Dr. Maria Gringolts
Dr. Maria Gringolts
Russian Academy of Sciences, Russia
Title: Olefin Metathesis in Copolymer Synthesis
Olefin metathesis has now become a well-known and effective tool in organic and polymer chemistry. The great developments in synthesis of effective and tolerant catalyst, which earned Nobel Prize in 2005 year, and modern synthesis of stereo- and enantioselective catalysts have put forward olefin metathesis to the number of effective tools for the design of macromolecules of diverse architecture. Most of approaches to metathesis (co)polymer synthesis are based on two main types of the reaction: ring-opening metathesis polymerization (ROMP) of cyclic olefins and acyclic diene metathesis (ADMET). The possibility to realize “living” or controlled synthesis supplies the way to block-copolymers and sequence controlled (co)polymerization. Catalysts for ROMP can be tuned to achieve alternating copolymers. Structure of comonomers is another way to copolymer design. We focused on a poor studied macromolecular olefin cross-metathesis between different polymers with double bonds in the main chain, which is a new way to statistical multiblock-copolymers. During the interaction between two chemically different macromolecules with unsaturated backbones an interchange reaction takes place and a copolymer is formed. For our study, we have chosen commercial polymers, namely polynorbornene (PNB), polyoctenamer (PCOE), polybutadiene (PBD), and polyoctenamer with different substituents. The new statistical multiblock NB-COE and NB-COD copolymers up to the fully random structure were obtained via the cross-metathesis reaction. The «structure-properties» relations for the cross-olefin metathesis copolymers will be demonstrated. The author is grateful to the Russian Foundation for Basic Research (Projects 17-03-00596)
Maria L. Gringolts is an Associate Professor and a Chief Researcher at Laboratory for Organosilicon and Hydrocarbon Cyclic Compounds at A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences in Moscow. Previously, she was a Senior Researcher at Russian Institute of Organic Synthesis (VNIIOS) in Novokuibyshevsk and Moscow. She was graduated from Leningrad Technology Institute (Russia). She holds PhD in Petrochemistry from Institute of Organic Synthesis, Russian Academy of Sciences (RAS) (Moscow) and Doctor of Sciences in Petrochemistry from A.V. Topchiev Institute of Petrochemical Synthesis RAS. She has published more than 170 papers in journals, books and conference proceedings, including more than 50 scientific papers in journals, indexed in the Web of Science, Scopus and RSCI (Russian Science Citation Index) such as Macromolecules, Journal of Membrane Science, European Polymer Journal, Polymer Science, RSC Advances, Polymer etc. Currently, she is interested on catalytic olefin metathesis, ring-opening metathesis and addition (co)polymerization of norbornenes and unsaturated cyclic carbosilanes, synthesis of glassy polymer membrane materials for gas separation.