Abstract
Abstract The solvent-induced broadening mechanisms are considered in the calculation of resonance Raman excitation profiles (RREP) for the ν1 and ν2 vibrational modes of lycopene. The broadening mechanisms are classified into two groups: Inhomogeneous broadening due to a distribution of the 0-0 transition energies and solvent-induced homogeneous broadening due to coupling with low-frequency solvent-solute interactions. The conventional sum-over-states formula for RREP is transformed to a formally equivalent expression in the time domain. The results show that the homogeneous broadening dominates the RREP of lycopene.
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