Synthesis of an optically active poly(phenylacetylene) bearing galvinoxyl radicals for magnetic materials

被引：26

作者：

Kaneko, T ^{[1
]}

Yamamoto, T ^{[1
]}

Aoki, T ^{[1
]}

Oikawa, E ^{[1
]}

机构：

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

来源：

CHEMISTRY LETTERS | 1999年 / 07期

关键词：

D O I：

10.1246/cl.1999.623

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

An optically active polyradical was first synthesized by copolymerization of (4-ethynylphenyl)hydrogalvinoxyl and chiral acetylene monomer using Rh-catalyst. The circular dichroism spectrum of the polyradical showed a Cotton effect indicating the, exess of one-handed helix backbone and the induced chirality of side-chain galvinoxyl units. Intermoleculer antiferromagnetic interaction observed for the polyradical was larger than that of the corresponding polyradical without excess of one-handed helix.

引用

页码：623 / 624

页数：2

共 23 条

[1] CHIRAL HELICAL CONFORMATION OF THE POLYPHENYLACETYLENE HAVING OPTICALLY-ACTIVE BULKY SUBSTITUENT [J].

AOKI, T ;

KOKAI, M ;

SHINOHARA, K ;

OIKAWA, E .

CHEMISTRY LETTERS, 1993, (12) :2009-2012

[2]

AOKI T, 1999, UNPUB POLYM J

[3] SPIN CONTROL IN ORGANIC-MOLECULES [J].

DOUGHERTY, DA .

ACCOUNTS OF CHEMICAL RESEARCH, 1991, 24 (03) :88-94

[4] ELECTRONIC-STRUCTURES OF AROMATIC-HYDROCARBONS WITH HIGH-SPIN MULTIPLICITIES IN THE ELECTRONIC GROUND-STATE [J].

ITOH, K .

PURE AND APPLIED CHEMISTRY, 1978, 50 (11-1) :1251-1259

[5]

ITOH K, 1997, MOL CRYST LIQ CRYST, V305

[6] STUDIES OF ORGANIC DIRADICALS, OLIGORADICALS, AND POLYRADICALS BY MEANS OF THEIR BULK MAGNETIC-PROPERTIES [J].

IWAMURA, H ;

KOGA, N .

ACCOUNTS OF CHEMICAL RESEARCH, 1993, 26 (06) :346-351

[7] LIVING POLYMERIZATION OF PHENYLACETYLENES INITIATED BY RH(C-CC6H5)(2,5-NORBORNADIENE)[P(C6H5)(3)](2) [J].

KISHIMOTO, Y ;

ECKERLE, P ;

MIYATAKE, T ;

IKARIYA, T ;

NOYORI, R .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1994, 116 (26) :12131-12132

[8] MAGNETIC CHARACTERIZATION AND COMPUTATIONAL MODELING OF POLY(PHENYLACETYLENE)S BEARING STABLE RADICAL GROUPS [J].

NISHIDE, H ;

KANEKO, T ;

IGARASHI, M ;

TSUCHIDA, E ;

YOSHIOKA, N ;

LAHTI, PM .

MACROMOLECULES, 1994, 27 (11) :3082-3086

[9] POLY(PARA-ETHYNYLPHENYL)GALVINOXYL - FORMATION OF A NEW CONJUGATED POLYRADICAL WITH AN EXTRAORDINARILY HIGH-SPIN CONCENTRATION [J].

NISHIDE, H ;

YOSHIOKA, N ;

KANEKO, T ;

TSUCHIDA, E .

MACROMOLECULES, 1990, 23 (20) :4487-4488

[10]

Nishide H, 1999, MAGNETIC PROPERTIES OF ORGANIC MATERIALS, P285

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