Metal-Organic Frameworks (MOFs) or porous Coordination Polymers (PCPs), Covalent Organic Frameworks (COFs), Porous Hydrogen-Bonded Organic Frameworks (HOFs) and Metalo Hydrogen-Bonded Organic Frameworks (MHOFs) are relatively new classes of porous crystalline materials with large surface areas and pore volumes attracting immense attention by their unique properties such as controllable open structural diversity, permanent porosity and functional tunability as well for their several potential applications such as gas storage and separation, sensor materials, proton conductivity, bio-medical applications, ion-exchange, catalysis and so on. While MOF structures are basically made up by the association of inorganic nodes which can either be single ions or clusters of ions and organic linkers possessing potential voids inside the frameworks, COFs are consisted of purely covalent linkage of organic moieties. On the other hand, HOFs are recently developed as another class of crystalline materials with tuneable and adjustable micropores with advantages in the simplicity of their synthesis and structural determination via single-crystal diffraction technique. In general, MHOFs are constructed from cationic metal complex and anionic moieties such as sulfonates or carboxylates through charge-assisted H-bonding interactions.
Our current interest focuses on designing these framework materials especially MOFs and COFs for their potential applications in energy media (such as H2, CH4, C2H2 gas storage, proton conducting membranes PEMs for H2 fuel cells), separation (such as CO2 capture and sequestration (CCS), hydrocarbon separation, industrially important gas separation and chiral/achiral molecule separation), catalysis (such as heterogeneous catalysis, asymmetric catalysis and photo-catalysis) and sensing (small molecules like metal ions and solvents) areas. We wish our research will lead to new developments in synthetic and structural design and provide useful direction for the future exploration of this fascinating and important domain of research.
The students will have a solid training in all aspects of crystallography. Generally, 1-3 steps organic synthesis of ligands/monomers are required followed by characterization with NMR, Mass, IR, EA, UV-Vis etc. MOFs /COFs are generally synthesized by hydro(solvothermal) techniques followed by characterization with single crystal (SC-XRD), powder X-ray diffraction (PXRD), TGA and SS-NMR. Surface area, porosity and gas sorption measurements are performed with a volumetric gas sorption analyzer. The proton conductivity measurements are carried out by AC impedance method with an Impedance/Gain-Phase Analyzer (Solartron SI 1260).
Metal-Organic Frameworks (MOFs)
Covalent-Organic Frameworks (COFs)
Porous Coordination Polymers (PCPs)
Hydrogen-Bonded Organic Framework (HOFs)
Metalo Hydrogen-Bonded Organic Frameworks (MHOFs)
CO2 Capture and Separation (CCS)
Small Molecule Sensing
Congratulation Rupam and Santanu for their recent publication in Chemistry-A European Journal.
Congratulation Santanu and Arun for their recent publication in Inorganic Chemistry.
Congratulation Shyam for his recent publication in J. Mater. Chem. A.
Congratulation Arun for his recent publication in Chemistry-A European Journal.