a complex reaction network. This can lead to a range of hydrogel materials with vastly different properties, starting from a set of simple starting compounds and reaction conditions. Chemical reaction between a trialdehyde and the tuberculosis drug isoniazid can form one, two, or three hydrazone connectivity products, meaning kinetic gelation pathways can be addressed. Simultaneously, thermodynamics control the formation of either a keto or an enol tautomer of the products, again resulting in vastly different materials. Overall, this shows that careful navigation of a reaction landscape using both kinetic and thermodynamic selectivity can be used to control material selection from a complex reaction network.

1 aFoster, Jamie, S.1 aZurek, Justyna, M.1 aAlmeida, Nuno, M. S.1 aHendriksen, Wouter, E.1 ale Sage, Vincent, A. A.1 aLakshminarayanan, Vasudevan1 aThompson, Amber, L.1 aBanerjee, Rahul1 aEelkema, Rienk1 aMulvana, Helen1 aPaterson, Martin, J.1 avan Esch, Jan, H.1 aLloyd, Gareth, O. uhttps://library.ncl.res.in/content/gelation-landscape-engineering-using-multi-reaction-supramolecular-hydrogelator-system-001077nas a2200181 4500008004100000022001400041245007400055210006900129260011000198300001600308490000700324520037000331100002100701700002400722700002000746700002000766856010900786 2015 eng d a1359-734500aHollow tubular porous covalent organic framework (COF) nanostructures0 aHollow tubular porous covalent organic framework COF nanostructu aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcJUN a11717-117200 v513 a

Hollow and tubular TpPa-COF structures have been synthesized by template-assisted replication of nanometer sized ZnO-nanorods. The hollow structures composed of microporous TpPa shells have high periodicity, moderate porosity, chemical stability and capsule shaped morphology as revealed by X-ray diffraction, porosity measurements, and SEM and TEM analyses.

1 aPachfule, Pradip1 aKandmabeth, Sharath1 aMallick, Arijit1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/hollow-tubular-porous-covalent-organic-framework-cof-nanostructures-001207nas a2200181 4500008004100000022001400041245020300055210006900258260011000327300001400437490000700451520036100458100001800819700001700837700002000854700001900874856013200893 2015 eng d a1466-803300aOne-dimensional water cages with repeat units of (H2O)(24) resembling pagodane trapped in a 3D coordination polymer: proton conduction and tunable luminescence emission by adsorption of anionic dyes0 aOnedimensional water cages with repeat units of H2O24 resembling aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcMAY a4439-44430 v173 a

A 3D-coordination polymer was shown to trap one-dimensional polyhedral water cages consisting of repeat units of (H2O)(24), the geometry of which resembles the exotic organic molecule pagodane. Further, this material exhibited proton conduction ability and tunable luminescence emission by adsorption of anionic dyes such as the fluorescein dianion.

1 aMaity, Kartik1 aKundu, Tanay1 aBanerjee, Rahul1 aBiradha, Kumar uhttps://library.ncl.res.in/content/one-dimensional-water-cages-repeat-units-h2o24-resembling-pagodane-trapped-3d-coordination-000964nas a2200181 4500008004100000022001400041245007900055210006900134260011000203300001400313490000600327520025200333100001700585700001700602700003100619700002000650856011200670 2015 eng d a2046-206900aPhosphate enriched polyoxometalate based ionic salts for proton conduction0 aPhosphate enriched polyoxometalate based ionic salts for proton  aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcDEC a2333-23370 v53 a

A series of [NiMo12O30(PO4)(8)](n-) POM anion and organic cation based ionic composites have been prepared in hydrothermal conditions. The ionic composites with protonated ethylene diamine molecules have been tested for proton conductivity.

1 aDey, Chandan1 aKundu, Tanay1 aAiyappa, Harshitha, Barike1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/phosphate-enriched-polyoxometalate-based-ionic-salts-proton-conduction-001821nas a2200241 4500008004100000022001400041245010700055210006900162260011000231300001600341490000600357520090000363100002301263700002401286700001901310700002901329700001701358700001901375700001801394700002201412700002001434856012501454 2015 eng d a2050-748800aPore surface engineering in porous, chemically stable covalent organic frameworks for water adsorption0 aPore surface engineering in porous chemically stable covalent or aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcNOV a23664-236690 v33 a

Herein, we have explored the possibility of a class of covalent organic frameworks (COFs) as water adsorbing materials. We have selected, synthesized 12 chemically stable functionalized Schiff base COFs and thoroughly studied their water uptake behaviour. Further, a deep understanding was developed with these COFs towards the effects of condensation pressure of water and hydrophilic/hydrophobic groups present in the COF pores on water absorption capacity and ultimately, their recyclability. Among all reported COFs, TpPa-1 shows the highest water uptake of 30 wt% (368 cm(3) g(-1); 17 mmol g(-1)) at P/P-0 = 0.3, which is also comparable with the recently reported carbon materials and few well known MOFs. This study also reveals that the overall water uptake of COFs can be tuned systematically based on chemical functionality and pore size in a wider window of relative pressures.

1 aBiswal, Bishnu, P.1 aKandambeth, Sharath1 aChandra, Suman1 aShinde, Digambar, Balaji1 aBera, Saibal1 aKarak, Suvendu1 aGarai, Bikash1 aKharul, Ulhas, K.1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/pore-surface-engineering-porous-chemically-stable-covalent-organic-frameworks-water-001697nas a2200181 4500008004100000022001400041245012800055210006900183260011000252300001400362490000600376520092000382100002301302700001901325700002001344700002201364856012901386 2015 eng d a2040-336400aSelective interfacial synthesis of metal-organic frameworks on a polybenzimidazole hollow fiber membrane for gas separation0 aSelective interfacial synthesis of metalorganic frameworks on a  aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcMAR a7291-72980 v73 a

Metal-organic frameworks (MOFs) have gained immense attention as new age materials due to their tuneable properties and diverse applicability. However, efforts on developing promising materials for membrane based gas separation, and control over the crystal growth positions on polymeric hollow fiber membranes still remain key challenges. In this investigation, a new, convenient and scalable room temperature interfacial method for growing MOFs (ZIF-8 and CuBTC) on either the outer or inner side of a polybenzimidazole based hollow fiber (PBI-BuI-HF) membrane surface has been achieved in a controlled manner. This was made possible by the appropriate selection of an immiscible solvent pair and the synthetic conditions. The growth of MOFs on the PBI-BuI-HF membrane by the interfacial method was continuous and showed an appreciable gas separation performance, conveying promise for their applicability.

1 aBiswal, Bishnu, P.1 aBhaskar, Anand1 aBanerjee, Rahul1 aKharul, Ulhas, K. uhttps://library.ncl.res.in/content/selective-interfacial-synthesis-metal-organic-frameworks-polybenzimidazole-hollow-fiber-001796nas a2200217 4500008004100000022001400041245008100055210006900136260009000205300000900295490000600304520100700310100002401317700001801341700002501359700001901384700001801403700001901421700002001440856011801460 2015 eng d a2041-172300aSelf-templated chemically stable hollow spherical covalent organic framework0 aSelftemplated chemically stable hollow spherical covalent organi aMACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLANDbNATURE PUBLISHING GROUPcAPR a67860 v63 a

Covalent organic frameworks are a family of crystalline porous materials with promising applications. Although active research on the design and synthesis of covalent organic frameworks has been ongoing for almost a decade, the mechanisms of formation of covalent organic frameworks crystallites remain poorly understood. Here we report the synthesis of a hollow spherical covalent organic framework with mesoporous walls in a single-step template-free method. A detailed time-dependent study of hollow sphere formation reveals that an inside-out Ostwald ripening process is responsible for the hollow sphere formation. The synthesized covalent organic framework hollow spheres are highly porous (surface area similar to 1,500m(2) g(-1)), crystalline and chemically stable, due to the presence of strong intramolecular hydrogen bonding. These mesoporous hollow sphere covalent organic frameworks are used for a trypsin immobilization study, which shows an uptake of 15.5 mu mol g(-1) of trypsin.

1 aKandambeth, Sharath1 aVenkatesh, V.1 aShinde, Digambar, B.1 aKumari, Sushma1 aHalder, Arjun1 aVerma, Sandeep1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/self-templated-chemically-stable-hollow-spherical-covalent-organic-framework-101982nas a2200253 4500008004100000022001400041245016200055210006900217260007700286300001400363490000700377520097900384653002601363653001901389653002901408653001501437653002601452100002201478700002601500700002301526700002001549700003101569856012801600 2015 eng d a0947-653900aSingle crystal-to-single crystal site-selective postsynthetic metal exchange in a Zn-MOF based on semi-rigid tricarboxylic acid and access to bimetallic MOFs0 aSingle crystaltosingle crystal siteselective postsynthetic metal aBOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANYbWILEY-V C H VERLAG GMBHcFEB a2759-27650 v213 a

The metal ions in a neutral Zn-MOF constructed from tritopic triacid H3L with inherent concave features, rigid core, and peripheral flexibility are found to exist in two distinct SBUs, that is, 0D and 1D. This has allowed site-selective postsynthetic metal exchange (PSME) to be investigated and reactivities of the metal ions in two different environments in coordination polymers to be contrasted for the first time. Site-selective transmetalation of Zn ions in the discrete environment is shown to occur in a single crystal-to-single crystal (SCSC) fashion, with metal ions such as Fe3+, Ru3+, Cu2+, Co2+, etc., whereas those that are part of 1D SBU sustain structural integrity, leading to novel bimetallic MOFs, which are inaccessible by conventional approaches. To the best of our knowledge, site-selective postsynthetic exchange of an intraframework metal ion in a MOF that contains metal ions in discrete as well as polymeric SBUs is heretofore unprecedented.

10acoordination polymers10ametal-exchange10ametal-organic frameworks10aMetathesis10aX-ray crystallography1 aBajpai, Alankriti1 aChandrasekhar, Pujari1 aGovardhan, Savitha1 aBanerjee, Rahul1 aMoorthy, Jarugu, Narasimha uhttps://library.ncl.res.in/content/single-crystal-single-crystal-site-selective-postsynthetic-metal-exchange-zn-mof-based-001396nas a2200205 4500008004100000022001400041245008900055210006900144260011000213300001400323490000600337520060100343100002000944700001800964700002600982700002301008700001801031700002001049856012101069 2015 eng d a2041-652000aSolid state organic amine detection in a photochromic porous metal organic framework0 aSolid state organic amine detection in a photochromic porous met aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcDEC a1420-14250 v63 a

A new Mg(II) based photochromic porous metal-organic framework (MOF) has been synthesized bearing naphthalenediimide (NDI) chromophoric unit. This MOF (Mg-NDI) shows instant and reversible solvatochromic behavior in presence of solvents with different polarity. Mg-NDI also exhibits fast and reversible photochromism via radical formation. Due to the presence of electron deficient NDI moiety, this MOF exhibits selective organic amine (electron rich) sensing in solid state. The organic amine detection has been confirmed by photoluminescence quenching experiment and visual color change.

