Identification of oxidized polypyrrole on Raman spectrum

Yu Chuan Liu, Bing Joe Hwang

Research output: Contribution to journalArticlepeer-review

156 Citations (Scopus)


In this study, the peak shown at the higher frequency of the double peaks at about 1052 and 1083 cm-1 in surface-enhanced Raman spectroscopy (SERS) is initially assigned to be the C-H in plane deformation of oxidized polypyrrole (PPy). Then, a systematic study is carried out to confirm this assignment. It is found that the conductivity of PPy is strongly related to and increases with this Raman peak intensity of oxidized PPy. Meanwhile, the normalized relative intensities of this Raman peak for various PPy films are consistent with their corresponding doping levels.

Original languageEnglish
Pages (from-to)203-207
Number of pages5
JournalSynthetic Metals
Issue number1
Publication statusPublished - Jun 15 2000
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry


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