Identification of electrochromic sites in poly(diphenylamine) using a novel absorbance-potential-wavelength profile

被引：64

作者：

Chung, CY

Wen, TC ^{[1
]}

Gopalan, A

机构：

[1] Natl Cheng Kung Univ, Dept Chem Engn, Tainan 701, Taiwan

[2] Alagappa Univ, Dept Ind Chem, Karaikkudi, Tamil Nadu, India

来源：

ELECTROCHIMICA ACTA | 2001年 / 47卷 / 03期

关键词：

poly(diphenylamine); spectroelectrochemistry; electrochromism; dynamic spectrovoltammetry; absorbance-potential-wavelength profile;

D O I：

10.1016/S0013-4686(01)00742-3

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Poly(diphenylamine) (PDPA) film was deposited on indium doped tin oxide coated glass electrode in I M perchloric acid by cyclic voltammetry. Cyclic voltammograms (CVs) of the PDPA film were recorded with different potential limits and the redox transitions in PDPA were identified. The spectroscopic changes accompanying the redox transitions were followed at different applied potentials using UV-visible spectroscopy. Dynamic cyclic spectrovoltammetry was used to deduce the derivative cyclic voltabsorptogram (DCVA). The absorbance changes are represented by constructing a novel absorbance-potential-wavelength profile. In the profile, the CV showing the redox transitions is presented side by side to identify the electrochromic sites in PDPA in an easy way. The results deduced are compared with the conventional DCVA. Identifying the electrochromic sites brought out the differences in electrochromic behavior between PDPA and PANI. (C) 2001 Elsevier Science Ltd. Ail rights reserved.

引用

页码：423 / 431

页数：9

共 27 条

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