1 aMallick, Arijit1 aGarai, Bikash1 aAddicoat, Matthew, A.1 aPetkov, Petko, St.1 aHeine, Thomas1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/solid-state-organic-amine-detection-photochromic-porous-metal-organic-framework-000677nas a2200169 4500008004100000022001400041245007000055210006900125260011000194300001400304490000700318100002000325700002000345700002200365700001900387856010100406 2016 eng d a1466-803300a2016 New talent: crystal engineering at its biggest and strongest0 a2016 New talent crystal engineering at its biggest and strongest aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcMAY a3963-39670 v181 aBanerjee, Rahul1 aDay, Graeme, M.1 aFriscic, Tomislav1 aZhang, Hongjie uhttps://library.ncl.res.in/content/2016-new-talent-crystal-engineering-its-biggest-and-strongest01493nas a2200217 4500008004100000245007900041210006900120260000800189300001600197490000700213520077400220100001800994700002401012700001901036700002101055700001501076700002501091700002501116700002001141856011401161 2016 eng d00aChemically delaminated free-standing ultrathin covalent organic nanosheets0 aChemically delaminated freestanding ultrathin covalent organic n cDEC a15604-156080 v553 aCovalent organic nanosheets (CONs) are a new class of porous thin two-dimensional (2D) nanostructures that can be easily designed and functionalized and could be useful for separation applications. Poor dispersion, layer restacking, and difficult postsynthetic modifications are the major hurdles that need to be overcome to fabricate scalable CON thin films. Herein, we present a unique approach for the chemical exfoliation of an anthracene-based covalent organic framework (COF) to N-hexylmaleimide-functionalized CONs, to yield centimeter-sized free-standing thin films through layer-by-layer CON assembly at the air-water interface. The thinlayer fabrication technique presented here is simple, scalable, and does not require any surfactants or stabilizing agents.1 aKhayum, Abdul1 aKandambeth, Sharath1 aMitra, Shouvik1 aNair, Sanoop, B.1 aDas, Anuja1 aNagane, Samadhan, S.1 aMukherjee, Rabibrata1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/chemically-delaminated-free-standing-ultrathin-covalent-organic-nanosheets01447nas a2200241 4500008004100000022001400041245013900055210006900194260007500263300001400338490000700352520051100359653003200870653001900902653001400921653002600935653002000961100002300981700002701004700002001031700002201051856013201073 2016 eng d a0947-653900aChemically stable covalent organic framework (COF)-polybenzimidazole hybrid membranes: enhanced gas separation through pore modulation0 aChemically stable covalent organic framework COFpolybenzimidazol aPOSTFACH 101161, 69451 WEINHEIM, GERMANYbWILEY-V C H VERLAG GMBHcMAR a4695-46990 v223 a

Highly flexible, TpPa-1@PBI-BuI and TpBD@PBI-BuI hybrid membranes based on chemically stable covalent organic frameworks (COFs) could be obtained with the polymer. The loading obtained was substantially higher (50%) than generally observed with MOFs. These hybrid membranes show an exciting enhancement in permeability (about sevenfold) with appreciable separation factors for CO2/N-2 and CO2/CH4. Further, we found that with COF pore modulation, the gas permeability can be systematically enhanced.

10acovalent organic frameworks10aGas separation10amembranes10amicroporous materials10apore modulation1 aBiswal, Bishnu, P.1 aChaudhari, Harshal, D.1 aBanerjee, Rahul1 aKharul, Ulhas, K. uhttps://library.ncl.res.in/content/chemically-stable-covalent-organic-framework-cof-polybenzimidazole-hybrid-membranes-enhanced01574nas a2200193 4500008004100000022001400041245009000055210006900145260007100214300001400285490000700299520083100306100003101137700001901168700002901187700002001216700002401236856012001260 2016 eng d a0897-475600aCobalt-modified covalent organic framework as a robust wateroxidation electrocatalyst0 aCobaltmodified covalent organic framework as a robust wateroxida a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcJUN a4375-43790 v283 a

The development of stable, efficient oxygen evolution reaction (OER) catalyst capable of oxidizing water is one of the premier challenges in the conversion of solar energy to electrical energy, because of its poor kinetics. Herein, a bipyridine-containing covalent organic framework (TpBpy) is utilized as an OER catalyst by way of engineering active Co(II) ions into its porous framework. The as-obtained Co-TpBpy retains a highly accessible surface area (450 m(2)/g) with exceptional stability, even after 1000 cycles and 24 h of OER activity in phosphate buffer under neutral pH conditions with an overpotential of 400 mV at a current density of 1 mA/cm(2). The unusual catalytic stability of Co-TpBpy arises from the synergetic effect of the inherent porosity and presence of coordinating units in the COF skeleton.

1 aAiyappa, Harshitha, Barike1 aThote, Jayshri1 aShinde, Digambar, Balaji1 aBanerjee, Rahul1 aKurungot, Sreekumar uhttps://library.ncl.res.in/content/cobalt-modified-covalent-organic-framework-robust-wateroxidation-electrocatalyst01626nas a2200217 4500008004100000245008300041210006900124260000800193300001200201490000600213520088800219100001901107700003101126700002301157700002401180700002301204700002901227700002101256700002001277856011101297 2016 eng d00aConstructing covalent organic frameworks in water via dynamic covalent bonding0 aConstructing covalent organic frameworks in water via dynamic co cNOV a402-4070 v33 aThe formation of keto-enamine based crystalline, porous polymers in water is investigated for the first time. Facile access to the Schiff base reaction in water has been exploited to synthesize stable porous structures using the principles of Dynamic Covalent Chemistry (DCC). Most credibly, the water-based Covalent Organic Frameworks (COFs) possess chemical as well as physical properties such as crystallinity, surface area and porosity, which is comparable to their solvothermal counterparts. The formation of COFs in water is further investigated by understanding the nature of the monomers formed using hydroxy and non-hydroxy analogues of the aldehyde. This synthetic route paves a new way to synthesize COFs using a viable, greener route by utilization of the DCC principles in conjunction with the keto-enol tautomerism to synthesize useful, stable and porous COFs in water.1 aThote, Jayshri1 aAiyappa, Harshitha, Barike1 aKumar, Raya, Rahul1 aKandambeth, Sharath1 aBiswal, Bishnu, P.1 aShinde, Digambar, Balaji1 aRoy, Neha, Chaki1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/constructing-covalent-organic-frameworks-water-dynamic-covalent-bonding00898nas a2200253 4500008004100000245011700041210006900158260000800227300001400235490000700249100001800256700002400274700002300298700002000321700002100341700002600362700002600388700002500414700001700439700001800456700001900474700002000493856013100513 2016 eng d00aDecoding the morphological diversity in two dimensional crystalline porous polymers by core planarity modulation0 aDecoding the morphological diversity in two dimensional crystall cJUN a7806-78100 v551 aHalder, Arjun1 aKandambeth, Sharath1 aBiswal, Bishnu, P.1 aKaur, Gagandeep1 aRoy, Neha, Chaki1 aAddicoat, Matthew, A.1 aSalunke, Jagadish, K.1 aBanerjee, Subhrashis1 aVanka, Kumar1 aHeine, Thomas1 aVerma, Sandeep1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/decoding-morphological-diversity-two-dimensional-crystalline-porous-polymers-core-planarity01463nas a2200169 4500008004100000022001400041245011600055210006900171260007100240300001400311490000700325520078500332100002101117700001801138700002001156856011701176 2016 eng d a0020-166900aFunctionalization and isoreticulation in a series of metal-organic frameworks derived from pyridinecarboxylates0 aFunctionalization and isoreticulation in a series of metalorgani a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcAUG a7200-72050 v553 a

The partially fluorinated metal-organic frameworks (F-MOFs) have been constructed from 3-fltoro-4-pyridinecarboxylic acid and trans-3-fluoro-4-pyridineacrylic acid linkers using Mn2+, Co2+, and, Cd2+ metals via the solvothetrnal method, which show isostructural isomerism with their nonfluorinated counterparts synthesized using 4-pyridinecarboxylic acid and trans-4-pyridineacrylic acid, respectively. The simultaneous effect of partial fluorination and isoreticulation on structure and H-2 adsorption has been studied systematically in isostructural nonfluorinated and partially fluorinated MOFs, which shows that the increment in the hydrogen uptake properties in F-MOFs is not a universal phenomenon but is rather system-specific and changes from one system to another.

1 aPachfule, Pradip1 aGarai, Bikash1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/functionalization-and-isoreticulation-series-metal-organic-frameworks-derived01032nas a2200169 4500008004100000245009000041210006900131260000800200300001200208490000700220520043600227100001700663700001900680700002200699700002000721856012100741 2016 eng d00aGadolinium(III)-based porous luminescent metal-organic frameworks for bimodal imaging0 aGadoliniumIIIbased porous luminescent metalorganic frameworks fo cAUG a728-7320 v813 aGd-III-based metal-organic frameworks, Gd-pDBI-1 and Gd-pDBI-2, have been synthesized using the linker pDBI (pDBI=1,4-bis(5-carboxy-1H-benzimidazole-2yl)benzene). They exhibited structural diversity due to subtle change in reaction constituents. Owing to the judicious choice of the fluorescent linker, the materials could be used for bimodal imaging (fluorescent and magnetic resonance) and displayed a modest T1 relaxivity value.1 aKundu, Tanay1 aMitra, Shouvik1 aDiaz, David, Diaz1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/gadoliniumiii-based-porous-luminescent-metal-organic-frameworks-bimodal-imaging-001928nas a2200181 4500008004100000022001400041245010300055210006900158260007100227300001400298490000700312520120800319100002101527700002001548700002001568700003101588856012701619 2016 eng d a0020-166900aHigh loading of pd nanoparticles by interior functionalization of mofs for heterogeneous catalysis0 aHigh loading of pd nanoparticles by interior functionalization o a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcMAR a2345-23540 v553 a

In this report, the issue related to nanoparticle (NP) agglomeration upon increasing their loading amount into metal-organic frameworks (MOFs) has been addressed by functionalization of MOFs with alkyne groups. The alkynophilicity of the Pd2+ (or other noble metals) ions has been utilized successfully for significant loading of Pd NPs into alkyne functionalized MOFs. It has been shown here that the size and loading amount of Pd NPs are highly dependent on the surface area and pore width of the MOFs. The loading amount of Pd NPs was increased monotonically without altering their size distribution on a particular MOF. Importantly, the distinct role of alkyne groups for Pe(2+) stabilization has also been demonstrated by performing a control experiment considering a MOF without an alkyne moiety. The preparation of NPs involved two distinct steps viz. adsorption of metal ions inside MOFs and reduction of metal ions. Both of these steps were monitored by microscopic techniques. This report also demonstrates the applicability of Pd@MOF NPs as extremely efficient heterogeneous catalysts for Heck-coupling and hydrogenation reactions of aryl bromides or iodides and alkenes, respectively.

1 aGole, Bappaditya1 aSanyal, Udishnu1 aBanerjee, Rahul1 aMukherjee, Partha, Sarathi uhttps://library.ncl.res.in/content/high-loading-pd-nanoparticles-interior-functionalization-mofs-heterogeneous-catalysis-001778nas a2200205 4500008004100000022001400041245009400055210006900149260007100218300001400289490000700303520101700310100001901327700001701346700001701363700002601380700001801406700002001424856012801444 2016 eng d a0897-475600aInterplaying intrinsic and extrinsic proton conductivities in covalent organic frameworks0 aInterplaying intrinsic and extrinsic proton conductivities in co a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcMAR a1489-14940 v283 a

A sulfonic-acid-based covalent organic framework (TpPa-SO3H) has been synthesized that exhibits intrinsic proton conductivity under anhydrous conditions. The sulfonic acid groups are aligned on the two-dimensional (2D) layers at periodic intervals and promote the proton hopping inside the hexagonal one-dimensional channel. The intrinsic proton conductivity of TpPa-SO3H was measured as 1.7 X 10(-5) S cm(-1) at 120 degrees C under anhydrous conditions. To enhance the proton conductivity, we have synthesized a hybrid COF TpPa(SO3H-Py) by a ligand-based solid-solution approach that contains sulfonic acid as the acidic site, as well as pyridine as the basic site, in order to immobilize acidic proton carrier molecules. Impregnation of phytic acid molecules inside the framework increases the anhydrous proton conductivity up to 5 x 10(-4) S cm(-1) at 120 degrees C. Such an approach highlights the advantage and first-time use of hybrid COF for interplaying intrinsic to extrinsic proton conductivity.

1 aChandra, Suman1 aKundu, Tanay1 aDey, Kaushik1 aAddicoat, Matthew, A.1 aHeine, Thomas1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/interplaying-intrinsic-and-extrinsic-proton-conductivities-covalent-organic-frameworks-001987nas a2200253 4500008004100000022001400041245010200055210006900157260011000226300001400336490000600350520102900356100002901385700003101414700002101445700002301466700001901489700002401508700001801532700001701550700002401567700002001591856012201611 2016 eng d a2050-748800aMechanochemically synthesized covalent organic framework as a proton-conducting solid electrolyte0 aMechanochemically synthesized covalent organic framework as a pr aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcJAN a2682-26900 v43 a

Mechanochemistry has become an increasingly important synthetic tool for a waste-free environment. However, the poor quality of the so-derived materials in terms of their crystallinity and porosity has been their major drawback for any practical applications. In this report, we have for the first time successfully leveraged such characteristics to show that the mechanochemically synthesized bipyridine based covalent organic framework (COF) outperforms its conventional solvothermal counterpart as an efficient solid-state electrolyte in PEM fuel cells. Marking the first such attempt in COFs, a Membrane Electrode Assembly (MEA) fabricated using the mechanochemically synthesized COF was observed to inhibit the fuel crossover and build up a stable Open Circuit Voltage (OCV = 0.93 V at 50 degrees C), thereby establishing itself as an effective solid electrolyte material (with a proton conductivity of 1.4 x 10(-2) S cm(-1)), while the solvothermally synthesized COF proved ineffective under similar conditions.

