The 1320-nm excited FT-Raman spectra of lightly iodine-doped trans-polyacetylene

Jin Yeol Kim*, Yukio Furukawa, Akira Sakamoto, Mitsuo Tasumi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


The FT-Raman spectra of trans-polyacetylene films doped lightly with iodine were obtained with the 1320-nm laser line. The observed Raman bands are attributed to positively charged domains created by acceptor doping. The observed Raman wavenumbers of the ν2 (CC stretch), ν3 and ν4 bands (mixed of CC stretch and CH in-plan bending) of iodine-doped form are slightly higher than those of the corresponding bands of pristine trans-polyacetylene, whereas the contrary is the case for ν1 band (C=C stretch) of iodine-doped form. In particular, these upshifts of the ν2 and ν3 bands are distinguished from the downshifts of these bands in donor doping. The origin of doping induced Raman bands is discussed in terms of solitons and polarons.

Original languageEnglish
Pages (from-to)286-290
Number of pages5
JournalMacromolecular Research
Issue number5
Publication statusPublished - 2002 Oct


  • Iodine doping
  • Raman spectroscopy
  • Trans-polyacetylene

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry


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