Raman spectra of polypyrrole and its 2,5-13C-substituted and C-deuterated analogues in doped and undoped states

Y. Furukawa, S. Tazawa, Y. Fujii, I. Harada*

*この研究の対応する著者

研究成果: Article査読

271 被引用数 (Scopus)

抄録

Raman and optical absorption spectra were studied on electrochemically polymerized polypyrrole in as-polymerized doped (highly conductive), partially undoped and substantially undoped 'neutral' (insulating) states. Vibrational assignments were made on the basis of the data of 2,5-13C-substituted and C-deuterated derivatives. The Raman result of the neutral polymer is consistent with the α,α′-linked all-s-trans coplanar and conjugated structure. In the as-polymerized polymer there exist both radical cation and dication in which the bond orders of C3C4 and interring CC are increased as compared to those in the neutral polymer. The structural distortion in the dication is greater than that in the radical cation. Changes in optical absorption and Raman spectra during reduction (undoping) were explained by the conversions of the dication to the radical cation and the radical cation to the neutral species.

本文言語English
ページ(範囲)329-341
ページ数13
ジャーナルSynthetic Metals
24
4
DOI
出版ステータスPublished - 1988 6月
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • 材料力学
  • 機械工学
  • 金属および合金
  • 材料化学

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