Fast Ring-Opening Metathesis Polymerization of Tricyclic Oxanorbornene Derivatives

• DOI: 10.1021/acs.macromol.2c00274
• Publication Date: 2022-04-27T13:36:23Z
• Authors: Zhenghao Dong; Peng Liu; Aurelien Crochet; Andreas F. M. Kil...
• Keywords: Tricyclic

A new type of tricyclic oxanorbornene monomer was developed for living ring-opening metathesis polymerization (ROMP). methyl group located at the endoposition bicycle resulted in kinetics orders magnitude slower than corresponding hydrogen-substituted monomers because steric effects. Both showed well-controlled molecular weights and excellent dispersities with Grubbs' third-generation catalyst. The endomethyl substituted could even be polymerized a manner using second-generation Investigations random copolymers demonstrated that hindrance only affects rate propagation rather initiation. Block between fast slow prepared good weight dispersity control.