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-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-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-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-001643nas 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-transformation01697nas 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-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-networks02011nas 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-organic01779nas 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-moccs