Synthesis and magnetic property of polyacetylene bearing π-conjugated bis(diphenylene)phenylallyl radical

Hiroyuki Nishide, Naoki Yoshioka, Yukoh Saitoh, Ritsuko Gotoh, Takeshi Miyakawa, Eishun Tsuchida

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)

Abstract

m- and p-Bis(diphenylene)propenylphenylacetylene (m-, p-8) were synthesized and polymerized with WCl6, MoCl5, and Rh catalyst, yielding solvent-soluble poly(phenylacetylene)s bearing a π-conjugated bis(diphenylene)propenyl groups (m-, p-7a). The polymers gave their polyanion derivatives, which were electrolytically and chemically oxidized to yield the corresponding polyradicals (m-, p-7b). The polyradicals were chemically very stable due to the resonance stabilization of an unpaired electron whose spin concentration could be increased up to ca. 2 × 1023 spins per molar monomer unit. ESR spectroscopy suggested an antiferro-magnetic interaction between unpaired electrons.

Original languageEnglish
Pages (from-to)775-786
Number of pages12
JournalJournal of Macromolecular Science - Pure and Applied Chemistry
VolumeA29
Issue number9
Publication statusPublished - 1992

ASJC Scopus subject areas

  • Materials Chemistry
  • Polymers and Plastics

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