Proton-induced electron-transfer reaction from triplet methoxynaphthalenes to benzophenone via triplet exciplex

A laser flash photolysis study at 355 nm has been carried out on acetonitrile-water (4:1 v/v) mixtures of the methoxy naphthale-benzophenone-H 2 SO 4 system. It is found that the proton-assisted photoionization reaction of 2-methoxynaphtalenes (ROMe) produced by triplet sensitization of benzophenone (BP) effectively occurs to produce c corresponding methoxynaphthlene cation radical (ROMe +. ) and benzophenone ketyl radical (>COH)