TY - JOUR
T1 - A picosecond time-resolved resonance Raman study of S1 cis-stilbene
AU - Matousek, P.
AU - Parker, A. W.
AU - Phillips, D.
AU - Scholes, G. D.
AU - Toner, W. T.
AU - Towrie, M.
N1 - Funding Information:
We should like to thank I.R. Gould and S.M. Tavender for contributions to this work and D.L. Phillips, T.L. Gustafson, R.E. Hester and K. Iwata for valuable comments during the preparation of this article. This work was supported by EPSRC. GDS gratefully acknowledges support of the Ramsay Memorial Fellowship Trust.
PY - 1997/10/24
Y1 - 1997/10/24
N2 - 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.
AB - 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.
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U2 - 10.1016/S0009-2614(97)01000-2
DO - 10.1016/S0009-2614(97)01000-2
M3 - Article
AN - SCOPUS:0031585456
SN - 0009-2614
VL - 278
SP - 56
EP - 62
JO - Chemical Physics Letters
JF - Chemical Physics Letters
IS - 1-3
ER -