1 aShinde, Digambar, Balaji1 aAiyappa, Harshitha, Barike1 aBhadra, Mohitosh1 aBiswal, Bishnu, P.1 aWadge, Pritish1 aKandambeth, Sharath1 aGarai, Bikash1 aKundu, Tanay1 aKurungot, Sreekumar1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/mechanochemically-synthesized-covalent-organic-framework-proton-conducting-solid-001611nas a2200169 4500008004100000022001400041245007600055210006900131260011000200300001400310490000600324520094400330100001801274700002001292700002001312856010901332 2016 eng d a2041-652000aPhotochromic metal-organic frameworks for inkless and erasable printing0 aPhotochromic metalorganic frameworks for inkless and erasable pr aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcDEC a2195-22000 v73 a

Inkless and erasable printing is the key solution towards a more sustainable paper industry, in terms of reducing paper wastages and the associated environmental hazards from waste paper processing. However, only a few cases have been reported in the literature where inkless printing has been tested in some practical systems. In an attempt to address this solution, we used photochromic metal-organic frameworks (MOFs) and tested their capability as inkless and erasable printing media. The printing was performed using sunlight as the light source on MOF-coated papers. The resulting printing had good resolution and stability, and was capable of being read both by the human eye and smart electronic devices; furthermore, the paper could be reused for several cycles without any significant loss in intensity. Interestingly, different coloured printing with a similar efficiency was achieved by varying the structure of the MOF.

1 aGarai, Bikash1 aMallick, Arijit1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/photochromic-metal-organic-frameworks-inkless-and-erasable-printing-001516nas a2200181 4500008004100000245010100041210006900142260000800211300001400219490000700233520087300240100001801113700002001131700001501151700002501166700002001191856012301211 2016 eng d00aSelf-exfoliated metal-organic nanosheets through hydrolytic unfolding of metal-organic polyhedra0 aSelfexfoliated metalorganic nanosheets through hydrolytic unfold cMAY a7361-73660 v233 aFew-layers thick metal-organic nanosheets have been synthesized using water-assisted solid-state transformation through a combined top-down and bottom-up approach. The metal-organic polyhedra (MOPs) convert into metal-organic frameworks (MOFs) which subsequently selfexfoliate into few-layered metal-organic nanosheets. These MOP crystals experience a hydrophobicity gradient with the inner surface during contact with water because of the existence of hydrophobic spikes on their outer surface. When the amount of water available for interaction is higher, the resultant layers are not stacked to form bulk materials; instead few-layered nanosheets with high uniformity were obtained in high yield. The phenomenon has resulted high yield production of uniformly distributed layered metal-organic nanosheets from three different MOPs, showing its general adaptability.1 aGarai, Bikash1 aMallick, Arijit1 aDas, Anuja1 aMukherjee, Rabibrata1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/self-exfoliated-metal-organic-nanosheets-through-hydrolytic-unfolding-metal-organic01333nas a2200169 4500008004100000245013400041210006900175260000800244300001400252490000600266520066100272100002000933700002900953700002000982700002901002856013201031 2016 eng d00aState-of-the-art catechol porphyrin COF catalyst for chemical fixation of carbon dioxide via cyclic carbonates and oxazolidinones0 aStateoftheart catechol porphyrin COF catalyst for chemical fixat cMAY a6152-61580 v63 aA highly porous, crystalline catechol porphyrin COF was synthesized and applied as an organocatalyst for the chemical fixation of carbon dioxide to synthesize value-added chemicals such as cyclic carbonates and oxazolidinones under solvent-free and transition-metal-free conditions. The high surface area and the functionalities of the COF catalyst act synergistically to activate the starting material. The 2,3-DhaTph shows excellent activity towards cyclic carbonates at the atmospheric pressure of carbon dioxide. Additionally, this catalytic system is recyclable in nature and provides a higher turnover number than previously reported organocatalysts.1 aSaptal, Vitthal1 aShinde, Digambar, Balaji1 aBanerjee, Rahul1 aBhanage, Bhalchandra, M. uhttps://library.ncl.res.in/content/state-art-catechol-porphyrin-cof-catalyst-chemical-fixation-carbon-dioxide-cyclic-carbonates01586nas a2200205 4500008004100000022001400041245008900055210006900144260007100213300001400284490000700298520083700305100002001142700002101162700002001183700001901203700002001222700002201242856011601264 2016 eng d a0897-475600aSupramolecular metallogel that imparts self-healing properties to other gel networks0 aSupramolecular metallogel that imparts selfhealing properties to a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcMAY a3210-32170 v283 a

A unique proton conductive and moldable supramolecular metallogel (CuA-Ox-gel) made upon mixing at room temperature well-defined stock solutions of Cu(OAc)(2). H2O and oxalic acid dehydrate was found to have self-healing properties. Remarkably, the system also displayed an unprecedented ability to impart self-healing properties to other gel networks lacking this capacity. A self-healed CuA-Ox metallogel was found to have essentially the same nanofibrillar morphology, thermal stability, rheological properties, and conductivity as the freshly prepared sample. The discovery also allowed the fabrication of self-healing conductive composites containing conductive carbonaceous materials. Overall, this work serves as a proof of concept for the transfer of self-healing properties between completely different gel networks.

1 aFeldner, Tobias1 aHaering, Marleen1 aSaha, Subhadeep1 aEsquena, Jordi1 aBanerjee, Rahul1 aDiaz, David, Diaz uhttps://library.ncl.res.in/content/supramolecular-metallogel-imparts-self-healing-properties-other-gel-networks00463nas a2200133 4500008004100000022001400041245006000055210006000115260000800175490000700183100002000190700002400210856009500234 2017 eng d a1466-803300aCovalent organic frameworks and organic cage structures0 aCovalent organic frameworks and organic cage structures cSEP0 v191 aBanerjee, Rahul1 aChampness, Neil, R. uhttps://library.ncl.res.in/content/covalent-organic-frameworks-and-organic-cage-structures01171nas a2200205 4500008004100000245009300041210006900134260000800203300001400211490000700225520047500232100001900707700001800726700001700744700002200761700002500783700001700808700002000825856012000845 2017 eng d00aInterplaying anions in a supramolecular metallohydrogel to form metal organic frameworks0 aInterplaying anions in a supramolecular metallohydrogel to form  cAPR a3705-37080 v533 aThe remarkable effect of anions on the transition from supramolecular gels to crystalline phases has been described. An amino acid-based metallohydrogel was transformed into different metal-organic frameworks through the selective picking of anions. The metallohydrogel and the resulting metal-organic frameworks (MOFs) were thoroughly characterized. The results demonstrated controlled access over the binding of a particular anion to selectively form a particular MOF.1 aKarak, Suvendu1 aKumar, Sushil1 aBera, Saibal1 aDiaz, David, Diaz1 aBanerjee, Subhrashis1 aVanka, Kumar1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/interplaying-anions-supramolecular-metallohydrogel-form-metal-organic-frameworks01216nas a2200205 4500008004100000245009200041210006900133260000800202300001400210490000700224520050100231100002100732700001900753700003100772700002400803700002500827700001700852700002000869856012100889 2017 eng d00aPorous porphyrin organic polymer (PPOP) for visible light triggered hydrogen production0 aPorous porphyrin organic polymer PPOP for visible light triggere cAPR a4461-44640 v533 aA visible light active porphyrin-based porous organic polymer having high chemical stability and surface area has been synthesized and its ability to influence the photocatalytic activity of large band gap-TiO2 nanoparticles has been tested. The resultant composite shows improved photocatalytic activity as compared to the parent precursors. This study provides insights into the photosensitizing ability of the polymer in addition to its ability to firmly harbor nanoparticles onto its surface.1 aMukherjee, Gargi1 aThote, Jayshri1 aAiyappa, Harshitha, Barike1 aKandambeth, Sharath1 aBanerjee, Subhrashis1 aVanka, Kumar1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/porous-porphyrin-organic-polymer-ppop-visible-light-triggered-hydrogen-production02009nas a2200217 4500008004100000245017300041210006900214260000800283300001600291490000600307520117200313100002101485700002801506700001701534700002001551700002401571700002101595700002501616700002001641856013001661 2017 eng d00aPredesigned metal-anchored building block for in situ generation of Pd nanoparticles in porous covalent organic framework: application in heterogeneous tandem catalysis0 aPredesigned metalanchored building block for in situ generation  cAPR a13785-137920 v93 aThe development of nanoparticle-polymer-hybrid-based heterogeneous catalysts with high reactivity and good recyclability is highly desired for their applications in the chemical and pharmaceutical industries: Herein, we have developed a novel synthetic strategy by choosing a predesigned metal-anchored building block for in situ generation of metal (Pd) nanoparticles in the stable, porous, and crystalline covalent organic framework (COF), without using conventional reducing agents. In situ generation of Pd nanoparticles in the COF Skeleton is explicitly confirmed' from PXRD, XPS, TEM images, and N-15 NMR spectral analysis. This hybrid material is found to be an excellent reusable heterogeneous catalyst for the synthesis of biologically and pharmaceutically important 2-substituted benzofurans from 2-bromophencils and terminal alkynes via a tandem process with the turnover number up to 1101. The heterogeneity of the catalytic process is unambiguously verified by a mercury poisoning experiment and leaching test. This hybrid material shows superior catalytic performance compared to commercially available homogeneous as well as heterogeneous Pd catalysts.1 aBhadra, Mohitosh1 aSasmal, Himadri, Sekhar1 aBasu, Arghya1 aMidya, Siba, P.1 aKandambeth, Sharath1 aPachfule, Pradip1 aBalaraman, Ekambaram1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/predesigned-metal-anchored-building-block-situ-generation-pd-nanoparticles-porous-covalent02011nas a2200289 4500008004100000022001400041245008000055210006900135260007100204300001400275490000800289520102800297100001901325700002401344700002301368700002201391700003001413700002101443700002001464700002501484700002101509700001901530700001501549700002201564700002001586856011501606 2017 eng d a0002-786300aSelf-exfoliated guanidinium-based ionic covalent organic nanosheets (iCONs)0 aSelfexfoliated guanidiniumbased ionic covalent organic nanosheet a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcMAR a2823-28280 v1383 a

Covalent organic nanosheets (CONs) have emerged as functional two-dimensional materials for versatile applications. Although pi-pi stacking between layers, hydrolytic instability, possible restacking prevents their exfoliation on to few thin layered CONs from crystalline porous polymers. We anticipated rational designing of a structure by intrinsic ionic linker could be the solution to produce self-exfoliated CONs without external stimuli. In an attempt to address this issue, we have synthesized three self-exfoliated guanidinium halide based ionic covalent organic nanosheets (iCONs) with antimicrobial property. Self-exfoliation phenomenon has been supported by molecular dynamics (MD) simulation as well. Intrinsic ionic guanidinium unit plays the pivotal role for both self-exfoliation and antibacterial property against both Gram-positive and Gram-negative bacteria. Using such iCONs, we have devised a Mixed matrix membrane which could be useful for antimicrobial coatings with plausible medical benefits.

