Abstract
We present a joint experimental and theoretical investigation of the optical absorption spectra of phenylene vinylene oligomers. The vibronic structure, which is clearly observed in the experimental spectra, is well described by a simple model based on the Frank-Condon approximation but requires the use of at least two effective modes coupled to the electronic states. Using a fitting procedure, we deduce the displacement of the 1Bu excited state potential energy curve relative to that of the ground state and compare it to the results of recent Hartree-Fock semi-empirical calculations. Such information is of prime importance in the description of the frequency-dependent linear as well as nonlinear optical responses.
Original language | English (US) |
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Pages (from-to) | 425-432 |
Number of pages | 8 |
Journal | Chemical Physics Letters |
Volume | 247 |
Issue number | 4-6 |
DOIs | |
State | Published - Dec 29 1995 |
Externally published | Yes |
Bibliographical note
Generated from Scopus record by KAUST IRTS on 2019-11-27ASJC Scopus subject areas
- General Physics and Astronomy
- Physical and Theoretical Chemistry