Selective solid state photooxidant.
Irradiation of biphenyl encapsulated in the cavities of a NaZSM-5 zeolite framework has been reported to result in the formation of an extremely long-lived radical cation. Here, we show that such zeolite encapsulated radical cations can act as irreversible one-electron oxidants for simple alkenes and dienes, in a solid-state analogue to solution-phase cosensitization. Compared to the well-known semiconductor photooxidizers, such as titanium dioxide, the NaZSM-5 zeolite-based solid photooxidants exhibit enhanced selectivity based on oxidation potential, molecular size and shape, and Lewis base character.
Morkin
Tracy L
TL
Department of Chemistry, Columbia University, 3000 Broadway, New York, NY 10027, USA.
Turro
Nicholas J
NJ
Kleinman
Mark H
MH
Brindle
Cheyenne S
CS
Griffiths
Kirsten
K
Kramer
Wolfgang H
WH
Gould
Ian R
IR