cis-Selective Acyclic Diene Metathesis Polymerization of α,ω-Dienes.

ABSTRACT: The cis/trans stereochemistry of repeating alkenes in polymers provides a powerful handle to modulate the thermal and mechanical properties of these soft materials, but synthetic methods to precisely dictate this parameter remain scarce. We report herein a cis-selective acyclic diene metathesis (ADMET) polymerization of readily available α,ω-diene monomers with high functional group tolerance. Identification of a highly stereoselective cyclometalated Ru catalyst allowed the synthesis of a broad array of polymers with cis contents up to 99%. This platform was leveraged to study the impact of the cis geometry on the thermal and mechanical properties of polyalkenamers, including an ABA triblock copolymer synthesized via extension of a cis-rich teleche

SUBMITTER: Kempel SJ 

PROVIDER: S-EPMC10330887 | biostudies-literature | 2023 Jun

REPOSITORIES: biostudies-literature