Electrical properties of 1,4-bis[2-(3,4,5-trimethoxyphenyl)ethenyl] benzene

被引：0
|
作者：
Mertens, R
Nagels, P
Van Roy, M
Dermaut, W
Van Alsenoy, C
Geise, HJ
机构：
[1] Univ Antwerp, RUCA, Dept Chem, B-2020 Antwerp, Belgium
[2] Univ Instelling Antwerp, Dept Chem, B-2610 Wilrijk, Belgium
来源：
SYNTHETIC METALS | 2003年 / 139卷 / 02期
关键词：
conducting oligomers; 1,4-bis[2-(3,4,5-trimethoxyphenyl)ethenyl] benzene; electrical conductivity; thermopower;
D O I：
10.1016/S0379-6779(03)00196-6
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The increase of the electrical conductivity of the arylenevinylene (AV) system 1,4-bis[2-(3,4,5-trimethoxyphenyl)ethenyl] benzene was measured as a function of the doping level of iodine. Compressed powders and films blended with polystyrene (PS) containing up to 30wt.% of the oligomer were used. At the highest doping level the conductivity of the compressed powder reaches a value of 3.3 x 10(-4) Omega(-1) cm(-1). The conductivity, measured between 90 and 300 K on the powder with the highest conductivity, is thermally activated with an activation energy of similar to0.1 eV. The thermopower is positive in agreement with a charge transfer from the organic chain to an iodine atom. Its value is small (25 muV K-1) and temperature independent. The results are interpreted in terms of small-polaron hopping. (C) 2003 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：453 / 456
页数：4
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