✦ LIBER ✦

Subpicosecond anisotropic CARS studies of vibrational mode-selective photoexcitation and relaxation of trans-stilbene. First few picoseconds

✍ Scribed by A.P. Shkurinov; N.I. Koroteev; G. Jonusauskas; C. Rullière

Publisher: Elsevier Science
Year: 1994
Tongue: English
Weight: 882 KB
Volume: 223
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(94)00500-1

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✦ Synopsis

Sub-picosecond coherent anti-Stokes Raman scattering (CARS) spectra of singlet excited trans-stilbene ( RB ) in heptane have been obtained using UV excitation and CARS probe for the O-5 ps time range. The excited state CARS spectra of tSB in heptane exhibits mode-selective dynamics. Different temporal behaviors of the three investigated S, Raman bands ( 118 1,1242 and 1565 cm-r) are observed. These results are discussed with respect to possible role of vibrational energy redistribution and associated conformational changes.