Photodegradation of SV1 in Various Solvents

The photodegradation of SV1 in various sovlents under three different light sources was studied. In n hexane, methanol, acetone, acetonitrile and aqueous solutions, the photolytic rates of SV1 were rapid, The half lives of SV1 were 0.98 h, 1.56 h, 2.11 h and 0.33 h respectively under high pressure mercury lamp. It was found that the photolytic rate of SV1in acetone is slow. The photolysis of SV1 in water could be restrained by acetone. The photoquench rate was found distinctly related to quantity of acetone. The photolytic mechanism was also discussed.