Author/Authors :
Matousek، نويسنده , , P. and Parker، نويسنده , , A.W. and Toner، نويسنده , , W.T. and Towrie، نويسنده , , M. and de Faria، نويسنده , , D.L.A. and Hester، نويسنده , , R.E. and Moore، نويسنده , , J.N.، نويسنده ,
Abstract :
Anti-Stokes resonance Raman spectra of S1 trans-stilbene have been measured for vibrational wavenumbers up to 1570 cm−1. Trans-stilbene in n-hexane was excited at 290–310 nm and probed at 580–620 nm, respectively, with 8 ps resolution. All the dominant bands seen in the Stokes spectrum of the S1 state are also seen in the anti-Stokes spectrum. Some anti-Stokes bands, notably those at 1570, 1240, 1180, 980, 720 and 285 cm−1, decrease markedly in relative intensity on a 2~ 10 ps timescale, displaying dynamics similar to those observed for the changes in the band position and bandwidth of several features in the Stokes spectrum.
