Chemiluminescence of diphenoyl peroxide electron transfer revealed by laser spectrophotometric analysis

The reaction of diphenoyl peroxide with a series of electronically excited electron donors was investigated by nanosecond laser spectroscopy. The results indicate that electron transfer from the excited state to the peroxide is the predominant reaction. The radical ions formed in this process may diffuse from the solvent cage or annihilate to regenerate the excited state. Kinetic data is presented that show an analogous process occurs for ground state electron donors resulting in chemilumine escence by the chemically initiated electron exchange luminescence (CIEEL) mechanism.