Vibrational spectroscopy and picosecond dynamics of gaseous trienes and tetraenes in S1 and S2 electronic states

Hrvoje Petek; Andrew I. Bell; Ronald L. Christensen; Keitaro Yoshihara

doi:10.1117/12.58149

1 April 1992 Vibrational spectroscopy and picosecond dynamics of gaseous trienes and tetraenes in S₁ and S₂ electronic states

Hrvoje Petek, Andrew I. Bell, Ronald L. Christensen, Keitaro Yoshihara

Author Affiliations +

Proceedings Volume 1638, Optical Methods for Time- and State-Resolved Chemistry; (1992) https://doi.org/10.1117/12.58149
Event: OE/LASE '92, 1992, Los Angeles, CA, United States

Abstract

Fluorescence excitation and emission spectra of the S₁ and S₂ states of model trienes and tetraenes are measured in free jet expansions. The barriers to cis-trans isomerization in the S₁ state are < 200 cm^-1 for trienes and approximately 2000 cm^-1 for tetraenes. < 250 fs nonradiative decay of the S₂ state of tetraenes is deduced from the observed Lorentzian linewidths.

Citation Download Citation

Hrvoje Petek, Andrew I. Bell, Ronald L. Christensen, and Keitaro Yoshihara "Vibrational spectroscopy and picosecond dynamics of gaseous trienes and tetraenes in S₁ and S₂ electronic states", Proc. SPIE 1638, Optical Methods for Time- and State-Resolved Chemistry, (1 April 1992); https://doi.org/10.1117/12.58149

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