Ultrafast absorption changes both in the visible and near-infrared regionsdue to photoinduced electron transfer reactions of dicyanovinylstyrylpyridinium tetraphenylborate

Ultrafast dynamics of photoinduced electron transfer reaction and dimer rad ical cation formation of ion pair charge transfer complexes between dicyano vinylstyrylpyridinium cation and retraphenylborate anion were studied at ro om temperature in less polar solvents by femtosecond laser flash photolysis . Transient absorptions were observed both in the visible and near-infrared regions. They showed very rapid rise in less than one picosecond, which wa s limited by the time resolution of our flash photolysis system.