Abstract:

One-electron reduction potentials could be use as the critical-criteria of charge transfer protect and sensitization. The One-electron reduction potentials of four Tea Polyphenol derivatives using duroquinone as the reference compound have been measured with the technique of pulse radiolysis, the one-electron reduction potentials of EGCG, GCG, GC, C are-316, -325, -328,-326mV, respectively. Acccording to the criteria of charge transfer of protection and sensitization, compared with one-electron reduction potential of thymine (-1100mV), EGCG, GCG, GC and C can be used to protect efficiently the target molecule thymine from the damage induced by electron addition.

Key words: One-elecutron reduction potential, Electron affinity, Radiation protection agent, Pulse radiolysis