Anisotropic highly-conductive films of poly(3-methylthiophene) from epitaxial electropolymerization on oriented poly(vinylidene fluoride)

被引:37
|
作者
Sun, Dianming [1 ]
Li, Yongxiu [1 ]
Ren, Zhongjie [1 ]
Bryce, Martin R. [2 ]
Li, Huihui [1 ]
Yan, Shouke [1 ]
机构
[1] Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China
[2] Univ Durham, Dept Chem, Durham DH1 3LE, England
关键词
SITU ELECTROCHEMICAL DEPOSITION; FIELD-EFFECT TRANSISTORS; INFRARED-SPECTRA; PERFORMANCE; TRANSITION; TRANSPORT; POLYMERS; POLY(3-HEXYLTHIOPHENE); POLYBITHIOPHENE; CRYSTALLIZATION;
D O I
10.1039/c4sc01068j
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Electrochemical polymerization of 3-methylthiophene on highly oriented poly(vinylidene fluoride) (PVDF) film was achieved by cyclic voltammetry to yield well-ordered poly(3-methylthiophene) (P3MT) thin films with anisotropic structural and conductivity properties. The conductivity of P3MT along the direction perpendicular to the chain direction of PVDF, after electrochemical dedoping, is 593 S cm1, while that along the PVDF chain direction is 1.20.4 S cm 1. The high conductivity of the P3MT is attributed to the well-ordered structure with its flat-on single crystals as confirmed by electron diffraction and Reflection Absorption Infra-red Spectroscopy (RAIRS). The data are consistent with P3MT chains aligned with p-p stacking perpendicular to the chain direction of the PVDF substrate. Epitaxial electropolymerization is an unusual method of preparing highly ordered thin films of organic semiconductors.
引用
收藏
页码:3240 / 3245
页数:6
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