π-conjugated polyradicals containing anthracene skeleton in the backbone chain

被引：6

作者：

Kaneko, T ^{[1
]}

Matsubara, T ^{[1
]}

Aoki, T ^{[1
]}

Oikawa, E ^{[1
]}

机构：

[1] Niigata Univ, Fac Engn, Dept Chem & Chem Engn, Niigata 9502181, Japan

来源：

MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 1999年 / 334卷

关键词：

polyradical; poly(anthraceneethynylene); ladder polymer; phenoxy radical; magnetic ineteraction; molecule-based magnets;

D O I：

10.1080/10587259908023320

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

The bromoethynylanthracene monomer with 3,5-di-tert-butyl-4-acetoxyphenyl group was newly synthesized and was polymerized by Pd(0) catalyst to give the head-to-tail regulated polymer with DP = 12. The ESR spectra of the anthracene-based polyradical suggested an effectively delocalized spin distribution an the backbone anthracene. The Delta m(s) = +/-2 forbidden transition ascribed to the triplet species was observed at g = 4 in frozen toluene glass. Magnetization and static magnetic susceptibility of the polyradical were measured using a SQUID magnetometer. The average spin quantum number was beyond S = 1/2, indicating the ferromagnetic interaction.

引用

页码：221 / 228

页数：8

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