Photosensitized Geometric Isomerization of Alloocimene. The Triplet Torsitional Potential Surface of a Conjugated Ttriene

Article abstract of DOI:10.1021/j150614a028

The photostationary state compositions and quantum yields of the benzophenone-sensitized geometric isomerization of alloocimene, a model triene, have been studied in detail.The results arte discussed in terms of two reaction schemes for four isomer systems (one for steady-state concentrations of isomers and one for partially eequilibrated isomeric triplets).A triplet torsional potential surface of the triene is also presented which was constructed to reflect the photochemical properties of the triene.From quenching data, the average lifetime of an alloocimene triplet at room temperature was determined to be 2E-7 s.