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Quenching of Triplet 1,3-Pentadienes by Their Ground State

✍ Scribed by M. Bigwood; S. Boué

Publisher
Wiley (John Wiley & Sons)
Year
2010
Weight
316 KB
Volume
82
Category
Article
ISSN
0037-9646

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✦ Synopsis

Abstract

Sensitization of neat cis or trans 1,3‐pentadienes by triplet benzophenone leads only to isomerization and dimerization. The quantum yields measured for these processes as well as the photostationary composition are strikingly different from the figures obtained in dilute solution and indicate that an interaction between the triplet and a ground state molecule can be an efficient path for triplet decay. A kinetic scheme is proposed which accounts for all of the experimental facts and suggests that an excimer is involved.

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