- Fuel Cells and Related Materials
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Conducting polymers and applications
- Electrocatalysts for Energy Conversion
- Metal-Organic Frameworks: Synthesis and Applications
- Membrane-based Ion Separation Techniques
- Advanced battery technologies research
- Carbon dioxide utilization in catalysis
- Lignin and Wood Chemistry
- biodegradable polymer synthesis and properties
- Membrane Separation and Gas Transport
- Carbon and Quantum Dots Applications
- Catalysis and Oxidation Reactions
- Nanocluster Synthesis and Applications
- Aluminum Alloy Microstructure Properties
- Organic and Molecular Conductors Research
- Advanced Battery Materials and Technologies
- Corrosion Behavior and Inhibition
- Aluminum Alloys Composites Properties
- Machine Learning in Materials Science
- Covalent Organic Framework Applications
- Advanced Battery Technologies Research
- Molecular Junctions and Nanostructures
- Catalytic Cross-Coupling Reactions
Indian Institute of Technology Kharagpur
2016-2024
Florida A&M University - Florida State University College of Engineering
2023-2024
National Institute of Technology Agartala
2020
Metal–organic frameworks (MOFs) are emerging as highly promising candidates for the next-generation proton conductors. Particularly, amine-containing well various acid-functionalized MOFs and coordination polymers have been explored. In anticipation of producing an alternate proton-conducting material with superior conductivity, both amine sulfonates were incorporated in a MOF (Cu-SAT). It exhibits high stability water, to dilute hydrochloric acid, remarkable conductivity 0.53 × 10–3 S cm–1...
Abstract Developing a robust metal‐organic framework (MOF) which facilitates proton hopping along the pore channels is very demanding in context of fabricating an efficient proton‐conducting membrane for fuel cells. Herein, we report synthesis novel tetradentate aromatic phosphonate ligand H 8 L (L=tetraphenylethylene tetraphosphonic acid) based Ni‐MOF, whose crystal structure has been solved from single‐crystal X‐ray diffraction. Ni‐MOF [Ni 2 (H 4 L)(H O) 9 (C 7 SO)(C NCO)] displays...
Polytriazoles are considered as an excellent high-performance polymer due to their outstanding set of properties. The current investigation reports the synthesis a phosphorus-containing fluorinated diazide monomer, that is, bis[4-(4′-azidophenoxy)-3-trifluoromethyl phenyl] phenylphosphine oxide (PFAZ) and utilization this compound synthesize trifluoromethyl groups phosphine containing sulfonated polytriazoles (PTPFBSH-XX). copolymers with different level sulfonation (-XX = −60, −70, −80,...
Abstract This work highlights the conversion method of chaining up greenhouse gas CO 2 with biomass lignin to develop new sustainable, recyclable polymers from abundant and non‐food based renewable resources. A cyclic carbonate monomer has synthesized using a cost‐effective, non‐phosgene‐based, greener approach under atmospheric pressure room temperature. The fully programable ring‐opening polymerization is accomplished by varying catalyst (DBU TBD), loading (0.5–5.0%) reaction time (2–40...
Abstract In this study, an innovative and cost‐effective ionic polymer for CO 2 capture utilization the first time, using abundant nonfood‐based biomass lignin is reported. The modified synthesizes through reaction of glycidyltrimethylammonium chloride with under alkaline conditions to yield quaternary ammonium functionality. Subsequently, hydroxide‐based pure employed from both direct air concentrated sources at room temperature atmospheric pressure. Structural characterization polymers...
The MOFs were constructed by ligand AHP and sulfonate analogues. MOF4 exhibits a high proton conductivity of 1.95 × 10<sup>−3</sup> S cm<sup>−1</sup> at 95 °C 98% relative humidity. 1–5 also serve as photocatalysts for methylene blue degradation.