1 aMitra, Shouvik1 aKandambeth, Sharath1 aBiswal, Bishnu, P.1 aKhayum, Abdul, M.1 aChoudhury, Chandan, Kumar1 aMehta, Mihir, R.1 aKaur, Gagandeep1 aBanerjee, Subhrashis1 aPrabhune, Asmita1 aVerma, Sandeep1 aRoy, Sudip1 aKharul, Ulhas, K.1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/self-exfoliated-guanidinium-based-ionic-covalent-organic-nanosheets-icons-002744nas a2200433 4500008004100000022001400041245012800055210006900183260000800252300001200260490000900272520135800281653001901639653000601658653000601664653001901670653002501689653001401714653001901728653002801747653002301775653002301798653002401821653002801845653002501873653003101898653001301929653002801942653002001970653002901990653002102019653002202040100002302062700003002085700002402115700002002139700002002159856013102179 2017 eng d a0022-286000aSynthesis, characterization and electrochemical investigations of mixed-ligand copper(II)-organic supramolecular frameworks0 aSynthesis characterization and electrochemical investigations of cNOV a549-5570 v11473 a

Two mixed-ligand copper(II)-organic coordination compounds with 5,5'-dimethyl-2,2'-bipyridine (5,5'-Me(2)bpy) as a primary ligand while aliphatic malonate (Hmal) and aromatic 2-hydroxynicotinate (2-OHNA) as secondary ligands, were synthesized. These complexes are formulated as: [Cu(Hmal)(5,5'-Me(2)bPY)(H2O)](ClO4) 1 and [Cu-2(2-OHNA)(2)(5,5'-Me(2)bpy)(2)(NO3)KNO3) 2. These two complexes were structurally characterized by single crystal X-ray diffraction analysis. Characterization was further supported by powder X-ray diffraction analysis, elemental analyses, FT-IR, FAB-MASS and TGA, DSC studies. Cyclic voltammetric and UV-visible spectral studies of these two complexes have also been done. The electrochemical studies of complex 1 in DMSO and DMF have shown that this complex undergoes quasi reversible diffusion-controlled one-electron transfer reaction without any chemical complication while complex 2 in DMSO undergoes quasi-reversible diffusion-controlled one electron transfer reaction, following EC mechanism. The electrochemical behaviour of complex 2 in DMF is complicated probably due to presence of more than one species in solution phase. (C) 2017 Elsevier B.V. All rights reserved.

10a2 '-bipyridine10a310a510a5 '-dimethyl-210a5-Tricarboxylic acid10aBenzene-110aclassification10aCo-ordination-Compounds10aCrystal-structures10acyclic voltammetry10amagnetic properties10ametal organic framework10aMixed-ligand complex10api-pi stacking interaction10aPolymers10aSecondery Building Unit10aStructural data10aSupramolecular framework10aTernare Komplexe10aX-ray diffraction1 aSingh, Sandeep, K.1 aSrivastava, Ashish, Kumar1 aSrivastava, Krishna1 aBanerjee, Rahul1 aPrasad, Jagdish uhttps://library.ncl.res.in/content/synthesis-characterization-and-electrochemical-investigations-mixed-ligand-copperii-organic02245nas a2200205 4500008004100000245010700041210006900148260000800217300001400225490000800239520152600247100001901773700002801792700001701820700002401837700001601861700002201877700002001899856012001919 2017 eng d00aTargeted drug delivery in covalent organic nanosheets (CONs) via sequential postsynthetic modification0 aTargeted drug delivery in covalent organic nanosheets CONs via s cMAR a4513-45200 v1393 aCovalent organic nanosheets (CONs) have emerged as a new class of functional two-dimensional (2D) porous organic polymeric materials with a high accessible surface, diverse functionality, and chemical stability. They could become versatile candidates for targeted drug delivery. Despite their many advantages, there are limitations to their use for target specific drug delivery. We anticipated that these drawbacks could be overturned by judicious postsynthetic modification steps to use CONs for targeted drug delivery. The postsynthetic modification would not only produce the desired functionality, it would also help to exfoliate to CONs as well. In order to meet this requirement, we have developed a facile, salt-mediated synthesis of covalent organic frameworks (COFs) in the presence of p-toluenesulfonic acid (PTSA). The COFs were subjected to sequential postsynthetic modifications to yield functionalized targeted CONs for targeted delivery of 5-fluorouracil to breast cancer cells. This postsynthetic modification resulted in simultaneous chemical delamination and functionalization to targeted CONs. Targeted CONs showed sustained release of the drug to the cancer cells through receptor mediated endocytosis, which led to cancer cell death via apoptosis. Considering the easy and facile COF synthesis, functionality based postsynthetic modifications, and chemical delamination to CONs for potential advantageous targeted drug delivery, this process can have a significant impact in biomedical applications.1 aMitra, Shouvik1 aSasmal, Himadri, Sekhar1 aKundu, Tanay1 aKandambeth, Sharath1 aMath, Kavya1 aDiaz, David, Diaz1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/targeted-drug-delivery-covalent-organic-nanosheets-cons-sequential-postsynthetic02283nas a2200229 4500008004100000245009200041210006900133260000800202300001600210490000700226520149400233100002201727700002701749700001901776700002401795700002101819700002101840700002401861700002401885700002001909856012401929 2018 eng d00aConvergent covalent organic framework thin sheets as flexible supercapacitor electrodes0 aConvergent covalent organic framework thin sheets as flexible su cAUG a28139-281460 v103 aFlexible supercapacitors in modern electronic equipment require light-weight electrodes, which have a high surface area, precisely integrated redox moieties, and mechanically strong flexible free-standing nature. However, the incorporation of the aforementioned properties into a single electrode remains a great task. Herein, we could overcome these challenges by a facile and scalable synthesis of the convergent covalent organic framework (COF) free-standing flexible thin sheets through solid-state molecular baking strategy. Here, redox-active anthraquinone (Dq) and pi-electron-rich anthracene (Da) are judiciously selected as two different linkers in a beta-ketoenamine-linked two-dimensional (2D) COF. As a result of precisely integrated anthraquinone moieties, COF thin sheet exhibits redox activity. Meanwhile, pi-electron-rich anthracene linker assists to improve the mechanical property of the free-standing thin sheet through the enhancement of noncovalent interaction between crystallites. This binder-free strategy offers the togetherness of crystallinity and flexibility in 2D COF thin sheets. Also, the synthesized porous crystalline convergent COF thin sheets are benefited with crack-free uniform surface and light-weight nature. Further, to demonstrate the practical utility of the material as an electrode in energy-storage systems, we fabricated a solid-state symmetrical flexible COF supercapacitor device using a GRAFOIL peeled carbon tape as the current collector.1 aKhayum, Abdul, M.1 aVijayakumar, Vidyanand1 aKarak, Suvendu1 aKandambeth, Sharath1 aBhadra, Mohitosh1 aSuresh, Karthika1 aAcharambath, Nikhil1 aKurungot, Sreekumar1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/convergent-covalent-organic-framework-thin-sheets-flexible-supercapacitor-electrodes01783nas a2200229 4500008004100000245009500041210006900136260000800205300001700213490000800230520100100238100001801239700001701257700002201274700001701296700002201313700002801335700001901363700002401382700002001406856012701426 2018 eng d00aInterlayer hydrogen-bonded covalent organic frameworks as high-performance supercapacitors0 aInterlayer hydrogenbonded covalent organic frameworks as highper cSEP a 10941-109450 v1403 aCovalent organic frameworks (COFs) have emerged as promising electrode materials in supercapacitors (SCs). However, their insoluble powder-like nature, poor capacitive performance in pristine form, integrated with inferior electrochemical stability is a primary concern for their long-term use in electrochemical devices. Keeping this in perspective, herein we report a redox active and hydrogen bonded COF with ultrahigh stability in conc. H2SO4 (18 M), conc. HCl (12 M) and NaOH (9 M). The as-synthesized COF fabricated as thin sheets were efficiently employed as a free-standing supercapacitor electrode material using 3 M aq. H2SO4 as an electrolyte. Moreover, the pristine COF sheet showcased outstanding areal capacitance 1600 mF cm(-2) (gravimetric 169 F g(-1)) and excellent cyclic stability (>100 000) without compromising its capacitive performance or Coulombic efficiency. Moreover, as a proof-of-concept, a solid-state supercapacitor device was also assembled and subsequently tested.1 aHalder, Arjun1 aGhosh, Meena1 aKhayum, Abdul, M.1 aBera, Saibal1 aAddicoat, Matthew1 aSasmal, Himadri, Sekhar1 aKarak, Suvendu1 aKurungot, Sreekumar1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/interlayer-hydrogen-bonded-covalent-organic-frameworks-high-performance-supercapacitors02071nas a2200217 4500008004100000022001400041245013800055210006900193260000800262300001400270490000700284520129100291100001701582700002201599700001901621700001801640700002801658700002001686700002001706856012701726 2018 eng d a0897-475600aMultistimuli-responsive interconvertible low-molecular weight metallohydrogels and the in situ entrapment of CdS quantum dots therein0 aMultistimuliresponsive interconvertible lowmolecular weight meta cJUL a4755-47610 v303 a

Two low molecular weight metallohydrogels (ZALA and CALA) have been synthesized from an amino-acid based ligand precursor (LA) and two different metal salts [zinc acetate dihydrate (ZA) and cadmium acetate dihydrate (CA), respectively. These two hydrogels show a unique chemically stimulated interconversion to each other via a reversible gel-sol gel pathway. This programmable gel-sol reversible system satisfies logic operations of a basic Boolean logic (INHIBIT) gate. Also, these hydrogels can be degraded into different MOF phases at room temperature spontaneously or in the presence of chloride and bromide salts (NaCl and NaBr.). CdS quantum dots can be grown inside the CALA gel matrix (CdS@CALA) in the presence of small amount of Na2S. This CdS doped gel exhibits time dependent tunable emission (white to yellow to orange) as a consequence of a slow agglomeration process of the entrapped quantum dots inside the gel matrix. This luminescence property also reflects the corresponding gel derived MOFs (obtained either by self-degradation of CdS@CALA or via anion induction) as well. This, to the best of our knowledge, is probably the simplest way to make a CdS quantum dot based composite material where CdS is entrapped within the gel and the gel-derived MOF matrix.

1 aBera, Saibal1 aChakraborty, Amit1 aKarak, Suvendu1 aHalder, Arjun1 aChatterjee, Soumyajyoti1 aSaha, Subhadeep1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/multistimuli-responsive-interconvertible-low-molecular-weight-metallohydrogels-and-situ02353nas a2200169 4500008004100000245008000041210006900121260000800190300001400198490000800212520177300220100001901993700001802012700002102030700002002051856011202071 2018 eng d00aPorosity prediction through hydrogen bonding in covalent organic frameworks0 aPorosity prediction through hydrogen bonding in covalent organic cAPR a5138-51450 v1403 aEasy and bulk-scale syntheses of two-dimensional (2D) covalent organic frameworks (COFs) represent an enduring challenge in material science. Concomitantly, the most critical aspect is to precisely control the porosity and crystallinity of these robust structures. Disparate complementary approaches such as solvothermal synthesis have emerged recently and are fueled in part by the usage of different modulators and acids that have enriched the COF library. Yet, the fundamental understanding of the integral processes of 2D COF assembly, induding their growth from nucleating sites and the origin of periodicity, is an intriguing chemical question that needs to be answered. To address these cardinal questions, a green and easy-to-perform approach of COF formation has been delineated involving acid-diamine salt precursors. The role of hydrogen bonding [d(av)(N-amine-H center dot center dot center dot O-acid); d(av) signifies the average N-amine-H center dot center dot center dot O-acid distances, i.e., the average distance from the H atom of the amine to the O atom of the acid] present in the acid-diamine salts in improving the COFs' crystallinity and porosity has further been decoded by thorough crystallographic analyses of the salt molecules. What is particularly noteworthy is that we have established the hydrogen-bonding distances d(av)(N-amine-H center dot center dot center dot O-acid) in the acid-diamine salts that are pivotal in maintaining the reversibility of the reaction, which mainly facilitates highly crystalline and porous COF formation. Moreover, this reactant-structure to the product-quality relationship has further been utilized for the synthesis of highly crystalline and porous COFs that are unattainable by other synthetic means.1 aKarak, Suvendu1 aKumar, Sushil1 aPachfule, Pradip1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/porosity-prediction-through-hydrogen-bonding-covalent-organic-frameworks01779nas a2200205 4500008004100000245008700041210006900128260000800197300001600205490000700221520107100228100002001299700002801319700002201347700002401369700001901393700001801412700002401430856011901454 2018 eng d00aSuperprotonic conductivity in flexible porous covalent organic framework membranes0 aSuperprotonic conductivity in flexible porous covalent organic f cAUG a10894-108980 v573 a

Poor mechanical stability of the polymer electrolyte membranes (PEMs) remains one of the bottlenecks towards improving the performance of the proton exchange membrane (PEM) fuel cells. The present work proposes a unique way to utilize crystalline covalent organic frameworks (COFs) as a self‐standing, highly flexible membrane to further boost the mechanical stability of the material without compromising its innate structural characteristics. The as‐synthesized p‐toluene sulfonic acid loaded covalent organic framework membranes (COFMs) showing the highest proton conductivity amongst all crystalline porous organic polymeric materials reported till date, as high as 7.8 x 10‐2 S cm‐1, have been further tested under real PEM operating conditions to ascertain their practical utilization as proton exchange membranes. Attainment of 24 mW cm‐2 power density, which is the highest among COFs and MOFs, highlights the possibilityof using a COF membrane over the other state‐of‐the‐art crystalline porous polymeric materials reported to date.

