Chronocoulometric determination of doping levels of polythiophenes: influences of overoxidation and capacitive processes

被引：47

作者：

Tang, HQ

Zhu, LH

Harima, Y ^{[1
]}

Yamashita, K

机构：

[1] Hiroshima Univ, Venture Business Lab, Higashihiroshima 7398527, Japan

[2] Hiroshima Univ, Fac Integrated Arts & Sci, Higashihiroshima 7398521, Japan

来源：

SYNTHETIC METALS | 2000年 / 110卷 / 02期

基金：

日本学术振兴会;

关键词：

chronocoulometric determination; polythiophenes; overoxidation;

D O I：

10.1016/S0379-6779(99)00269-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Quasi-stationary determination of doping levels of polythiophenes has been successfully achieved in a wide potential window by using a modified potential-step chronocoulometric measurement of the charges consumed in oxidation and reduction processes of the polymers. Influences of experimental conditions, capacitive current-producing process and overoxidation process are discussed on the estimation of the doping levels of the polymers. (C) 2000 Elsevier Science S.A. All rights reserved.

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收藏

页码：105 / 113

页数：9

相关论文

共 17 条

[1]

[Anonymous], ADV POLYM SCI

[2] NANOSCALE DIMENSIONAL CHANGES AND OPTICAL-PROPERTIES OF POLYANILINE MEASURED BY IN-SITU SPECTROSCOPIC ELLIPSOMETRY [J].

BARBERO, C ;

KOTZ, R .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1994, 141 (04) :859-865

[3] SYNTHESIS OF HIGHLY CONDUCTING FILMS OF DERIVATIVES OF POLYACETYLENE, (CH)X [J].

CHIANG, CK ;

DRUY, MA ;

GAU, SC ;

HEEGER, AJ ;

LOUIS, EJ ;

MACDIARMID, AG ;

PARK, YW ;

SHIRAKAWA, H .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1978, 100 (03) :1013-1015

[4] REINTERPRETATION OF POLYPYRROLE ELECTROCHEMISTRY - CONSIDERATION OF CAPACITIVE CURRENTS IN REDOX SWITCHING OF CONDUCTING POLYMERS [J].

FELDBERG, SW .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1984, 106 (17) :4671-4674

[5] Impedance analysis of electronically conducting polymers [J].

Ferloni, P ;

Mastragostino, M ;

Meneghello, L .

ELECTROCHIMICA ACTA, 1996, 41 (01) :27-33

[6] Enhancement of carrier mobilities in poly(3-methylthiophene) by an electrochemical doping [J].

Harima, Y ;

Eguchi, T ;

Yamashita, K .

SYNTHETIC METALS, 1998, 95 (01) :69-74

[7] An in situ ESR study on poly(3-methylthiophene): charge transport due to polarons and bipolarons before the evolution of metallic conduction [J].

Harima, Y ;

Eguchi, T ;

Yamashita, K ;

Kojima, K ;

Shiotani, M .

SYNTHETIC METALS, 1999, 105 (02) :121-128

[8] Electrochemical generation of cation radical π-dimers in polymer film composed of pentathiophenes bridged by monosilanylene units [J].

Harima, Y ;

Tang, H ;

Zhu, L ;

Yamashita, K ;

Ohshita, J ;

Kunai, A .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1999, 472 (02) :157-162

[9]

JONAS F, 1994, ELECTROCHIM ACTA, V39, P1354

[10] Polyaniline and polypyrrole: Where are we headed? [J].

MacDiarmid, AG .

SYNTHETIC METALS, 1997, 84 (1-3) :27-34