A picosecond time-resolved resonance Raman study of S1 cis-stilbene

P. Matousek, A. W. Parker, D. Phillips, G. D. Scholes, W. T. Toner, M. Towrie

Research output: Contribution to journalArticle

27 Scopus citations

Abstract

The time-resolved resonance Raman (TR3) spectrum of S1 cis-stilbene in n-hexane is presented. Raman bands are observed at 243, 475, 742, 977, 1200 and 1440 cm-1. Their positions and relative intensities suggest that these belong to a high-order overtone progression (up to the fifth order) originating from the 243 cm1- fundamental. This observation implies a large difference between S1 and the resonant Sn states in the equilibrium nuclear coordinate corresponding to the 243 cm-1 mode, with displacement Δ ∼ 12. Ground and excited state equilibrium geometries and frequencies are determined using ab initio molecular orbital calculations.

Original languageEnglish (US)
Pages (from-to)56-62
Number of pages7
JournalChemical Physics Letters
Volume278
Issue number1-3
DOIs
StatePublished - Oct 24 1997
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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