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 journalArticle

19 Citations (Scopus)

Abstract

m- and p-Bis(diphenylene)propenylphenylacetylene (m-, p-8) were synthesized and polymerized with WCI6, moc15, 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 x 1023 spins per molar monomer unit. ESR spectroscopy suggested an antiferromagnetic interaction between unpaired electrons.

Original languageEnglish
Pages (from-to)775-786
Number of pages12
JournalJournal of Macromolecular Science, Part A
Volume29
Issue number9
DOIs
Publication statusPublished - 1992 Sep 1
Externally publishedYes

ASJC Scopus subject areas

  • Ceramics and Composites
  • Chemistry(all)
  • Polymers and Plastics
  • Materials Chemistry

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