Time‐resolved resonance Raman study of S 1 cis ‐stilbene and its deuterated isotopomers

We present the picosecond time‐resolved resonance Raman (ps‐TR 3 ) spectra of the first excited singlet state (S 1 ) of cis ‐stilbene ( d 0 ), fully deuterated cis ‐stilbene ( d 12 ) and α,α′‐ d 2 ‐ cis ‐stilbene ( d 2 ) measured in hexane at pump and probe wavelengths 267 and 630 nm, respectively....

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Bibliographic Details
Published in:Journal of Raman spectroscopy 2003-11, Vol.34 (11), p.886-891
Main Authors: Kwok, W. M., Ma, C., Phillips, D., Beeby, A., Marder, T. B., Thomas, R. Ll, Tschuschke, C., Baranović, G., Matousek, P., Towrie, M., Parker, A. W.
Format: Article
Language:English
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Summary:We present the picosecond time‐resolved resonance Raman (ps‐TR 3 ) spectra of the first excited singlet state (S 1 ) of cis ‐stilbene ( d 0 ), fully deuterated cis ‐stilbene ( d 12 ) and α,α′‐ d 2 ‐ cis ‐stilbene ( d 2 ) measured in hexane at pump and probe wavelengths 267 and 630 nm, respectively. The main observation is that in the lower wavenumber region the spectra are dominated by a second‐order overtone progression originating from a 229 cm −1 fundamental band for the S 1 d 0 cis ‐stilbene. The observed low‐wavenumber modes of the excited cis ‐stilbene are substantially more resonantly enhanced than the modes around 1600 cm −1 . Copyright © 2003 John Wiley & Sons, Ltd.
ISSN:0377-0486
1097-4555
DOI:10.1002/jrs.1070