Electronic excitation energy transfer between molecules of carbocyanine dyes in complexes with DNA

被引：6

作者：

Pronkin, P. G. ^{[1
]}

Tatikolov, A. S. ^{[1
]}

机构：

[1] Russian Acad Sci, Emanuel Inst Biochem Phys, Moscow 119334, Russia

来源：

HIGH ENERGY CHEMISTRY | 2009年 / 43卷 / 06期

关键词：

CYANINE DYES; FLUORESCENCE; INTERCALATION; LIFETIMES;

D O I：

10.1134/S0018143909060101

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Electronic excitation energy transfer has been carried out between molecules of carbocyanine dyes bound noncovalently to DNA. 3,3',9-Triethyl-5,5'-dimethyloxacarbocyanine iodide was used as an energy donor and 3,3'-diethylthiacarbocyanine iodide as an acceptor dye. In this process, the band belonging to the donor is observed in the fluorescence excitation spectrum of the acceptor. Donor fluorescence quenching by the acceptor in the presence of DNA was studied. The results of the experiments are discussed in terms of the Dye-DNA stoichiometric complex formation and with respect to concentrating the dyes in the microphase (pseudophase) of the biopolymer.

引用

页码：471 / 479

页数：9

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