STUDIES ON MECHANIS OF PHOTOSENSITIZED ISOMERIZATION OF NORBORNADIENE DERIVATIVES

摘要

Using acridine dyes as sensitizers,the photoisomerization of threenorbornadiene derivatives was investigated.The valence isomerization of nor-bornadiene derivatives(Ⅰ_a,Ⅰ_b,Ⅰ_c)gave their corresponding isomers of quadri-cyclane(Ⅱ_a,Ⅱ_b,Ⅱ_c)operating with relatively high efficiency in an electrontransfer mode.Their quantum yields of isomerization were determined and thereaction mechanism was discussed.