One and two electron transfer pathways in the photoreduction of flavin

Abstract

The stoichiometry of flavin photoreduction was studied by flash photolysis, monitoring the conversion of photoexcited flavin to one-electron and two-electron reduction products and following their fate. The reactivity of the photoexcited states of flavin in one-electron transfer reactions was determined, the reasons for differences between them are discussed and the mode of radical decay was investigated in dependence of the photosubstrate structure. The nature of the two-electron transferring photosubstrate was revealed in order to define the range of the two reduction pathways. © 1982 IUPAC