The influence of the structural defects and microscopic aggregation of poly(3-alkylthiophenes) on electrochemical and optical properties of the polymer films: discussion of an origin of redox peaks in the cyclic voltammograms

被引：104

作者：

Skompska, M ^{[1
]}

Szkurlat, A ^{[1
]}

机构：

[1] Univ Warsaw, Dept Chem, Lab Electrochem, PL-02093 Warsaw, Poland

来源：

ELECTROCHIMICA ACTA | 2001年 / 46卷 / 26-27期

关键词：

poly(3-alkylthiophenes); cyclic voltammograms; spectroelectrochemistry; DCVA; aggregation;

D O I：

10.1016/S0013-4686(01)00710-1

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A comparative analysis of electrochemical and optical behaviour has been carried out on poly(3-hexylthiophene) and poly(3-dodecylthiophene) films of different content of HT couplings. The spectroelectrochemical properties of these polymers were examined by means of cyclic voltammetry (CV), differential cyclic voltabsorptometry (DCVA) and UV/vis spectroscopy at various doping levels. The presence of two or three redox peaks in the cyclic voltammograms, as well as the peak and shoulders in absorbance spectra of the neutral polymers, was discussed in terms of the co-existence of different types of zones with various morphology, crystallinity and conjugation lengths. The possibility of formation of a interchain bonds between the chains of the polymer studied is questioned, taking into account the results of DCVA and voltammetric measurements at different scan rates in the range 10-100 mV/s. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：4007 / 4015

页数：9

共 49 条

[1]

[Anonymous], SYNTH MET

[2]

[Anonymous], HDB CONDUCTING POLYM

[3]

ATTARD GS, 1986, CHEM BRIT OCT, P919

[4] REGIOCHEMISTRY AND CONFORMATION OF POLY(3-HEXYLTHIOPHENE) VIA THE SYNTHESIS AND THE SPECTROSCOPIC CHARACTERIZATION OF THE MODEL CONFIGURATIONAL TRIADS [J].

BARBARELLA, G ;

BONGINI, A ;

ZAMBIANCHI, M .

MACROMOLECULES, 1994, 27 (11) :3039-3045

[5] COMPARATIVE THEORETICAL-STUDY OF THE DOPING OF CONJUGATED POLYMERS - POLARONS IN POLYACETYLENE AND POLYPARAPHENYLENE [J].

BREDAS, JL ;

CHANCE, RR ;

SILBEY, R .

PHYSICAL REVIEW B, 1982, 26 (10) :5843-5854

[6] THE 1ST REGIOREGULAR HEAD-TO-TAIL POLY(3-HEXYLTHIOPHENE-2,5-DIYL) AND A REGIORANDOM ISOPOLYMER - NI VS PD CATALYSIS OF 2(5)-BROMO-5(2)-(BROMOZINCIO)-3-HEXYLTHIOPHENE POLYMERIZATION [J].

CHEN, TA ;

RIEKE, RD .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1992, 114 (25) :10087-10088

[7] Three-step redox in polythiophenes: Evidence from electrochemistry at an ultramicroelectrode [J].

Chen, XW ;

Inganas, O .

JOURNAL OF PHYSICAL CHEMISTRY, 1996, 100 (37) :15202-15206

[8]

CHUNG TC, 1984, PHYS REV B, V30, P702, DOI 10.1103/PhysRevB.30.702

[9] POLY(4,4'-DIMETHOXYBITHIOPHENE) - A NEW CONDUCTING POLYMER WITH EXTRAORDINARY REDOX AND OPTICAL-PROPERTIES [J].

DIETRICH, M ;

HEINZE, J .

SYNTHETIC METALS, 1991, 41 (1-2) :503-506

[10] CHARACTERIZATION OF THE RADICAL CATION AND THE DICATION SPECIES OF POLYPYRROLE BY SPECTROELECTROCHEMISTRY - KINETICS, REDOX PROPERTIES, AND STRUCTURAL-CHANGES UPON ELECTROCHEMICAL CYCLING [J].

GENIES, EM ;

PERNAUT, JM .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1985, 191 (01) :111-126

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