期刊
ELECTROCHIMICA ACTA
卷 56, 期 10, 页码 3494-3499出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2011.01.044
关键词
Poly(1,8-diaminocarbazole); EQCM; Doping/undoping; Protonation; Conducting polymer
资金
- Polish Ministry of Science and Higher Education [N N204 0464 33]
Electropolymerization and doping/undoping process of poly(1,8-diaminocarbazole)(PDACz) were investigated by cyclic voltammetry combined with electrochemical quartz microbalance (EQCM), in aqueous solution of 0.1 M HClO4 and in 0.1 M LiClO4 in acetonitrile. The results demonstrated that protonation of the polymer in HClO4 strongly influences the gravimetric response obtained during polymerization as well as the mechanism of redox process of the polymer in the monomer-free solution. The data are discussed in terms of the presence of protons and ClO4- counter ions in the reduced (neutral) polymer matrix. In aprotic acetonitrile containing LiClO4 as the supporting electrolyte, the polymer doping/undoping occurs according to the simple mechanism with exchange of anions. The gravimetric results obtained in acidic aqueous solution allowed for some revision of the scheme of the redox process proposed by the authors in the previous paper. (C) 2011 Elsevier Ltd. All rights reserved.
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