Author/Authors :
Mulazzi، نويسنده , , E. and Ripamonti، نويسنده , , A. and Very، نويسنده , , J. and Dulieu، نويسنده , , B. and Faulques، نويسنده , , E. and Lefrant، نويسنده , , S.، نويسنده ,
Abstract :
We present experimental optical absorption and Raman data of PPV and PPP. Theoretical calculations of the band shapes of absorption and Raman spectra of both polymers are reported. In particular the dependence of the Raman band intensities as function of the excitation wavelengths is theoretically accounted for, in very good agreement with experimental data. These features together with the absorption band shapes can be simulated if a distribution of conjugated segments of different lengths is introduced in the calculation.
