Zoekopdracht:
faculteit: "FNWI" en publicatiejaar: "1992"
| Auteurs | B.E. Kohler, T. Shaler, W.J. Buma | | Titel | The 2 1Ag state of isolated cis-trans-1,3,5,7-octatetraene: two-color resonance enhanced two-photon ionization studies |
| Tijdschrift | Journal of Chemical Physics |
| Jaargang | 96 |
| Jaar | 1992 |
| Nummer | 1 |
| Pagina's | 399-407 |
| ISSN | 00219606 |
| Faculteit | Faculteit der Natuurwetenschappen, Wiskunde en Informatica |
| Instituut/afd. | FNWI: Van 't Hoff Institute for Molecular Sciences (HIMS) |
| Trefwoorden | polyenes; isomerization; photophysics |
| Basisclassificatie | 33.33 ; 35.16 |
| Samenvatting | Vibrationally resolved 1 1Ag2 1Ag excitation spectra and decay times for cis,trans-1,3,5,7-octatetraene seeded in a supersonic He expansion have been measured by two-color resonance enhanced two-photon ionization spectroscopy. The excitation energy of the 1 1Ag2 1Ag 0-0 band (29 035 cm-1 ) is ~6500 cm-1 lower than the 35 484 cm-1 excitation energy of the 1 1Ag1 1Bu 0-0 band. The intensity pattern of the vibronic development of this spectrum is qualitatively similar to the pattern observed previously in solid state experiments. However, a detailed analysis of the vibrational structure reveals that the electronic structure of the 2 1Ag state is more susceptible to external perturbation than previously suspected. The decay times measured for vibronic levels in the 2 1Ag state decrease with increasing vibrational energy, most dramatically for vibrational energies 1200 cm-1 and higher. This indicates the increasing importance of a nonradiative decay channel which is most reasonably associated, at least in part, with cis-trans isomerization in the 2 1Ag state. The Journal of Chemical Physics is copyrighted by The American Institute of Physics. |
| Opmerkingen | Erratum: Journal of chemical physics, vol.96(1992):no.10, pag.7875 |
| Soort document | Artikel |
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