Mittwoch, 07. Oktober 2015, 16:15 - 17:15 iCal
"Chiral indium and zinc catalysts for the living and immortal polymerization of cyclic esters"
Prof. Dr. Parisa Mehrkhodavandi / University of British Columbia
Hörsaal 3 der Fakultät für Chemie
Währinger Straße 38, 1090 Wien
Vortrag
Poly(lactic acid) (PLA) is a widely used, biodegradable polymer which is commercially sythesized. The controlled ring opening polymerization of lactide and other cyclic esters to create a new generation of high functioning biodegradable material remains a challenge that is being addressed by many chemists. We have developed a family of indium compounds supported by chiral amino phenolate ligands and have explored their reactivity for the living and immortal ring opening polymerization of lactide. These complexes are highly active catalysts for living PLA formation and exhibit significant control of polymer macro- and microstructure. We have examined the origin of stereoselectivity during lactide polymerization and applied these catalysts to other cyclic esters. Cationic indium catalysts are capable of alternating copolymerization cyclic esters and ethers. The synthesis, reactivity, and potential applications of these indium compounds will be discussed.
Veranstalter
Kontakt
Brigitte Schwarz
Fakultät für Chemie der Universität Wien
Dekanat
01/4277-52006
brigitte_schwarz@univie.ac.at
Erstellt am Donnerstag, 30. Juli 2015, 14:06
Letzte Änderung am Dienstag, 25. August 2015, 12:08