β Scribed by Chang-Yuan Lu; Wen-Feng Wang; Wei-Zhen Lin; Zhen-Hui Han; Si-De Yao; Nian-Yun Lin
No coin nor oath required. For personal study only.
Using 248 nm laser flash photolysis, it has been demonstrated that the neutral oxidized radical of riboflavin (RF(-H) x ) resulting from rapid deprotonation of the radical cation (RF xq ) can be generated via monophotonic ionization when it is directly excited with a 248 nm laser and via oxidation by the SO 4 xy radical in aqueous solution. The RF(-H) x or RF xq reacts with both purine nucleotides and pyrimidine nucleotides via electron transfer to give the radical cations of nucleotides. These results suggest that the reactions of oxidized riboflavin radical might be involved in DNA photosensitization in vivo and in vitro.
π SIMILAR VOLUMES
The photolysis of phenylazotriphenyl methane (PAT) in dichloromethane and acetonitrile solution at and at 23Β‘C results in the j inc \ 347 nm formation of triphenyl methyl (trityl) radicals and trityl ions. The quantum yields in dichloromethane solution are and Trityl '(Ph ions are assumed to be for
A laser photolysis-long path laser absorption (LP-LPLA) experiment has been used to determine the rate constants for H-atom abstraction reactions of the dichloride radical anion (Cl 2 Οͺ ) in aqueous solution. From direct measurements of the decay of Cl 2 Οͺ in the presence of different reactants at p
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