1 aBanerjee, Rahul1 aSasmal, Himadri, Sekhar1 aHarshitha, B., A.1 aBhange, Siddheshwar1 aKarak, Suvendu1 aHalder, Arjun1 aKurungot, Sreekumar uhttps://library.ncl.res.in/content/superprotonic-conductivity-flexible-porous-covalent-organic-framework-membranes01864nas a2200265 4500008004100000022001400041245013100055210006900186260000900255300001400264490000700278520093200285653003101217653000801248653001901256653003801275653002501313100001701338700002301355700002501378700001801403700002001421700003101441856012601472 2018 eng d a1433-785100aSupramolecular reassembly of self-exfoliated ionic covalent organic nanosheets for label-free detection of double-stranded DNA0 aSupramolecular reassembly of selfexfoliated ionic covalent organ cJUL  a8443-84470 v573 a

Ionic covalent organic nanosheets (iCONs), a member of the two-dimensional (2D) nanomaterials family, offer a unique functional platform for a wide range of applications. Herein, we explore the potential of an ethidium bromide (EB)-based covalent organic framework (EB-TFP) that self-exfoliates in water resulting in 2D ionic covalent organic nanosheets (EB-TFP-iCONs) for the selective detection of double-stranded DNA (dsDNA). In an aqueous medium, the self-exfoliated EB-TFP-iCONs reassemble in the presence of dsDNA resulting in hybrid EB-TFP-iCONs-DNA crystalline nanosheets with enhanced fluorescence at 600 nm. Detailed steady-state and time-resolved emission studies revealed that the reassembly phenomenon was highly selective for dsDNA when compared to single-stranded DNA (ssDNA), which allowed us to use the EB-TFP-iCONs as a 2D fluorescent platform for the label-free detection of complementary DNA strands.

10aCovalent organic framework10aDNA10aionic assembly10aionic covalent organic nanosheets10alabel-free detection1 aMal, Arindam1 aMishra, Rakesh, K.1 aPraveen, Vakayil, K.1 aKhayum, Abdul1 aBanerjee, Rahul1 aAjayaghosh, Ayyappanpillai uhttps://library.ncl.res.in/content/supramolecular-reassembly-self-exfoliated-ionic-covalent-organic-nanosheets-label-free01784nas a2200169 4500008004100000245009100041210006900132260000800201300001000209490000800219520117700227100002301404700002401427700002001451700002001471856012301491 2018 eng d00aSyntheses and single crystal X-ray diffraction analysis of five isostructural 2D MOCCs0 aSyntheses and single crystal Xray diffraction analysis of five i cJUN a49-540 v1473 aFive two-dimensional metal-organic coordination compounds (MOCCs) have been solvothermally synthesized by the combination of 2-aminonicotinic acid (ANA) and transition metal ions, viz. Co(II), Ni (II), Cu(Il), Zn(II) and Cd(II), in water-ethanol mixed solvent. They are formulated as [CoC6H5N2O2)(2)], (Co-ANA); [Ni(C6H5N2O2)(2)], (Ni-ANA) [Cu(C6H5N2O2)(2)], (Cu-ANA), [Zn(C6H5N2O2)(2)], (Zn-ANA) and [Cd(C6H5N2O2)(2)], (Cd-ANA). Single crystal X-ray diffraction studies for the complexes Co-ANA, Ni-ANA and Cd-ANA have also been carried out. These three complexes crystallize in the tetragonal crystal system with the space group P4(1)2(1)2. The metal ions in all these complexes have an octahedral coordination environment. The six coordinations are satisfied by two pyridine N-atoms from two different ANA ligands and four oxygen atoms from two chelating carboxylate groups of another two ANA ligands. The topological motif of the coordination network is defined as 2-periodic net or square lattice (sql). These complexes were further characterized by elemental, FT-IR spectral, thermal and powder X-ray diffraction analyses. (C) 2018 Elsevier Ltd. All rights reserved.1 aSingh, Sandeep, K.1 aSrivastava, Krishna1 aBanerjee, Rahul1 aPrasad, Jagdish uhttps://library.ncl.res.in/content/syntheses-and-single-crystal-x-ray-diffraction-analysis-five-isostructural-2d-moccs01641nas a2200253 4500008004100000022001200041245010400053210006900157260000900226300001400235490000700249520075600256653003101012653002501043653002401068653002901092653002401121100002301145700002601168700002101194700002001215700002201235856013001257 2018 eng d a149639500aTransforming covalent organic framework into thin-film composite membranes for hydrocarbon recovery0 aTransforming covalent organic framework into thinfilm composite  cAPR  a1752-17590 v533 aWe, for the first time, employed chemically stable covalent organic framework (COF) (TpPa-1) as a transport-active phase within the polymer (styrene-butadiene rubber; SBR) matrix to make TpPa-1@SBR thin-film composite (TFC) membranes. Three composite membranes, viz., TpPa-1(30)@SBR, TpPa-1(50)@SBR, and TpPa-1(70)@SBR have been prepared with varying COF content. These membranes were characterized for gas permeance and results were compared with the pristine SBR-based TFC membrane. The fully organic nature of chemically stable COF offered good compatibility with the host polymer matrix (SBR) and resulted into flexible TFC membranes even at 70% of COF loading; compared to the other porous material (MOFs or Inorganic fillers), it is appreciable.10aCovalent organic framework10ahydrocarbon recovery10apropylene–propane10astyrene-butadiene rubber10athin film composite1 aBiswal, Bishnu, P.1 aKunjattu, Shebeeb, H.1 aKaur, Taranpreet1 aBanerjee, Rahul1 aKharul, Ulhas, K. uhttps://library.ncl.res.in/content/transforming-covalent-organic-framework-thin-film-composite-membranes-hydrocarbon-recovery01713nas a2200229 4500008004100000245012500041210006900166260000800235300001400243490000700257520090400264100001801168700001901186700002201205700001701227700002201244700002601266700002101292700001801313700002001331856013201351 2018 eng d00aUltrastable imine-based covalent organic frameworks for sulfuric acid recovery: an effect of interlayer hydrogen bonding0 aUltrastable iminebased covalent organic frameworks for sulfuric  cMAY a5797-58020 v573 aA rapid and scalable synthesis of six new imine-linked highly porous and crystalline COFs is presented that feature exceptionally high chemical stability in harsh environments including conc. H2SO4 (18M), conc. HCl (12M), and NaOH (9M). This is because of the presence of strong interlayer C-H center dot center dot center dot N hydrogen bonding among the individual layers, which provides significant steric hindrance and a hydrophobic environment around the imine (-C=N-) bonds, thus preventing their hydrolysis in such an abrasive environment. These COFs were further converted into porous, crystalline, self-standing, and crack-free COF membranes (COFMs) with extremely high chemical stability for their potential applications for sulfuric acid recovery. The as-synthesized COFMs exhibit unprecedented permeance for acetonitrile (280 Lm(-2) h(-1) bar(-1)) and acetone (260 Lm(-2) h(-1) bar(-1)).1 aHalder, Arjun1 aKarak, Suvendu1 aAddicoat, Matthew1 aBera, Saibal1 aChakraborty, Amit1 aKunjattu, Shebeeb, H.1 aPachfule, Pradip1 aHeine, Thomas1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/ultrastable-imine-based-covalent-organic-frameworks-sulfuric-acid-recovery-effect-interlayer02090nas a2200253 4500008004100000022001400041245007200055210006800127260000900195300001000204490000800214520130100222653001901523653003101542653002801573653001001601100002601611700001801637700001901655700001901674700002001693700002201713856010101735 2018 eng d a0376-738800aZIF-8@DBzPBI-BuI composite membranes for olefin/paraffin separation0 aZIF8DBzPBIBuI composite membranes for olefinparaffin separation cMAR  a38-450 v5493 aZIF-8 is a member of Zeolitic Imidazole Framework family having high internal surface area, the high thermo-chemical stability and ease of synthesis gained immense attention for its highly selective sieving ability. Transforming it into a membrane form and practical utility remains a challenge. Any success towards this direction would radically reduce the cost of propylene/propane separation. Present study reports use of substituted polybenzimidazole (DBzPBI-BuI) for fabrication of flexible, thus scalable composite membranes with ZIF-8 (ZIF8@DBzPBI-BuI) possessing host-guest compatibility. The membrane with 30% ZIF-8 loading showed promising propylene-propane separation (ideal selectivity of 32.7), coupled with propylene permeability of 12.13 Barrer. Analysis of sorption shed light on the high contribution of diffusivity on governing permeation properties of the composite membranes. The mixed gas analysis offered highly encouraging results in comparison to known composite membranes of different polymers with ZIF-8. Placement of present data on `upper-bound' showed a rapid enhancement in selectivity by the addition of ZIF-8 in the polymer matrix, which seems to be a result of the elimination of inter-phase defects. It was made possible due to the functionality of host polymer.10aGas permeation10aOlefin/paraffin separation10aPolybenzimidazole (PBI)10aZIF-81 aKunjattu, Shebeeb, H.1 aAshok, Varsha1 aBhaskar, Anand1 aPandare, Kiran1 aBanerjee, Rahul1 aKharul, Ulhas, K. uhttps://library.ncl.res.in/content/zif-8dbzpbi-bui-composite-membranes-olefinparaffin-separation02052nas a2200157 4500008004100000245006600041210006300107260000800170300001400178490000800192520153700200100002401737700001701761700002001778856009601798 2019 eng d00a Covalent organic frameworks: chemistry beyond the structure 0 aCovalent organic frameworks chemistry beyond the structure cFEB a1807-18220 v1413 a

Covalent organic frameworks (COFs) represent a new field of rapidly growing chemical research that takes direct inspiration from diverse covalent bonds existing between atoms. The success of linking atoms in two and three dimensions to construct extended framework structures moved the chemistry of COFs beyond the structures to methodologies, highlighting the possibility of prospective applications. Although structure to property relation in COFs has led to fascinating properties, chemical stability, processability and scalability were some of the important challenges that needed to be overcome for their successful implementation. In this Perspective, we take a closer look at the growth of COFs from mere supramolecular structures to potential industrializable materials.

