Driving Force Dependence of Photoinduced Electron Transfer Dynamics of Intercalated Molecules in DNA
作者： Shunichi Fukuzumi , Mari Nishimine , Kei Ohkubo , Nikolai V. Tkachenko , Helge Lemmetyinen
DOI: 10.1021/JP035023P
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摘要: A series of acridinium, quinolinium, and phenanthridinium ions (9-substituted-10-methylacridinium (AcrR+, R = H, Pri, CH2Ph), 3-substituted-1-methylquinolinium (RQuH+, CN Br), 5-methylphenanthridinium (5-MePhen+) perchlorate salts) are shown to be intercalated into the DNA double helix from calf thymus. The one-electron reduction potentials (E0red) these intercalators have been determined in absence presence by both cyclic voltammetry second harmonic ac voltammetry. E0red values shifted a positive direction intercalation helix. oxidation potential (E0ox) ethidium bromide, which is known DNA, also intercalation. wide range thus allows us examine exact driving force dependence rates photoinduced electron transfer singlet excited state et...
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