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Inefficient “one-way” isomerization of cis-styrylferrocene. Suppression of cis—trans isomerization by heavy-atom-induced intersystem crossing

Authors
Journal
Chemical Physics Letters
0009-2614
Publisher
Elsevier
Publication Date
Volume
196
Identifiers
DOI: 10.1016/0009-2614(92)85944-6
Disciplines
  • Chemistry

Abstract

Abstract Substitution of a phenyl group in stilbene by a ferrocenyl group remarkably suppresses photochemical isomerization between the cis- and trans-isomers due to acceleration of the deactivation of the cis-triplet to the ground state by the heavy atom effect, prior to the one-way type isomerization in the triplet state. This modification of the stilbene chromophore provides a new mode for controlling photoisomerization and a way for protecting conjugated chain molecules from photodegradation.

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