Poly[(p-ethynylphenyl)hydrogalvinoxyl] and Its Polyradical Derivative with High Spin Concentration

Naoki Yoshioka, Hiroyuki Nishide, Takashi Kaneko, Hajime Yoshiki, Eishun Tsuchida

研究成果: Article査読

51 被引用数 (Scopus)

抄録

[4-[(3,5-Di-tert-butyl-4-hydroxyphenyl)(3,5-di-tert-butyl-4-oxocyclohexa-2,5-dien-1-ylidene)-methyl]phenyl]acetylene (6), was synthesized and polymerized to yield a solvent-soluble polyacetylene poly-[[4-[(3,5-di-tert-butyl-4-hydroxyphenyl)(3,5-di-tert-butyl-4-oxocyclohexa-2,5-dien-1-ylidene)methyl]phenyl] acetylene] (5a). The polymer gave its polyradical derivative 5b through the chemical oxidation with active PbO2. 5b was stable, whose spin concentration could be increased up to 4.8 × 1023 spins per molar monomer unit. ESR analysis indicated localization of unpaired electrons in the galvinoxyl residue. ESR analysis also suggested an exchange-narrowing and interpolymer dipole-dipole interaction.

本文言語English
ページ(範囲)3838-3842
ページ数5
ジャーナルMacromolecules
25
15
DOI
出版ステータスPublished - 1992 7月 1
外部発表はい

ASJC Scopus subject areas

  • 有機化学
  • ポリマーおよびプラスチック
  • 無機化学
  • 材料化学

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