Excited state electron and energy transfer of a highly fluorescent heterocyclic dye: a laser flash photolysis study of 2,5-dimethyl-3,6-diphenylpyrrolo[3,4-c]pyrrole-1,4-dione

Abstract

The triplet and singlet state properties of the title compound are reported: nitroxyl free radicals and oxygen enhance the triplet yield significantly; electron transfer from the singlet excited state to methyl viologen in acetonitrile produced the corresponding free radicals which recombine with second-order kinetics.