title: Metal-Free Preparation of Linear and Cross-Linked Polydicyclopentadiene.
abstract: Metal-free ring-opening metathesis polymerization (ROMP) utilizes organic photoredox mediators as alternatives to traditional metal-based ROMP initiators to allow the preparation of polymers without residual metal contamination. Herein we report studies exploring the use of endo-dicyclopentadiene (DCPD), a common ROMP monomer, to form linear polyDCPD and copolymers with norbornene. Subsequent cross-linking of the linear polyDCPD using thiol-ene chemistry allows for a completely metal-free preparation of cross-linked polyDCPD. Furthermore, the examination of a number of structurally related monomers offers insights into mechanistic details of this polymerization and demonstrates new monomers that can be utilized for metal-free ROMP.
authors.affiliation: Department of Chemistry, University of Washington, Seattle, Washington 98195, United States.
authors.forename: Adam E
authors.initials: AE
authors.lastname: Goetz
authors.affiliation: Department of Chemistry, University of Washington, Seattle, Washington 98195, United States.
authors.forename: Andrew J
authors.initials: AJ
authors.lastname: Boydston