1 aKandambeth, Sharath1 aDey, Kaushik1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/covalent-organic-frameworks-chemistry-beyond-structure-002545nas a2200229 4500008004100000022001400041245013500055210006900190260000900259300001000268490000800278520171400286100002802000700001802028700002202046700001702068700001902085700003202104700003202136700002002168856012702188 2019 eng d a0002-786300aCovalent self-assembly in two dimensions: connecting covalent organic framework nanospheres into crystalline and porous thin films0 aCovalent selfassembly in two dimensions connecting covalent orga cDEC  a203790 v1413 a

Insolubility of covalent organic frameworks (COFs) in organic solvents is one of the major obstacles for the potential application of these extended networks such as drug delivery, sensing, optoelectronics, and semiconductor device fabrication. The present work proposes a unique way to make uniform, solution-processable, crystalline, and porous COF nanospheres directly from the homogeneous solution of amine and aldehyde via spatial and temporal control of the nucleation and growth. This strategy of direct nucleation simultaneously showcases the caliber to tune the size of the COF nanospheres from 25 to 570 nm. We have also demonstrated the concept of mesoscale covalent self-assembly of those solution-processable COF nanospheres in the liquid-liquid interface (DCM-water bilayer) for the very first time, transmuting them into self-standing COF thin films with long-range ordered arrangements in two dimensions. The crystalline and porous (with TpAzo showing highest S-BET of 1932 m(2) g(-1)) free-standing COF thin films could be fabricated in a wide range of thicknesses from as low as 21 nm to as high as 630 nm. Both beta-ketoenamine (TpAzo, TpDPP) and imine (TpOMeAzo, TpOMeDPP) linked COF thin films have been synthesized via mesoscale covalent self-assembly of the solution-processable COF nanospheres illustrating the generality of this eloquent methodology. Further, the solution processability has been tested and utilized to cast COF thin films uniformly in the inner and outer surface of an alumina hollow fiber membrane. The COF thin film-alumina hollow fiber membrane composites have showcased promising selective molecular separation of He and O-2, He and CO2, and He and N-2.

1 aSasmal, Himadri, Sekhar1 aHalder, Arjun1 aKunjattu, Shebeeb1 aDey, Kaushik1 aNadol, Athulya1 aAjithkumar, Thalasseril, G.1 aBedadur, Prachiti, Ravindra1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/covalent-self-assembly-two-dimensions-connecting-covalent-organic-framework-nanospheres02493nas a2200217 4500008004100000022001400041245014700055210006900202260000900271300001400280490000800294520171100302100001902013700001702032700001702049700001802066700001702084700002702101700002002128856012702148 2019 eng d a0002-786300aInducing disorder in order: hierarchically porous covalent organic framework nanostructures for rapid removal of persistent organic pollutants0 aInducing disorder in order hierarchically porous covalent organi cMAY  a7572-75810 v1413 a

The key factor responsible for fast diffusion and mass transfer through a porous material is the availability of a widely open pore interior having complete accessibility from their surface. However, because of their highly stacked nature, ordered two-dimensional (2D) materials fail to find real-world applicability, as it is difficult to take advantage of their complete structure, especially the inner cores. In this regard, three-dimensional (3D) nanostructures constructed from layered two-dimensional crystallites could prove to be advantageous. However, the real challenge is to cultivate a porous nanostructure with ordered pores where the pores are surrounded by crystalline walls. Herein, a simple yet versatile in situ gas-phase foaming technique has been employed to address these cardinal issues. The use of baking soda leads to the continuous effervescence of CO2 during the crystallization of foam, which creates ripples and fluctuations on the surface of the 2D crystallites. The induction of ordered micropores within the disordered 3D architecture synergistically renders fast diffusion of various guests through the interconnected pore network. The high-density defects in the hierarchically porous structure help in ultrafast adsorption (<10 s) of various pollutants (removal efficiency of 99%) from water, all of which would lead to significant environmental benefit. The pseudo-second-order rate constant for the BPA pollutant is 182.3 g mg(-1) min(-1), which is the highest among all the literature reports to date. The high removal efficiency (highest efficiency of 94% and average efficiency of 70%) of a persistent organic pollutant has been attended for the first time.

1 aKarak, Suvendu1 aDey, Kaushik1 aTorris, Arun1 aHalder, Arjun1 aBera, Saibal1 aKanheerampockil, Fayis1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/inducing-disorder-order-hierarchically-porous-covalent-organic-framework-nanostructures02417nas a2200289 4500008004100000022001400041245009500055210006900150260000800219300001400227490000700241520151000248653002301758653001501781653001801796653001701814653002301831100001701854700001701871700001901888700001801907700001901925700001901944700002201963700002001985856012202005 2019 eng d a1433-785100aPorosity switching in polymorphic porous organic cages with exceptional chemical stability0 aPorosity switching in polymorphic porous organic cages with exce cMAR a4243-42470 v583 a

Porous solids that can be switched between different forms with distinct physical properties are appealing candidates for separation, catalysis, and host-guest chemistry. In this regard, porous organic cages (POCs) are of profound interest because of their solution-state accessibility. However, the application of POCs is limited by poor chemical stability. Synthesis of an exceptionally stable imine-linked (4+6) porous organic cage (TpOMe-CDA) is reported using 2,4,6-trimethoxy-1,3,5-triformyl benzene (TpOMe) as a precursor aldehyde. Introduction of the -OMe functional group to the aldehyde creates significant steric and hydrophobic characteristics in the environment around the imine bonds that protects the cage molecules from hydrolysis in the presence of acids or bases. The electronic effect of the -OMe group also plays an important role in enhancing the stability of the reported POCs. As a consequence, TpOMe-CDA reveals exceptional chemical stability in neutral, acidic and basic conditions, even in 12m NaOH. Interestingly, TpOMe-CDA exists in three different porous and non-porous polymorphic forms (, , and ) with respect to differences in crystallographic packing and the orientation of the flexible methoxy groups. All of the polymorphs retain their crystallinity even after treatment with acids and bases. All the polymorphs of TpOMe-CDA differ significantly in their properties as well as morphology and could be reversibly switched in the presence of an external stimulus.

10achemical stability10aMorphology10aorganic cages10apolymorphism10aporosity switching1 aBera, Saibal1 aDey, Kaushik1 aPal, Tapan, K.1 aHalder, Arjun1 aTothadi, Srinu1 aKarak, Suvendu1 aAddicoat, Matthew1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/porosity-switching-polymorphic-porous-organic-cages-exceptional-chemical-stability01493nas a2200205 4500008004100000022001400041245011700055210006900172260000900241300001400250490000800264520075900272100002101031700002401052700002101076700002201097700002501119700002001144856012301164 2019 eng d a0002-786300aTriazine functionalized porous covalent organic framework for photo-organocatalytic E-Z isomerization of olefins0 aTriazine functionalized porous covalent organic framework for ph cAPR  a6152-61560 v1413 a

Visible light-mediated photocatalytic organic transformation has drawn significant attention as an alternative process for replacing thermal reactions. Although precious metal/organic dyes based homogeneous photocatalysts have been developed, their toxic and nonreusable nature makes them inappropriate for large-scale production. Therefore, we have synthesized a triazine and a keto functionalized nonmetal based covalent organic framework (TpTt) for heterogeneous photo catalysis. As the catalyst shows significant absorption of visible light, it has been applied for the photocatalytic uphill conversion of trans-stilbene to cis-stilbene in the presence of blue light-emitting diodes with broad substrate scope via an energy transfer process.

1 aBhadra, Mohitosh1 aKandambeth, Sharath1 aSahoo, Manoj, K.1 aAddicoat, Matthew1 aBalaraman, Ekambaram1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/triazine-functionalized-porous-covalent-organic-framework-photo-organocatalytic-e-z06517nas a2200205 4500008004100000245012300041210006900164260000800233490000700241520576600248100002806014700002706042700001806069700001706087700002206104700001906126700002406145700002006169856012206189 2019 eng d00aWeak intermolecular interactions in covalent organic framework-carbon nanofiber based crystalline yet flexible devices0 aWeak intermolecular interactions in covalent organic frameworkca cAUG0 v113 a

The redox-active and porous structural backbone of covalent organic frameworks (COFs) can facilitate high-performance electrochemical energy storage devices. However, the utilities of such 2D materials as supercapacitor electrodes in advanced self-charging power-pack systems have been obstructed due to the poor electrical conductivity and subsequent indigent performance. Herein, we report an effective strategy to enhance the electrical conductivity of COF thin sheets through the in situ solid-state inclusion of carbon nanofibers (CNF) into the COF precursor matrix. The obtained COF-CNF hybrids possess a significant intermolecular π···π interaction between COF and the graphene layers of the CNF. As a result, these COF-CNF hybrids (DqTp-CNF and DqDaTp-CNF) exhibit good electrical conductivity (0.25 × 10–3 S cm–1), as well as high performance in electrochemical energy storage (DqTp-CNF: 464 mF cm–2 at 0.25 mA cm–2). Also, the fabricated, mechanically strong quasi-solid-state supercapacitor (DqDaTp-CNF SC) delivered an ultrahigh device capacitance of 167 mF cm–2 at 0.5 mA cm–2. Furthermore, we integrated a monolithic photovoltaic self-charging power pack by assembling DqDaTp-CNF SC with a perovskite solar cell. The fabricated self-charging power pack delivered excellent performance in the areal capacitance (42 mF cm–2) at 0.25 mA cm–2 after photocharging for 300 s.

1 aMohammed, Abdul, Khayum1 aVijayakumar, Vidyanand1 aHalder, Arjun1 aGhosh, Meena1 aAddicoat, Matthew1 aBansode, Umesh1 aKurungot, Sreekumar1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/weak-intermolecular-interactions-covalent-organic-framework-carbon-nanofiber-based06784nas a2200205 4500008004100000245010500041210006900146260000800215520603400223100002806257700001706285700002706302700001806329700002006347700001806367700002206385700002406407700002006431856012706451 2019 eng d00aZinc ion interactions in a two-dimensional covalent organic framework based aqueous zinc ion battery0 aZinc ion interactions in a twodimensional covalent organic frame cAUG3 a

The two-dimensional structural features of covalent organic frameworks (COFs) can promote the electrochemical storage of cations like H+, Li+, and Na+ through both faradaic and non-faradaic processes. However, the electrochemical storage of cations like Zn2+ ion is still unexplored although it bears a promising divalent charge. Herein, for the first time, we have utilized hydroquinone linked β-ketoenamine COF acting as a Zn2+ anchor in an aqueous rechargeable zinc ion battery. The charge-storage mechanism comprises of an efficient reversible interlayer interaction of Zn2+ ions with the functional moieties in the adjacent layers of COF (−182.0 kcal mol−1). Notably, due to the well-defined nanopores and structural organization, a constructed full cell, displays a discharge capacity as high as 276 mA h g−1 at a current rate of 125 mA g−1.

1 aMohammed, Abdul, Khayum1 aGhosh, Meena1 aVijayakumar, Vidyanand1 aHalder, Arjun1 aNurhuda, Maryam1 aKumar, Sushil1 aAddicoat, Matthew1 aKurungot, Sreekumar1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/zinc-ion-interactions-two-dimensional-covalent-organic-framework-based-aqueous-zinc-ion02436nas a2200241 4500008004100000022001400041245015800055210006900213260000900282300001400291490000800305520154300313100002801856700002301884700002701907700001901934700001801953700002201971700002201993700003202015700002002047856012702067 2020 eng d a0002-786300aConnecting microscopic structures, mesoscale assemblies, and macroscopic architectures in 3D-printed hierarchical porous covalent organic framework foams0 aConnecting microscopic structures mesoscale assemblies and macro cMAY  a8252-82610 v1423 a

The induction of macro and mesopores into two-dimensional porous covalent organic frameworks (COFs) could enhance the exposure of the intrinsic micropores toward the pollutant environment, thereby, improving the performance. However, the challenge is to build a continuous hierarchically porous macro-architecture of crystalline organic materials in the bulk scale. In this regard, we have strategized a novel synthetic method to create hierarchically porous COF foams consisting of ordered micropores (2-2.2 nm) and disordered meso and macropores (50 nm to 200 mu m) as well as ordered macropores (1.5 mm to 2 cm). Herein, graphene oxide was used for creating disordered macro and mesopores in COF-GO foams. Considering the rheological features of the precursor hydrogel, we could integrate crystalline and porous COF-GO foams into self-supported three-dimensional (3D)-printed objects with the desired shapes and sizes. Therefore, we have engineered the 3D macro-architecture of COF-GO foams into complex geometries keeping their structural order and continuous porosity intact over a range of more than a million (10(-9) m to 10(-3) m). The interconnected 3D openings in these COF-GO foams further enhance the rapid and efficient uptake of organic and inorganic pollutants from water (>95% removal within 30 s). The abundant distribution of interconnected macroporous volume (55%) throughout the COF-GO foam matrix enhances the flow of water (1.13 x 10(-3) m.s(-1)) which results in efficient mass transport and adsorption.

