Hole transfer through DNA monitored by transient absorption of phenothiazine radical cation

被引：18

作者：

Kawai, K ^{[1
]}

Takada, T ^{[1
]}

Tojo, S ^{[1
]}

Majima, T ^{[1
]}

机构：

[1] Osaka Univ, Inst Sci & Ind Res SANKEN, Ibaraki, Osaka 5670047, Japan

来源：

TETRAHEDRON LETTERS | 2002年 / 43卷 / 01期

关键词：

DNA; hole transfer; pulse radiolysis; phenothiazine;

D O I：

10.1016/S0040-4039(01)02064-0

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

The hole transfer through DNA was monitored by the transient absorption of radical cation of phenothiazine (Ptz(+.)). The occurrence of hole transfer from G(+.) generated in DNA to Ptz was observed in the time range of 100 mus. The hole transfer to Ptz was significantly suppressed by introducing oxG as a hole trap in DNA, and the trapping reaction of oxG(+.) by water was suggested to occur with the rate raster than similar to 10(5) s(-1). (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：89 / 91

页数：3

共 21 条

[1] LASER PHOTOIONIZATION OF PHENOTHIAZINE IN ALCOHOLIC AND AQUEOUS MICELLAR SOLUTION - ELECTRON-TRANSFER FROM TRIPLET-STATES TO METAL-ION ACCEPTORS [J].