Photoactivity of cationic phthalocyanine derivative of zinc(II)-loaded natural zeolites

Phthalocyaninatozinc(II) with cationic substituents was adsorbed on natural zeolites, clinoptiolite and mordenite, while it was not adsorbed on synthetic zeolites. The complex might be intercalated into a small amount of clay contained in the natural zeolites as an impurity. The complex-loaded zeolites acted as a sensitizer for photooxidation of bilirubin ditaurate in an aqueous solution.