ABSTRACT Sulfonated polytriazoles have drawn a great attention as high performance polymers and their good film forming ability. In the present study, phosphorus containing new diazide monomer namely, bis‐[4‐(4′‐aminophenoxy)phenyl]phenylphosphine was synthesized accordingly, series of sulfonated (PTPBSH‐XX) by reacting equimolar amount this (PAZ) in combination with another (DSAZ) terminal bis‐alkyne (BPALK) Cu (I) catalyzed azide–alkyne click polymerization. The were characterized nuclear...
ABSTRACT This work reports the synthesis and characterization of a series new sulfonated copolytriazoles. The polymers were prepared by CuI catalyzed 1,3‐cycloaddition reaction an equimolar amount dialkyne monomer, 1,3‐diethynylbenzene mixture two diazide monomers, namely, 4,4′‐diazidodiphenyl ether 4,4′‐diazido‐2,2′‐stilbenedisulfonic acid disodium salt. copolymers showed high inherent viscosity indicating formation molar mass product. characterized Fourier transform infrared proton nuclear...
A series of new sulfone-based sulfonated copolytriazoles (PTSFDSH-60 to 90) with different degrees sulfonation was designed and successfully synthesized using click polymerization. The high-molecular-weight were characterized by NMR FTIR techniques. solution-cast membranes the possessed high mechanical (85–131%) thermomechanical stability (>300 °C) exceptional thermal steadiness. multifaceted structural units made them act as multifunctional polymers for various applications. presence ionic...
Coordination polymers (CPs) have received great attention as promising proton-conducting materials because of easy functionalization and structural tunability. However, studies CPs illustrating the structure–property correlation are limited. The present study is focused on synthesis two one-dimensional copper(II) cadmium(II) with NO3– SO42– anions, respectively. former nitrate anions shows interdigitated 1D chains channels disordered water molecules, while crystal packing other zigzag a...
A ruthenium‐catalyzed one‐pot synthesis of O ‐dienyl esters through the regio‐ and stereoselective addition carboxylic acids to propargylic alcohols, atom‐transfer radical polymerisation products have been developed. The initial reaction takes place formation a carbon–oxygen bond followed by dehydration.
A new tetradentate phosphonate ligand-based Ni-MOF has been synthesized and employed as an efficient proton-conducting material upon doping with sulphuric acid.
Abstract The current article describes the design and synthesis of a new series phosphorus‐containing fluoro‐sulfonated polytriazoles through click polymerization. synthesized copolytriazoles (PTPFDSH‐70 to 90) with different degrees sulfonation (DS) from 70% 90% are structurally interpreted by various spectroscopic techniques ( 1 H, 13 C, FTIR). high molecular weight (weight average as 77 500 g mol −1 polydispersity index 2.29) polymers exhibits excellent mechanical (elongation at break up...
Post Synthetic Modification (PSM) of Metal-Organic Frameworks (MOFs) is a crucial strategy for developing new MOFs with enhanced functional properties compared to their parent one. PSM can be accomplished through various methods:1) modification organic linkers; 2) exchange metal ions or nodes; and 3) inclusion solvent/guest molecules. Herein, bimetallic monometallic containing biphenyl dinitro-tetra-carboxylates (NCA) are demonstrated. The tetra carboxylate NCA, produces Cd-MOF-1 Cu-MOF-1...
Abstract The incorporation of branching units in the polymer is beneficial improving many properties. This article deals with synthesis branched sulfonic acid–based copolytriazoles (PTHPSH‐XX) to prepare freestanding membranes. copolymers were synthesized by click reaction 1,4‐bis(prop‐2‐ynyloxy)benzene, 1,3,5 tris[2‐trifluoromethyl‐4(4‐azidophenyl) phenoxy]benzene (B 3 ), and 4,4′‐diazido‐2,2′‐stilbene disulfonic acid disodium salt. chemical constructions subsequent established...
Abstract The fast expansion of the plastics industry has intensified global crisis plastic waste pollution, ecological imbalance, and greenhouse gas emissions. This work highlights conversion method chaining up CO 2 with biomass lignin to develop new sustainable, recyclable polymers from abundant non-food based renewable resources. A lignin-based cyclic carbonate monomer been synthesized using a cost-effective, non-phosgene-based greener approach under atmospheric pressure room temperature....