Selected papers

Photochemistry of Benzophenone in Micelles. Formation and Decay of Radical Pairs

J.C. Scaiano, E.B. Abuin and L.C. Stewart, "Photochemistry of Benzophenone in Micelles. Formation and Decay of Radical Pairs", J. Am. Chem. Soc., 104, 5673‑5679 (1982). Photochemistry of Benzophenone in Micelles.  Formation and Decay of Radical Pairs
The photoreduction of benzophenone triplets in micellar solution leads to the generation of isolated radical pairs, whose behavior resembles that of biradicals. Radical-pair decay is controlled by intersystem crossing and by radical exit from the micelle.

http://pubs.acs.org/doi/abs/10.1021/ja00385a020