A Method of Synthesis of PBAT Using Group 4 and Group 13 initiators
Debashis Chakraborty, Sourav Singha Roy, Sriparna Sarkar
Indian Pat. Appl. 2024, Filed.
Home Research
ResearchOrganometallics, polymers and catalysis.
Organometallic chemistry for polymer synthesis and catalysis, homogeneous catalysis, CO2 sequestration, chemical process development and heterogeneous catalysis.
Research thrusts
Six lines of enquiry, one question.
How precisely can a metal center and its ligand environment be tuned to control what a polymer becomes — its tacticity, its degradability, and the waste stream it is built from?
01
Ring-Opening Polymerization
Transition-metal organometallics and simple metal salts as catalysts for the ROP of cyclic esters and lactides, resolving how ancillary ligands on the metal center govern polymerization behavior and tacticity.
Read more 02Metal-Free Catalysis
Phosphorus(V) compounds as metal-free initiators for cyclic ester and lactide polymerization — removing metal residues from biomedical-grade polyesters.
Read more 03CO2 Sequestration & Utilization
Ring-opening copolymerization of epoxides with CO2 and with cyclic anhydrides, converting a waste greenhouse gas into aliphatic polycarbonates.
Read more 04Olefin Polymerization
Design and synthesis of new non-metallocene pre-catalysts for olefin polymerization, extending control over polymer architecture.
Read more 05Wealth From Waste
L/D-lactide recovered from bio-derived lactic acid sourced from food waste, closing the loop between waste streams and biodegradable plastics.
Read more 06Biodegradable Polymers in Medicine
Polyester carriers and biogenic metal nanoparticles developed for drug delivery, in collaboration with biotechnology groups.
Read moreThird-party funding
8 funded programs.
Supported by DST, CSIR, the UGC–Israel Science Foundation, SERB, the Anusandhan National Research Foundation and industry.
Improved methodology for potassium chlorate production
Metallo- Phosphonamides and Phosphonates: Synthesis, Structural Characterization and Some Exploratory Investigations
Dialkylhypophosphonates and Pyrophosphonic acids: New Precursors to Metallophosphonate Derivatives
Group 4 metal complexes derived from Schiff’s base and amide ligand scaffolds: synthesis, characterization and polymerization studies
Polymerization of Cyclic Esters using Activated Monomer Mechanism
New Catalysts for Sustainable Polymers and Copolymers
Chiral metal catalysts towards the synthesis of biodegradable polymers and co-polymers
Harnessing Privileged Chiral Ligands for High-Performance Sustainable Polymers
Intellectual property
16 patents.
Filed and granted in India, the United States and via PCT — covering catalysts for poly(lactide) synthesis, metal-free polyester routes, CO2-to-polycarbonate organocatalysts and PBAT manufacture.
The ROCOP of epoxide and CO2 to generate aliphatic polycarbonates using simple Organocatalyst
Debashis Chakraborty, Sourav Singha Roy, Sriparna Sarkar
Indian Pat. Appl. 2024, IN202441026250. (Approved)
Synthesis, characterization and catalytic activity of THF coordinated monomeric Group 13 metal isopropoxide isopropanol adduct
Debashis Chakraborty, Sourav Singha Roy, Sriparna Sarkar
Indian Pat. Appl. 2024, IN202441006651. (Approved)
Metal-free polyester based nano-drug carrier
Piyush Kumar Gupta, Anjaneyulu Kummari, Santosh Gupta, Debashis Chakraborty, Rama Shanker Verma
Indian Pat. Appl. 2019, IN 201841019915 A 20191129. (Approved)
Collaborate with us.
We work with academic groups and industry on catalysis for sustainable polymers, CO2 utilization and process development.