In situ cyclic voltammetry-surface-enhanced Raman spectroscopy: Studies on the doping-undoping of polypyrrole film

Yu Chuan Liu, Bing Joe Hwang, Wen Jie Jian, Raman Santhanam

研究成果: 雜誌貢獻文章

127 引文 (Scopus)

摘要

The redox behavior of polypyrrole (PPy) film in 0.2 M aqueous KNO3 solution was investigated by cyclic voltammetry (CV) in situ surface-enhanced Raman spectroscopy (SERS). The results show that the Raman intensity of C double bond C backbone stretching decreases and increases regularly with the anodic and cathodic scans, respectively, owing to the change of surface roughness and the possibility of state transition. The peak position of C-H in-plane deformation remains unchanged both in anodic and cathodic scans. Furthermore, the peak positions of N-H in-plane deformation and ring deformation shift to lower and higher wavenumbers with anodic and cathodic scans, respectively. Also the Raman peak of the NO3 - dopant ions appears significant when PPy is in a more oxidized state.

原文英語
頁(從 - 到)85-91
頁數7
期刊Thin Solid Films
374
發行號1
DOIs
出版狀態已發佈 - 十月 3 2000
對外發佈Yes

指紋

polypyrroles
Polypyrroles
Cyclic voltammetry
Raman spectroscopy
Doping (additives)
Stretching
surface roughness
Surface roughness
Ions
aqueous solutions
rings
shift
polypyrrole
ions

ASJC Scopus subject areas

  • Surfaces, Coatings and Films
  • Condensed Matter Physics
  • Surfaces and Interfaces

引用此文

In situ cyclic voltammetry-surface-enhanced Raman spectroscopy : Studies on the doping-undoping of polypyrrole film. / Liu, Yu Chuan; Hwang, Bing Joe; Jian, Wen Jie; Santhanam, Raman.

於: Thin Solid Films, 卷 374, 編號 1, 03.10.2000, p. 85-91.

研究成果: 雜誌貢獻文章

Liu, Yu Chuan ; Hwang, Bing Joe ; Jian, Wen Jie ; Santhanam, Raman. / In situ cyclic voltammetry-surface-enhanced Raman spectroscopy : Studies on the doping-undoping of polypyrrole film. 於: Thin Solid Films. 2000 ; 卷 374, 編號 1. 頁 85-91.
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