The stilbene analogues tetraphenylethylene and bi-4H-cyclopenta [def] phenanthren-4-ylidene (BPH) prove to be useful models for studying photoisomerization reactions in olefins with freely rotating and rigid chromophores. In the former, the rotation of the phenyl rings follows a complex isomerization pathway from one of the two isoenergetic enantiomers to the 90° twisted conformer. The isomerization pathway for BPH is much simpler since only idealized rotation about the double bond is possible.
|Original language||English (US)|
|Number of pages||5|
|Journal||Journal of Photochemistry and Photobiology A: Chemistry|
|State||Published - May 30 1997|
ASJC Scopus subject areas
- Chemical Engineering(all)
- Physics and Astronomy(all)