Blitzlichtspektroskopische untersuchungen des triplettzustandes und der photolytisch gebildeten radikalkationen des 3,4-benzpyrens in wässrigen natriumdodecylsulfat-und coffeinlösungen

Abstract

When 3,4-benzopyrene is excited by a conventional flash in aqueous solutions of sodium dodecylsulfate or caffeine, radical cations are generated, in addition to triplets. The biphotonic absorption of 3,4-benzopyrene in the ground state leads to the formation of radical cations which have a longer lifetime than the triplets. The triplet decay as well as the decay of the radical cations is much slower in aqueous solutions of sodium dodecylsulfate than in caffeine solutions. The spectra of the triplets and the radical cations are presented.