Polymerization of (p-Vinylphenyl)hydrogalvinoxyl and Formation of a Stable Polyradical Derivative

Takashi Kaneko, Hiroyuki Tatsumi, Toshiki Aoki, Eizo Oikawa, Hajime Yoshiki, Naoki Yoshioka, Eishun Tsuchida, Hiroyuki Nishide

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

4-[(3,5-Di-tert-butyl-4-hydroxyphenyl)(3,5-di-tert-butyl-4-oxo-cyclohexa-2, 5-dienylidene)methyl]styrene (abbreviated as (p-vinylphenyl)hydrogalvinoxyl) was polymerized using AIBN as an initiator to give a bright yellow polymer with M̄w = 3.2 × 104. The polymer was oxidized to give the corresponding polyradical derivative, whose spin concentration could be increased up to about 70 mol % depending on oxidative conditions. ESR signal line-width in the solid state was greatly increased below 200 K for the polyradical with a high spin concentration (> 50 mol %). The magnetization and magnetic susceptibility indicated weak antiferromagnetic interaction among the radical sites.

Original languageEnglish
Pages (from-to)189-198
Number of pages10
JournalJournal of Polymer Science, Part A: Polymer Chemistry
Volume37
Issue number2
Publication statusPublished - 1999 Jan 15

Fingerprint

Polymers
Polymerization
Derivatives
Styrene
Magnetic susceptibility
Linewidth
Paramagnetic resonance
Magnetization
3,5-di-tert-butyl-4-hydroxyphenyl
azobis(isobutyronitrile)

Keywords

  • ESR
  • Galvinoxyl
  • Magnetic property
  • Phenoxy radical
  • Polyradical
  • Radical polymerization

ASJC Scopus subject areas

  • Materials Chemistry
  • Polymers and Plastics

Cite this

Polymerization of (p-Vinylphenyl)hydrogalvinoxyl and Formation of a Stable Polyradical Derivative. / Kaneko, Takashi; Tatsumi, Hiroyuki; Aoki, Toshiki; Oikawa, Eizo; Yoshiki, Hajime; Yoshioka, Naoki; Tsuchida, Eishun; Nishide, Hiroyuki.

In: Journal of Polymer Science, Part A: Polymer Chemistry, Vol. 37, No. 2, 15.01.1999, p. 189-198.

Research output: Contribution to journalArticle

Kaneko, T, Tatsumi, H, Aoki, T, Oikawa, E, Yoshiki, H, Yoshioka, N, Tsuchida, E & Nishide, H 1999, 'Polymerization of (p-Vinylphenyl)hydrogalvinoxyl and Formation of a Stable Polyradical Derivative', Journal of Polymer Science, Part A: Polymer Chemistry, vol. 37, no. 2, pp. 189-198.
Kaneko, Takashi ; Tatsumi, Hiroyuki ; Aoki, Toshiki ; Oikawa, Eizo ; Yoshiki, Hajime ; Yoshioka, Naoki ; Tsuchida, Eishun ; Nishide, Hiroyuki. / Polymerization of (p-Vinylphenyl)hydrogalvinoxyl and Formation of a Stable Polyradical Derivative. In: Journal of Polymer Science, Part A: Polymer Chemistry. 1999 ; Vol. 37, No. 2. pp. 189-198.
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AU - Aoki, Toshiki

AU - Oikawa, Eizo

AU - Yoshiki, Hajime

AU - Yoshioka, Naoki

AU - Tsuchida, Eishun

AU - Nishide, Hiroyuki

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AB - 4-[(3,5-Di-tert-butyl-4-hydroxyphenyl)(3,5-di-tert-butyl-4-oxo-cyclohexa-2, 5-dienylidene)methyl]styrene (abbreviated as (p-vinylphenyl)hydrogalvinoxyl) was polymerized using AIBN as an initiator to give a bright yellow polymer with M̄w = 3.2 × 104. The polymer was oxidized to give the corresponding polyradical derivative, whose spin concentration could be increased up to about 70 mol % depending on oxidative conditions. ESR signal line-width in the solid state was greatly increased below 200 K for the polyradical with a high spin concentration (> 50 mol %). The magnetization and magnetic susceptibility indicated weak antiferromagnetic interaction among the radical sites.

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KW - Magnetic property

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