Al-Hassan, L.A. and Al-Amro, F.S.
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.