Study of magnetic properties of copolymer of 3-dodecylthiophene and 2,3-R,R-thieno[3,4-b]pyrazine

被引：2

作者：

Cík, G ^{[1
]}

Sersen, F

Dlhán, L

Cerven, I

Stasko, A

Végh, D

机构：

[1] Slovak Univ technol, Fac Chem & Food Technol, Dept Environm Sci, Bratislava 81237, Slovakia

[2] Comenius Univ, Fac Nat Sci, Inst Chem, Bratislava 84215, Slovakia

[3] Slovak Univ technol, Fac Chem & Food Technol, Dept Inorgan Chem, Bratislava 81237, Slovakia

[4] Fac elect Engn & Informat Technol, Dept Phys, Bratislava 81219, Slovakia

[5] Slovak Univ technol, Fac Chem & Food Technol, Dept Phys Chem, Bratislava 81237, Slovakia

[6] Slovak Univ technol, Fac Chem & Food Technol, Dept Organ Chem, Bratislava 81237, Slovakia

来源：

SYNTHETIC METALS | 2002年 / 130卷 / 02期

关键词：

conducting polymers; polyalkylthiophenes; antiferromagnetism; polarons;

D O I：

10.1016/S0379-6779(02)00113-3

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The EPR spectroscopy and the measurement of AC magnetic susceptibility (chi), magnetization and of specific heat capacity were used to study magnetic properties of the copolymer (COP) of 3-dodecylthiophene (DDT) and 2,3-R,R-thieno[3,4-b]pyrazine (TTP). The copolymer exhibits antiferromagnetic properties at the Neel temperature of ca. 38 K. At maximum complex, magnetic susceptibility achieved value of 6.5 x 10(-6) m(3) kg(-1). That behaviour was ascribed to the heat-activated transitions of bipolarons to polarons, which are stimulated by conformational changes in the polymer chains of semi-crystalline regions existing in the polymer. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：213 / 220

页数：8

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