Picosecond resonance Raman spectra of the S 1 states of trans-stilbene and its torsionally hindered analog 2-phenylindene in solution show that the vibrational cooling times in these two systems are similar. Anti-Stokes scattering from high frequency modes is observed for the first time and provides
Picosecond dynamics of intramolecular vibrational redistribution in the S2 state of jet-cooled azulene
β Scribed by David R. Demmer; James W. Hager; Gary W. Leach; Stephen C. Wallace
- Publisher
- Elsevier Science
- Year
- 1987
- Tongue
- English
- Weight
- 481 KB
- Volume
- 136
- Category
- Article
- ISSN
- 0009-2614
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β¦ Synopsis
We report the observation of quantum interference effects in the energy-resolved fluorescence decays of the second excited singlet state ofjet-cooled azulene. The results are analyzed and discussed in terms of a real-time view of intramolecular vibrational relaxation.
π SIMILAR VOLUMES
The S I state of jet-cooled 4-(N,N-dimethylamino)-4'-cyanostilbene (DCS) was studied by picosecond fluorescence spectroscopy. The line structure of the S O -\* Sl-excitation spectrum is a superposition of transitions characteristic of isolated trans-sti~bene and the dimethylamino group. Rotational c
The first application of picosecond polarization spectroscopy to probe gas phase intramolecular relaxation under collision free conditions is reported. This technique is a sensitive probe of molecular rotation and when applied to trans-stilbene vapor at 2OO'C an exponential decay in the anisotropy w
The S& fluorescence excitation spectra of xanthione (XT) and azulene (AZ) complexed with 1 or 2 molecules of the C, to Cl0 n-alkanes and the C, to C, perfluoro-n-alkanes have been measured. The 1: I complexes exhibit microscopic solvent shifts, A& which are larger for the alkanes than the correspond
The fluorescence excitation spectrum of pyrene obtained in a supersonic jet for the S ,\_,-+Sz transition shows a complicated structure due to the interaction of discrete levels of S, with the quasi-continuous levels belonging to S,. The intensity distribution pattern in this region has been evaluat
This work is concerned with the exploration of the interaction mechanisms relevant to the intramolecular vibrational redistribution behavior of E2s smgle vibrational levels from S, benzene in the channel-three region. It is demonstrated that the contribution of parallel-type Coriolis interactions is