Abstract
By means of nanosecond laser flash photolysis it has been found that the interaction between triplet benzophenone ( 3BP ∗) and naphtholate anions (NpO −) is not triplet energy transfer but electron transfer to yield the benzophenone anion (BP −·) and naphthoxy (NpO ·) radicals in acetonitrile-H 2O (4:1 v/v) at 295 K. From the kinetic parameters for quenching of 3BP ∗ by NpO − and quantum yields for the formation of BP −· and NpO ·, it was found that the efficiency for electron transfer between 3BP ∗ and NpO − is unity due to the triplet spin-multiplicity of radical pairs.
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