Photochemical Cleavage of DNA With Phosphorus(V)porphyrin Derivatives

Takao Saito Division of Molecular Engineering, Graduate School of Engineering, Kyoto University, Kyoto, 606-01, Japan

Masanori Kitamura Division of Molecular Engineering, Graduate School of Engineering, Kyoto University, Kyoto, 606-01, Japan

Motomasa Tanaka Division of Molecular Engineering, Graduate School of Engineering, Kyoto University, Kyoto, 606-01, Japan

Minoru Morimoto Division of Molecular Engineering, Graduate School of Engineering, Kyoto University, Kyoto, 606-01, Japan

Hiroshi Segawa Division of Molecular Engineering, Graduate School of Engineering, Kyoto University, Kyoto, 606-01, Japan

Takeo Shimidzu Division of Molecular Engineering, Graduate School of Engineering, Kyoto University, Kyoto, 606-01, Japan

Abstract

Photocleavage of double-stranded circular DNA was examined using a phosphorus(V)porphyrin derivative. The P(V)porphyrin derivative cleaved the DNA upon visible light irradiation both in air and in argon. Photoreactions through an indirect process with singlet oxygen and a direct electron transfer process were suggested.

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Photochemical Cleavage of DNA With Phosphorus(V)porphyrin Derivatives

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Photochemical Cleavage of DNA With Phosphorus(V)porphyrin Derivatives

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