Microenvironment dependence of vibrational relaxation in p-methyl acetophenone

Abstract

The Raman band shape analysis and vibrational relaxation studies of the CO stretching mode of vibration of p-methyl acetophenone reveals that macroscopic considerations are not sufficient to analyse the Raman anisotropy shift and the linewidth of the isotropic component observed in complex molecular systems. The band shape analysis was therefore attempted at a microscopic level by taking into account the concept of microenvironment. The solvent dependent study of the anisotropy shift shows that the repulsive potential may be playing a major role in the vibrational relaxation process.