Charge Separation in DNA via Consecutive Adenine Hopping
作者： Tadao Takada , Kiyohiko Kawai , Xichen Cai , Akira Sugimoto , Mamoru Fujitsuka
DOI: 10.1021/JA035730W
关键词:
摘要: Charge transfer in DNA is of current interest because the involvement charge oxidative damage and electronic molecular devices. We have investigated separation process via consecutive adenine (A)-hopping mechanism using laser flash photolysis conjugated with naphthaldiimide (NDI) as an electron acceptor phenothiazine (PTZ) a donor. Upon 355-nm excitation NDI, recombination between NDI PTZ was observed. The yields A-hopping were slightly dependent upon number A bases two chromophores, while rate strongly distance. charge-separated state persisted over 300 μs when separated from by eight bases. Furthermore, constant determined to be 2 × 1010 s-1 analysis yield depending on ...
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