Photophysical and photochemical properties of an aromatic carbonyl compound for a moderate triplet energy sensitizer studied by steady state and laser flash photolysis

Abstract

Abstract 1-Benzoyl-2-phenylacetylene (BPA) having a moderate triplet energy (65 kcal mol −1 ) was prepared, and steady state and laser photolysis techniques were conducted to characterize the photochemical features of the triplet state and the BPA ketyl radical that was formed via H-abstraction of the triplet n,π* from alcohol and phenol. The photophysical and photochemical properties of BPA similar to those of benzophenone may encourage photochemists to use it as an n , π* triplet sensitizer scheduled for triplet-energy-tuned experiments upon laser flash photolysis in solution.