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The Raman spectra of a polyacetylene film doped heavily with SO 3 have been measured with excitation wavelengths between 488.0 and 1064 nm. Observed Raman bands are attributed to positively charged domains generated by SO 3 doping. Doping-induced changes in the Raman spectra are summarized as follows. (1) The ν 1 and ν 3 bands observed in the region of 1575-1485 and...
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