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

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

^*Corresponding author for this work

Waseda Research Institute for Science and Engineering

Research output: Contribution to journal › Article › peer-review

18 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 M̄_w = 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 language	English
Pages (from-to)	189-198
Number of pages	10
Journal	Journal of Polymer Science, Part A: Polymer Chemistry
Volume	37
Issue number	2
Publication status	Published - 1999 Jan 15

Keywords

ESR
Galvinoxyl
Magnetic property
Phenoxy radical
Polyradical
Radical polymerization

ASJC Scopus subject areas

Materials Chemistry
Polymers and Plastics

Cite this

@article{c63807876783492db120444bfe2a1776,

title = "Polymerization of (p-Vinylphenyl)hydrogalvinoxyl and Formation of a Stable Polyradical Derivative",

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 {\=M}w = 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.",

keywords = "ESR, Galvinoxyl, Magnetic property, Phenoxy radical, Polyradical, Radical polymerization",

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

year = "1999",

month = jan,

day = "15",

language = "English",

volume = "37",

pages = "189--198",

journal = "Journal of Polymer Science, Part A: Polymer Chemistry",

issn = "0887-624X",

publisher = "John Wiley and Sons Inc.",

number = "2",

}

TY - JOUR

T1 - Polymerization of (p-Vinylphenyl)hydrogalvinoxyl and Formation of a Stable Polyradical Derivative

AU - Kaneko, Takashi

AU - Tatsumi, Hiroyuki

AU - Aoki, Toshiki

AU - Oikawa, Eizo

AU - Yoshiki, Hajime

AU - Yoshioka, Naoki

AU - Tsuchida, Eishun

AU - Nishide, Hiroyuki

PY - 1999/1/15

Y1 - 1999/1/15

N2 - 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.

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.

KW - ESR

KW - Galvinoxyl

KW - Magnetic property

KW - Phenoxy radical

KW - Polyradical

KW - Radical polymerization

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M3 - Article

AN - SCOPUS:0032785127

SN - 0887-624X

VL - 37

SP - 189

EP - 198

JO - Journal of Polymer Science, Part A: Polymer Chemistry

JF - Journal of Polymer Science, Part A: Polymer Chemistry

IS - 2

ER -

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

Abstract

Keywords

ASJC Scopus subject areas

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