RAMAN-SCATTERING OF HIGHLY CONDUCTING POLYACETYLENE

We present the Resonance Raman Scattering spectra of highly conducting polyacetylene samples synthetized in different groups by using differ ent methods: Shirakawa or S-(CH)(X), Naarman or N-(CH)(X) and Tsukamot o or nu-(CH)(X). Different excitation wavelengths have been used to st udy the different samples whose spectra have been then analyzed theore tically in the framework of the double distribution model. Results obt ained by this analysis are discussed in relation with those carried ou t in NMR on the same films and with the values of the conductivity aft er iodine doping of these samples.