Exciplex and radical ion intermediates in electron-transfer reactions: solvent effect on the photo-oxygenation of 1,4-dimethylnaphthalene sensitized by 9,10-dicyanoanthracene
Abstract
The 9,10-dicyanoanthracene-sensitized photo-oxygenation of 1,4-dimethylnaphthalene is shown to depend on solvent polarity. Radical ion pair and singlet exciplex are suggested to be intermediates in this photochemical reaction. Mechanisms consistent with the effects of solvent polarity are proposed.