Photoredox-Initiated Frontal Ring-Opening Metathesis Polymerization

Katherine J. Stawiasz, Chloe I. Wendell, Benjamin A. Suslick, Jeffrey S. Moore

Research output: Contribution to journalArticlepeer-review

Abstract

Herein, we report the development of a photoredox-initiated frontal ring-opening metathesis polymerization (FROMP) chemical system. We found that a ruthenium-based, bis-N-heterocyclic carbene metathesis precatalyst was activated with 9-mesityl-10-phenylacridindium tetrafluoroborate, copper(II) triflate, and a 455 nm light source. This chemistry was used to initiate the FROMP of dicyclopentadiene; once initiated, the heat released from the polymerization sustained a well-controlled reaction front. Variation in copper or metathesis precatalyst loading yielded front speeds ranging from 0.15 to 0.43 mm s-1 and front temperatures ranging from 140 to 205 °C. While the glass transition temperatures of the resultant polymers are lower than those derived with Grubbs’ second-generation catalyst, this chemical system provides extended pot life.

Original languageEnglish (US)
Pages (from-to)780-784
Number of pages5
JournalACS Macro Letters
Volume11
Issue number6
Early online dateMay 27 2022
DOIs
StatePublished - Jun 21 2022

ASJC Scopus subject areas

  • Materials Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry
  • Organic Chemistry

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