1 aMohammed, Abdul, Khayum1 aUsgaonkar, Saurabh1 aKanheerampockil, Fayis1 aKarak, Suvendu1 aHalder, Arjun1 aTharkar, Minakshi1 aAddicoat, Matthew1 aAjithkumar, Thalasseril, G.1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/connecting-microscopic-structures-mesoscale-assemblies-and-macroscopic-architectures-3d01808nas a2200253 4500008004100000022001400041245008800055210006900143260000900212300001600221490000700237520096600244653001901210653002501229653003801254653002601292653001801318100001901336700002001355700001701375700002201392700002001414856012001434 2020 eng d a1944-824400aMorphological evolution of two-dimensional porous hexagonal trimesic acid framework0 aMorphological evolution of twodimensional porous hexagonal trime cAPR  a15588-155940 v123 a

Hexagonal single crystal structure (Form II) of trimesic acid (TMA) has been isolated by dissolving the interpenetrated Form I of TMA in tetrahydrofuran. Form II (hexagonal) was converted to Form I (interpenetrated) at room temperature through some intermediate structures. A detailed time-dependent FESEM study shows that the external morphology of Form II (hexagonal) is a hollow hexagonal tube that mimics its crystal structure. The block-shaped (morphology) of Form I (interpenetrated) was converted to the hollow hexagonal tube through some intermediate morphologies which are corresponding to particular crystal structures. Here, we have established a strong correlation between crystal structures with the morphology. These hollow tubes have been employed for Rhodamine B dye adsorption studies and showed an uptake of 82%, much more significant than Form I (interpenetrated) (39%) due to the presence of a pore channel in the crystal structure.

10adye adsorption10ahollow hexagonal rod10ahydrogen-bonded organic framework10amorphology evaluation10atrimesic acid1 aTothadi, Srinu1 aKoner, Kalipada1 aDey, Kaushik1 aAddicoat, Matthew1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/morphological-evolution-two-dimensional-porous-hexagonal-trimesic-acid-framework01827nas a2200241 4500008004100000022001400041245009800055210006900153260000800222300001400230490000700244520101400251653003201265653001001297653001501307653001801322653003001340100001701370700002601387700002501413700002001438856012701458 2020 eng d a1433-785100aNanoparticle size-fractionation through self-standing porous covalent organic framework films0 aNanoparticle sizefractionation through selfstanding porous coval cJAN a1161-11650 v593 a

Covalent organic frameworks (COFs) have attracted attention due to their ordered pores leading to important industrial applications like storage and separation. Combined with their modular synthesis and pore engineering, COFs could become ideal candidates for nanoseparations. However, the fabrication of these microcrystalline powders as continuous, crack-free, robust films remains a challenge. Herein, we report a simple, slow annealing strategy to construct centimeter-scale COF films (Tp-Azo and Tp-TTA) with micrometer thickness. The as-synthesized films are porous (SA(BET)=2033 m(2) g(-1) for Tp-Azo) and chemically stable. These COFs have distinct size cut-offs (ca. 2.7 and ca. 1.6 nm for Tp-Azo and Tp-TTA, respectively), which allow the size-selective separation of gold nanoparticles. Unlike, other conventional membranes, the durable structure of the COF films allow for excellent recyclability (up to 4 consecutive cycles) and easy recovery of the gold nanoparticles from the solution.

10acovalent organic frameworks10afilms10ananofilter10aNanoparticles10asize-selective separation1 aDey, Kaushik1 aKunjattu, Shebeeb, H.1 aChahande, Anurag, M.1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/nanoparticle-size-fractionation-through-self-standing-porous-covalent-organic-framework02546nas a2200289 4500008004100000022001400041245011400055210006900169260000900238300001400247490000700261520158800268653001701856653002201873653001301895653002601908653002401934653002001958100001901978700001801997700002502015700001902040700001602059700002002075700003102095856013002126 2020 eng d a1861-472800aTriazine-based organic polymer-catalysed conversion of epoxide to cyclic carbonate under ambient CO2 pressure0 aTriazinebased organic polymercatalysed conversion of epoxide to  cJUN  a1683-16870 v153 a

In this work we have achieved epoxide to cyclic carbonate conversion using a metal-free polymeric catalyst under ambient CO2 pressure (1.02 atm) using a balloon setup. The triazine containing polymer (CYA-ANIS) was prepared from cyanuric chloride (CYA-Cl) and o-dianisidine (ANIS) in anhydrous DMF as solvent by refluxing under the N-2 gas environment. The presence of triazine and amine functional groups in the polymer results in the adsorption of CO2 up to 7 cc/g at 273 K. This inspired us to utilize the polymer for the conversion of a series of functionalised epoxides into their corresponding cyclic carbonates in the presence of tetrabutyl ammonium iodide (TBAI) as co-catalyst. The product has wide range of applications like solvent in lithium ion battery, precursor for polycarbonate, etc. The catalyst was efficient for the conversion of different mono and di-epoxides into their corresponding cyclic carbonates under atmospheric pressure in the presence of TBAI as co-catalyst. The study indicates that epoxide attached with electron withdrawing groups (like, CH2Cl, glycidyl ether, etc.) displayed better conversion compared to simple alkane chain attached epoxides. This is mainly due to the stabilization of electron rich intermediates produced during the reaction (e. g. epoxide ring opening or CO2 incorporation into the halo-alkoxide anion). This catalyst mixture was capable to maintain its reactivity up to five cycles without losing its activity. Post catalytic characterization clearly supports the heterogeneous and recyclable nature of the catalyst.

10aCO2 fixation10acyclic carbonates10aepoxides10aHeterogeneouscatalyst10ametal free catalyst10aTriazinepolymer1 aBiswas, Tanmoy1 aHalder, Arjun1 aPaliwal, Khusboo, S.1 aMitra, Antarip1 aTudu, Gouri1 aBanerjee, Rahul1 aMahalingam, Venkataramanan uhttps://library.ncl.res.in/content/triazine-based-organic-polymer-catalysed-conversion-epoxide-cyclic-carbonate-under-ambient02663nas a2200229 4500008004100000022001400041245013900055210006900194260000900263300001400272490000800286520184200294100002802136700001602164700001902180700002202199700002102221700001902242700002202261700002002283856013002303 2021 eng d a0002-786300aHeterogeneous C-H functionalization in water via porous covalent organic framework nanofilms: a case of catalytic sphere transmutation0 aHeterogeneous CH functionalization in water via porous covalent  cJUN  a8426-84360 v1433 aHeterogeneous catalysis in water has not been explored beyond certain advantages such as recyclability and recovery of the catalysts from the reaction medium. Moreover, poor yield, extremely low selectivity, and active catalytic site deactivation further underrate the heterogeneous catalysis in water. Considering these facts, we have designed and synthesized solution-dispersible porous covalent organic framework (COF) nanospheres. We have used their distinctive morphology and dispersibility to functionalize unactivated C-H bonds of alkanes heterogeneously with high catalytic yield (42-99%) and enhanced regioand stereoselectivity (3 degrees:2 degrees = 105:1 for adamantane). Further, the fabrication of catalyst-immobilized COF nanofilms via covalent self-assembly of catalytic COF nanospheres for the first time has become the key toward converting the catalytically inactive homogeneous catalysts into active and effective heterogeneous catalysts operating in water. This unique covalent self-assembly occurs through the protrusion of the fibers at the interface of two nanospheres, transmuting the catalytic spheres into films without any leaching of catalyst molecules. The catalyst-immobilized porous COF nanofilms' chemical functionality and hydrophobic environment stabilize the high-valent transient active oxoiron(V) intermediate in water and restricts the active catalytic site's deactivation. These COF nanofilms functionalize the unactivated C-H bonds in water with a high catalytic yield (45-99%) and with a high degree of selectivity (cis:trans = 155:1; 3 degrees:2 degrees = 257:1, for cis-1,2-dimethylcyclohexane). To establish this approach's ``practical implementation'', we conducted the catalysis inflow (TON = 424 +/- 5) using catalyst-immobilized COF nanofilms fabricated on a macroporous polymeric support.1 aSasmal, Himadri, Sekhar1 aBag, Saikat1 aChandra, Bittu1 aMajumder, Poulami1 aKuiry, Himangshu1 aKarak, Suvendu1 aGupta, Sayam, Sen1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/heterogeneous-c-h-functionalization-water-porous-covalent-organic-framework-nanofilms-case02471nas a2200229 4500008004100000022001400041245009400055210006900149260000800218300001200226490000800238520170800246100002001954700001701974700002001991700001902011700001602030700003202046700001702078700002002095856012602115 2022 eng d a0002-786300aDual nanomechanics in anisotropic porous covalent organic framework janus-type thin films0 aDual nanomechanics in anisotropic porous covalent organic framew cJAN a400-4090 v1443 a

Empowered by crystalline ordered structures and homogeneous fabrication techniques, covalent organic frameworks (COFs) have been realized with uniform morphologies and isotropic properties. However, such homogeneity often hinders various surface-dependent properties observed in asymmetric nanostructures. The challenge remains to induce heterogeneity in COFs by creating an asymmetric superstructure such as a Janus thin film. In this regard, we propose a versatile yet straightforward interfacial layer-grafting strategy to fabricate free-standing Janus-type COF-graphene thin films. Herein, two-dimensional graphene sheets were utilized as the suitable grafter due to the possibility of noncovalent interactions between the layers. The versatility of the approach was demonstrated by fabricating two distinct Janus-type films, with the COF surface interwoven with nanofibers and nanospheres. The Janus-type films showcase opposing surface morphologies originating from graphene sheets and COF nanofibers or nanospheres, preserving the porosity (552-600 m(2) g(-1)). The unique surface chemistries of the constituent layers further endow the films with orthogonal mechanical properties, as confirmed by the nanoindentation technique. Interestingly, the graphene sheets favor the Janus-type assembly of COF nanofibers over the nanospheres. This is reflected in the better nanomechanical properties of COFfiber-graphene films (E-gra(phene) = 300-1200 MPa; E-COF( )= 15-60 MPa) compared to the COFsphere-graphene films (E-gra(phe)ne = 11-14 MPa; E-CO(F )= 2-5 MPa). These results indicate a direct relationship between the mechanical properties and homo/heterogeneity of Janus-type COF films.

1 aMohata, Shibani1 aDey, Kaushik1 aBhunia, Surojit1 aThomas, Neethu1 aGowd, Bhoje1 aAjithkumar, Thalasseril, G.1 aReddy, Malla1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/dual-nanomechanics-anisotropic-porous-covalent-organic-framework-janus-type-thin-films01978nas a2200301 4500008004100000022001400041245007800055210006900133260000800202300000900210490000700219520105200226100002001278700001801298700002401316700001901340700001901359700001801378700002001396700001601416700002201432700001701454700001901471700003201490700002401522700002001546856011001566 2022 eng d a1755-433000aPorous covalent organic nanotubes and their assembly in loops and toroids0 aPorous covalent organic nanotubes and their assembly in loops an cMAY a507+0 v143 a

Carbon nanotubes, and synthetic organic nanotubes more generally, have in recent decades been widely explored for application in electronic devices, energy storage, catalysis and biosensors. Despite noteworthy progress made in the synthesis of nanotubular architectures with well-defined lengths and diameters, purely covalently bonded organic nanotubes have remained somewhat challenging to prepare. Here we report the synthesis of covalently bonded porous organic nanotubes (CONTs) by Schiff base reaction between a tetratopic amine-functionalized triptycene and a linear dialdehyde. The spatial orientation of the functional groups promotes the growth of the framework in one dimension, and the strong covalent bonds between carbon, nitrogen and oxygen impart the resulting CONTs with high thermal and chemical stability. Upon ultrasonication, the CONTs form intertwined structures that go on to coil and form toroidal superstructures. Computational studies give some insight into the effect of the solvent in this assembly process.

