02300nas 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-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-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-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-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-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-0