Abstract
We measured picosecond transient Stokes and anti-Stokes Raman spectra of S1 trans-stilbene in hexane. We observed 18 vibrational modes in the Stokes spectra and two modes in the low wave number anti-Stokes spectra. The band positions and band shapes of the transient Raman spectra suggest a distribution of molecular conformers in S1 having different single and double bond strengths. The band intensities suggest a redistribution of electron density in Sn that is concentrated in the olefinic region and in the ortho and meta region of the phenyl rings.
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