Photo and Photoinduced Reactions of Acridine Orange in Cyclohexanone and Cyclopentanone PDF

Keywords

photoinduced reactions, photolysis, aerobic conditions,

Abstract

Photo and photoinduced reactions of acridine orange hydrochloride hydrate in cyclohexanone and cyclopentanone were studied at 25°C under aerobic and anaerobic conditions using VIS radiation or UV/VIS radiation for photolysis. The following results were obtained: - No changes were noticed under aerobic conditions when VIS radiation was used for photolysis. - Photo reactions occurred in the absence of oxygen when VIS radiation was used for photolysis. - Photo reactions occurred in the presence of oxygen when UV radiation was used for photolysis. These reactions followed first order kinetics. - Photoinduced dark reactions following second order kinetics occured in the presence of oxygen under UV photolysis. - Dark reactions occured after addition of un-irradiated dye solution to cyclohexanone or cyclopentanone pre-irradiated with UV radiation. Some mechanistic possibilities were suggested.