Dynamic process of the photo-chemically produced flavin radicals in a neutral micelle studied by a magnetic field effect

The dynamics of the free radicals generated from the photo-induced electron transfer reaction from the phenyl ether group of Triton X-100 micelle to flavin derivatives has been studied by transient absorption (TA) spectra and its magnetic field effect (MFE). By the MFE on TA spectrum, one can selectively observe radical species avoiding the overlap of the TA signal of the triplet state. By virtue of this, the protonation kinetics from the anion radical to the neutral radical has been able to be analyzed. The dynamic process of the anion radicals depends on the hydrophobic character of flavin derivatives.