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Factors distinguishing one-way and two-way photoisomerization of aromatic olefins. Effects of substituents on triplet energy surfaces of 8-fluoranthenylethylenes

Authors
Journal
Chemical Physics Letters
0009-2614
Publisher
Elsevier
Publication Date
Volume
162
Issue
3
Identifiers
DOI: 10.1016/0009-2614(89)85126-7
Disciplines
  • Physics

Abstract

Abstract 8-fluoranthenylethylenes (8-FlCHCHR) behave as a boundary case distinguishing between one-way and two-way isomerizations. Introduction of an alkyl group (R = t-Bu) and an aryl group (R = Ph) on the β-ethylenic carbon leads to the one-way and two-way isomerization, respectively. Their triplet energy surfaces are proposed on the basis of measurements of the quantum yields, photostationary isomer ratios, and T-T absorption spectra.

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