α-Alkyldibenzylketones included in cation exchanged faujasite type zeolites show photobehavior different from that in isotropic organic solvents. Rearrangement and disproportionation which do not contribute in solution are the major processes within the cavities of faujasites. Cation size plays a major role in controlling the pathway pursued by the primary and the secondary radical pair.
Modification of photochemical reactivity by zeolites. Norrish type I and type II reactions of ketones as photochemical probes of the interior of zeolites