1 aKoner, Kalipada1 aKarak, Shayan1 aKandambeth, Sharath1 aKarak, Suvendu1 aThomas, Neethu1 aLeanza, Luigi1 aPerego, Claudio1 aPesce, Luca1 aCapelli, Riccardo1 aMoun, Monika1 aBhakar, Monika1 aAjithkumar, Thalasseril, G.1 aPavan, Giovanni, M.1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/porous-covalent-organic-nanotubes-and-their-assembly-loops-and-toroids01894nas a2200241 4500008004100000022001400041245007900055210006900134260000900203300001600212490000800228520112300236100002001359700001801379700002001397700002301417700002201440700002401462700001901486700001701505700002001522856011001542 2022 eng d a0002-786300aViscoelastic covalent organic nanotube fabric via macroscopic entanglement0 aViscoelastic covalent organic nanotube fabric via macroscopic en cSEP  a16052-160590 v1443 a

Covalent organic nanotubes (CONTs) are one-dimensional porous frameworks constructed from organic building blocks via dynamic covalent chemistry. CONTs are synthesized as insoluble powder that restricts their potential applications. The judicious selection of 2,2'-bipyridine-5,5'-dicarbaldehyde and tetraaminotriptycene as building blocks for TAT-BPy CONTs has led to constructing flexible yet robust and self-standing fabric up to 3 mu m thickness. The TAT-BPy CONTs and TAT-BPy CONT fabric have been characterized by solid-state one-dimensional (1D) C-13 CP-MAS, two-dimensional (2D) C-13-H-1 correlation NMR, 2D H-1-H-1 DQ-SQ NMR, and 2D N-14-H-1 correlation NMR spectroscopy. The mechanism of fabric formation has been established by using high-resolution transmission electron microscopy and scanning electron microscopy techniques. The as-synthesized viscoelastic TAT-BPy CONT fabric exhibits high mechanical strength with a reduced modulus (E-r) of 8 (+/- 3) GPa and hardness (H) of 0.6 (+/- 0.3) GPa. Interestingly, the viscoelastic fabric shows time-dependent elastic depth recovery up to 50-70%.

1 aKoner, Kalipada1 aDas, Susobhan1 aMohata, Shibani1 aDuong, Nghia, Tuan1 aNishiyama, Yusuke1 aKandambeth, Sharath1 aKarak, Suvendu1 aReddy, Malla1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/viscoelastic-covalent-organic-nanotube-fabric-macroscopic-entanglement02542nas a2200241 4500008004100000022001400041245008900055210006900144260000900213300001600222490000800238520175100246100002501997700001502022700001702037700001702054700001902071700001902090700003202109700001802141700002002159856012102179 2023 eng d a0002-786300aCovalent organic framework cladding on peptide-amphiphile-based biomimetic catalysts0 aCovalent organic framework cladding on peptideamphiphilebased bi cJUN  a12793-128010 v1453 a

Peptide-based biomimetic catalysts are promising materialsforefficient catalytic activity in various biochemical transformations.However, their lack of operational stability and fragile nature innon-aqueous media limit their practical applications. In this study,we have developed a cladding technique to stabilize biomimetic catalystswithin porous covalent organic framework (COF) scaffolds. This methodologyallows for the homogeneous distribution of peptide nanotubes insidethe COF (TpAzo and TpDPP) backbone, creating strong noncovalent interactionsthat prevent leaching. We synthesized two different peptide-amphiphiles,C10FFVK and C10FFVR, with lysine (K) and arginine(R) at the C-termini, respectively, which formed nanotubular morphologies.The C10FFVK peptide-amphiphile nanotubes exhibit enzyme-likebehavior and efficiently catalyze C-C bond cleavage in a buffermedium (pH 7.5). We produced nanotubular structures of TpAzo-C10FFVK and TpDPP-C10FFVK through COF claddingby using interfacial crystallization (IC). The peptide nanotubes encasedin the COF catalyze C-C bond cleavage in a buffer medium aswell as in different organic solvents (such as acetonitrile, acetone,and dichloromethane). The TpAzo-C10FFVK catalyst,being heterogeneous, is easily recoverable, enabling the reactionto be performed for multiple cycles. Additionally, the synthesis ofTpAzo-C10FFVK thin films facilitates catalysis inflow. As control, we synthesized another peptide-amphiphile, C10FFVR, which also forms tubular assemblies. By depositingTpAzo COF crystallites on C10FFVR nanotubes through IC,we produced TpAzo-C10FFVR nanotubular structuresthat expectedly did not show catalysis, suggesting the critical roleof the lysines in the TpAzo-C10FFVK.

1 aMahato, Ashok, Kumar1 aPal, Sumit1 aDey, Kaushik1 aReja, Antara1 aPaul, Satyadip1 aShelke, Ankita1 aAjithkumar, Thalasseril, G.1 aDas, Dibyendu1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/covalent-organic-framework-cladding-peptide-amphiphile-based-biomimetic-catalysts02903nas a2200325 4500008004100000022001400041245010100055210006900156260000800225300001400233490000800247520183600255100001602091700002802107700002802135700001702163700002102180700002202201700002002223700002002243700001902263700001902282700003302301700003202334700002502366700001802391700001702409700002002426856013102446 2023 eng d a0002-786300aCovalent organic framework thin-film photodetectors from solution-processable porous nanospheres0 aCovalent organic framework thinfilm photodetectors from solution cJAN a1649-16590 v1453 a

The synthesis of homogeneous covalent organic framework (COF) thin films on a desired substrate with decent crystallinity, porosity, and uniform thickness has great potential for optoelectronic applications. We have used a solution-processable sphere transmutation process to synthesize 300 +/- 20 nm uniform COF thin films on a 2 x 2 cm2 TiO2-coated fluorine-doped tin oxide (FTO) surface. This process controls the nucleation of COF crystallites and molecular morphology that helps the nanospheres to arrange periodically to form homogeneous COF thin films. We have synthesized four COF thin films (TpDPP, TpEtBt, TpTab, and TpTta) with different functional backbones. In a close agreement between the experiment and density functional theory, the TpEtBr COF film showed the lowest optical band gap (2.26 eV) and highest excited-state lifetime (8.52 ns) among all four COF films. Hence, the TpEtBr COF film can participate in efficient charge generation and separation. We constructed optoelectronic devices having a glass/FTO/TiO2/COF-film/Au architecture, which serves as a model system to study the optoelectronic charge transport properties of COF thin films under dark and illuminated conditions. Visible light with a calibrated intensity of 100 mW cm-2 was used for the excitation of COF thin films. All of the COF thin films exhibit significant photocurrent after illumination with visible light in comparison to the dark. Hence, all of the COF films behave as good photoactive substrates with minimal pinhole defects. The fabricated out-of-plane photodetector device based on the TpEtBr COF thin film exhibits high photocurrent density (2.65 +/- 0.24 mA cm-2 at 0.5 V) and hole mobility (8.15 +/- 0.64 x10-3 cm2 V-1 S-1) compared to other as synthesized films, indicating the best photoactive characteristics.

1 aBag, Saikat1 aSasmal, Himadri, Sekhar1 aChaudhary, Sonu, Pratap1 aDey, Kaushik1 aBlaette, Dominic1 aGuntermann, Roman1 aZhang, Yingying1 aPoloz, Miroslav1 aKuc, Agnieszka1 aShelke, Ankita1 aVijayaraghavan, Ratheesh, K.1 aAjithkumar, Thalasseril, G.1 aBhattacharyya, Sayan1 aHeine, Thomas1 aBein, Thomas1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/covalent-organic-framework-thin-film-photodetectors-solution-processable-porous-nanospheres02677nas a2200265 4500008004100000022001400041245008300055210006900138260000900207300001400216490000700230520184900237100001902086700001602105700001702121700002502138700001602163700001702179700001602196700001902212700002602231700002002257700002002277856011402297 2023 eng d a2041-652000aHierarchical covalent organic framework-foam for multi-enzyme tandem catalysis0 aHierarchical covalent organic frameworkfoam for multienzyme tand cJUN  a6643-66530 v143 a

Covalent organic frameworks (COFs) are ideal host matrices for biomolecule immobilization and biocatalysis due to their high porosity, various functionalities, and structural robustness. However, the porosity of COFs is limited to the micropore dimension, which restricts the immobilization of enzymes with large volumes and obstructs substrate flow during enzyme catalysis. A hierarchical 3D nanostructure possessing micro-, meso-, and macroporosity could be a beneficial host matrix for such enzyme catalysis. In this study, we employed an in situ CO2 gas effervescence technique to induce disordered macropores in the ordered 2D COF nanostructure, synthesizing hierarchical TpAzo COF-foam. The resulting TpAzo foam matrix facilitates the immobilization of multiple enzymes with higher immobilization efficiency (approximately 1.5 to 4-fold) than the COF. The immobilized cellulolytic enzymes, namely beta-glucosidase (BGL), cellobiohydrolase (CBH), and endoglucanase (EG), remain active inside the TpAzo foam. The immobilized BGL exhibited activity in organic solvents and stability at room temperature (25 degrees C). The enzyme-immobilized TpAzo foam exhibited significant activity towards the hydrolysis of p-nitrophenyl-beta-d-glucopyranoside (BGL@TpAzo-foam: K-m and V-max = 23.5 +/- 3.5 mM and 497.7 +/- 28.0 mu M min(-1)) and carboxymethylcellulose (CBH@TpAzo-foam: K-m and V-max = 18.3 +/- 4.0 mg mL(-1) and 85.2 +/- 9.6 mu M min(-1) and EG@TpAzo-foam: K-m and V-max = 13.2 +/- 2.0 mg mL(-1) and 102.2 +/- 7.1 mu M min(-1)). Subsequently, the multi-enzyme immobilized TpAzo foams were utilized to perform a one-pot tandem conversion from carboxymethylcellulose (CMC) to glucose with high recyclability (10 cycles). This work opens up the possibility of synthesizing enzymes immobilized in TpAzo foam for tandem catalysis.

1 aPaul, Satyadip1 aGupta, Mani1 aDey, Kaushik1 aMahato, Ashok, Kumar1 aBag, Saikat1 aTorris, Arun1 aGowd, Bhoje1 aSajid, Hasnain1 aAddicoat, Matthew, A.1 aDatta, Supratim1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/hierarchical-covalent-organic-framework-foam-multi-enzyme-tandem-catalysis02582nas a2200349 4500008004100000022001400041245016100055210006900216260000800285490000700293520135800300653003501658653002201693653003401715653002101749653002201770653001501792653002001807100001801827700002001845700001901865700002001884700002201904700002301926700001901949700004001968700002702008700002802035700001902063700002002082856013002102 2024 eng d a0935-964800aMorphology tuning via linker modulation: metal-free covalent organic nanostructures with exceptional chemical stability for electrocatalytic water splitting0 aMorphology tuning via linker modulation metalfree covalent organ cMAR0 v363 a

The development of synthetic routes for the formation of robust porous organic polymers (POPs) with well-defined nanoscale morphology is fundamentally significant for their practical applications. The thermodynamic characteristics that arise from reversible covalent bonding impart intrinsic chemical instability in the polymers, thereby impeding their overall potential. Herein, a unique strategy is reported to overcome the stability issue by designing robust imidazole-linked POPs via tandem reversible/irreversible bond formation. Incorporating inherent rigidity into the secondary building units leads to robust microporous polymeric nanostructures with hollow-spherical morphologies. An in-depth analysis by extensive solid-state NMR (1D and 2D) study on H-1, C-13, and N-14 nuclei elucidates the bonding and reveals the high purity of the newly designed imidazole-based POPs. The nitrogen-rich polymeric nanostructures are further used as metal-free electrocatalysts for water splitting. In particular, the rigid POPs show excellent catalytic activity toward the oxygen evolution reaction (OER) with long-term durability. Among them, the most efficient OER electrocatalyst (TAT-TFBE) requires 314 mV of overpotential to drive 10 mA cm(-2) current density, demonstrating its superiority over state-of-the-art catalysts (RuO2 and IrO2).

10abi-functional electrocatalysts10achemically robust10ahollow-spherical morphologies10aimidazole-linked10ainherent rigidity10ametal-free10awater splitting1 aKarak, Shayan1 aKoner, Kalipada1 aKarmakar, Arun1 aMohata, Shibani1 aNishiyama, Yusuke1 aDuong, Nghia, Tuan1 aThomas, Neethu1 aAjithkumar, Thalasseril, Govindanku1 aHossain, Munshi, Sahid1 aBandyopadhyay, Subhajit1 aKundu, Subrata1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/morphology-tuning-linker-modulation-metal-free-covalent-organic-nanostructures-exceptional