✦ LIBER ✦
Inefficient “one-way” isomerization of cis-styrylferrocene. Suppression of cis—trans isomerization by heavy-atom-induced intersystem crossing
✍ Scribed by Tatsuo Arai; Yasushi Ogawa; Hirochika Sakuragi; Katsumi Tokumaru
- Publisher
- Elsevier Science
- Year
- 1992
- Tongue
- English
- Weight
- 411 KB
- Volume
- 196
- Category
- Article
- ISSN
- 0009-2614
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✦ Synopsis
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.