Morphological changes in electrochemically deposited poly(3,4-ethylenedioxythiophene) films during overoxidation

被引：30

作者：

Ujvari, M. ^{[1
]}

Gubicza, J. ^{[2
]}

Kondratiev, V. ^{[3
]}

Szekeres, K. J. ^{[1
]}

Lang, G. G. ^{[1
]}

机构：

[1] Eotvos Lorand Univ, Inst Chem, Dept Phys Chem, Lab Electrochem & Electroanal Chem, H-1117 Budapest, Hungary

[2] Eotvos Lorand Univ, Inst Phys, Dept Mat Phys, H-1117 Budapest, Hungary

[3] St Petersburg State Univ, Dept Chem, St Petersburg 198504, Russia

来源：

JOURNAL OF SOLID STATE ELECTROCHEMISTRY | 2015年 / 19卷 / 04期

基金：

匈牙利科学研究基金会; 俄罗斯基础研究基金会;

关键词：

Overoxidation of PEDOT; Crystalline phase; Scanning electron microscopy; X-ray diffraction; Sensors; CONDUCTING POLYMERS; POLYPYRROLE; PEDOT; STABILITY; IMPEDANCE; ELECTRON; DOPAMINE;

D O I：

10.1007/s10008-015-2746-6

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Electrochemical and morphological properties of thin poly(3,4-ethylenedioxy-thiophene) (PEDOT) films deposited on gold were investigated in aqueous sulfuric acid solutions. X-ray diffraction and electron microscopy were used for monitoring the morphological changes and structure evolution caused by overoxidation. The diffraction peaks of PEDOT became sharper and more intensive during the subsequent oxidation cycles. This indicates that besides the degradation of the PEDOT film, its crystallinity was gradually improved with increasing the number of oxidation cycles. These changes may result in the appearance of novel properties that may be advantageous for specific applications.

引用

页码：1247 / 1252

页数：6

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