Pericyclic photochemical ring-opening reactions are complete in picoseconds: a time-resolved UV resonance Raman study

Philip J. Reid; Stephen J. Doig; Richard A. Mathies

doi:10.1117/12.44217

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1 June 1991 Pericyclic photochemical ring-opening reactions are complete in picoseconds: a time-resolved UV resonance Raman study

Philip J. Reid; Stephen J. Doig; Richard A. Mathies

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Proceedings Volume 1432, Biomolecular Spectroscopy II; (1991) https://doi.org/10.1117/12.44217
Event: Optics, Electro-Optics, and Laser Applications in Science and Engineering, 1991, Los Angeles, CA, United States

Abstract

The kinetics of the photochemical ring openings of 1,3-cyclohexadiene (CHD), 1,3,5- cyclooctatriene (COT) and ((alpha) -PHE) were determined by picosecond, time-resolved UV resonance Raman spectroscopy. The time evolution of the photoproduct ethylenic intensity demonstrates that the photolysis of CHD produces ground state cis-hexatriene in 8 +/- 1 ps. Similarly, the photoproducts of COT and (alpha) -PHE appear in 12 +/- 2 ps and 11 +/- 2 ps, respectively. The similar ground state photoproduct formation times of these reactions indicates that the $OM10 ps timescale is a general feature of photochemical electrocyclic ring-opening reactions.

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Philip J. Reid, Stephen J. Doig, and Richard A. Mathies "Pericyclic photochemical ring-opening reactions are complete in picoseconds: a time-resolved UV resonance Raman study", Proc. SPIE 1432, Biomolecular Spectroscopy II, (1 June 1991); https://doi.org/10.1117/12.44217

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