The Raman spectra of trans-polyacetylene films doped heavily with electron donor (Na) and acceptors (iodine, SO3, HClO4 FeCl3) were studied with excitation wavelengths between 488.0 and 1320 nm. The observed Raman bands are attributed to negatively and positively charged domains created by donor- and acceptor-doping, respectively. The observed large wavenumber dispersion of the C=C stretching vibration (v1 band) of charged domains suggests a broad distribution of localization lengths in the charged domains. The charged domains generated by doping are localized over not more than eleven conjugated C=C bonds. The observed wavenumber of the v2 band (CC stretch) of the acceptor-doped forms is higher than that of the corresponding band of pristine trans-poylacetylene, whereas the contrary is the case for the donor-doped forms.
|ジャーナル||Korea Polymer Journal|
|出版ステータス||Published - 1998 12月 1|
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