Stereoselective Cationic Polymerization of Prochiral Monomers

Explore stereoselective cationic polymerization of prochiral monomers in this 49-minute webinar presented by Prof. Frank Leibfarth from the NSF Center for Integrated Catalysis. Delve into fundamental knowledge related to integrated catalysis, covering topics such as stereochemistry's impact on emergent properties, canonical methods for controlling polymer stereochemistry, and mechanisms for stereoinduction in olefin polymerization. Learn about a novel approach using chiral counterions and Lewis acids to control stereochemistry in vinyl ether polymerization. Examine catalyst substitution effects, reaction condition optimization, and proposed mechanisms for stereoselective cationic polymerization. Investigate kinetics, Arrhenius analysis, and computational studies revealing catalyst structure. Discover how stereocontrol imparts emergent mechanical properties and explore improvements in catalyst design for new reactivity. Discuss the potential of chiral counterion catalysis as a general approach and the control of polymer configuration to conformation. Gain insights into improving isotacticity through ligand modification and investigate the source of high stereoselectivity, including proposed stereodetermining steps and the importance of first monomer propagation in determining helicity.