Evaluation of the conductivity of the polypyrrole film via its C=C bonds stretching on surface-enhanced Raman spectrum

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Abstract

In this study, the conductivities of various polypyrrole (PPy) films were evaluated via the corresponding surface-enhanced Raman scattering (SERS) spectrum and X-ray photoelectron spectroscopy (XPS). The results indicate that the peak position of C=C bonds stretching of PPy obtained from the SERS spectrum shows more exactly both qualitatively and quantitatively representing the conductivity of PPy than the N+/N ratio or the doping level obtained from the XPS analysis does. Namely the peak position of C=C bonds stretching of PPy monotone decreases to a lower frequency side with the increase of the conductivity of PPy. Furthermore, a satisfactory correlated equation between them was obtained. On the contrary, neither the N +/N ratio nor the doping level can be qualitatively reflective on the corresponding conductivity of PPy.

Original languageEnglish
Pages (from-to)1134-1138
Number of pages5
JournalElectroanalysis
Volume15
Issue number13
DOIs
Publication statusPublished - Aug 2003
Externally publishedYes

Keywords

  • Conductivity
  • Polypyrrole films
  • Surface-enhanced Raman scattering
  • X-ray photoelectron spectroscopy

ASJC Scopus subject areas

  • Analytical Chemistry

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