Theoretical analysis of absorption and resonant Raman scattering spectra of trans(CH)x

Detailed and fully consistent calculations of absorption and resonant Raman scattering spectra from trans-(CH)x have been performed by using a bimodal Gaussian distribution centered on short and long segments which form the trans-(CH)x chain. Such results are in good agreement with the experiments. With the use of our model it is also possible to account for several properties of trans-polyacetylene: the conjugation length of the segments which constitute the chain (for undoped and doped samples), isomerization processes, and the history of the sample under investigation. © 1984 The American Physical Society.