@article { ISI:000282871600015, title = {Selective CO2 and H-2 adsorption in a chiral magnesium-based metal organic framework (Mg-MOF) with open metal sites}, journal = {Journal of Materials Chemistry}, volume = {20}, number = {41}, year = {2010}, month = {SEP}, pages = {9073-9080}, publisher = {ROYAL SOC CHEMISTRY}, address = {THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND}, abstract = {

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.

}, issn = {0959-9428}, doi = {10.1039/c0jm01125h}, author = {Mallick, Arijit and Saha, Subhadeep and Pachfule, Pradip and Roy, Sudip and Banerjee, Rahul} } @article { ISI:000287175600029, title = {Structure and gas sorption behavior of a new three dimensional porous magnesium formate}, journal = {Inorganic Chemistry}, volume = {50}, number = {4}, year = {2011}, month = {FEB}, pages = {1392-1401}, publisher = {AMER CHEMICAL SOC}, address = {1155 16TH ST, NW, WASHINGTON, DC 20036 USA}, abstract = {

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.

}, issn = {0020-1669}, doi = {10.1021/ic102057p}, author = {Mallick, Arijit and Saha, Subhadeep and Pachfule, Pradip and Roy, Sudip and Banerjee, Rahul} } @article { ISI:000318917900005, title = {Salt metathesis in three dimensional metal-organic frameworks (MOFs) with unprecedented hydrolytic regenerability}, journal = {Chemical Communications}, volume = {49}, number = {46}, year = {2013}, month = {APR}, pages = {5262-5264}, publisher = {ROYAL SOC CHEMISTRY}, address = {THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND}, abstract = {

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

}, issn = {1359-7345}, doi = {10.1039/c3cc41842a}, author = {Kundu, Tanay and Sahoo, Subash Chandra and Saha, Subhadeep and Banerjee, Rahul} } @article { ISI:000375810400037, title = {Supramolecular metallogel that imparts self-healing properties to other gel networks}, journal = {Chemistry of Materials}, volume = {28}, number = {9}, year = {2016}, month = {MAY}, pages = {3210-3217}, publisher = {AMER CHEMICAL SOC}, address = {1155 16TH ST, NW, WASHINGTON, DC 20036 USA}, abstract = {

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.

}, issn = {0897-4756}, doi = {10.1021/acs.chemmater.6b01144}, author = {Feldner, Tobias and Haering, Marleen and Saha, Subhadeep and Esquena, Jordi and Banerjee, Rahul and Diaz, David Diaz} }