Original scientific paper

Effects of high-intensity UV radiation on isolated and DNA-intercalated ethidium bromide

E. Keskinova ; Institute of Solid State Physics, Bulgarian Academy of Sciences, Tzarigradsko Chaussee blvd.72, BG-1784, Sofia, Bulgaria
D. Angelov ; Institute of Solid State Physics, Bulgarian Academy of Sciences, Tzarigradsko Chaussee blvd.72, BG-1784, Sofia, Bulgaria
Sv. Angelova ; Institute of Solid State Physics, Bulgarian Academy of Sciences, Tzarigradsko Chaussee blvd.72, BG-1784, Sofia, Bulgaria
Z. Shaqiri ; Institute of Solid State Physics, Bulgarian Academy of Sciences, Tzarigradsko Chaussee blvd.72, BG-1784, Sofia, Bulgaria
A. Veseli ; Faculty of Natural and Mathematical Sciences, 39000 Prishtina, Yugoslavia

Abstract

High-intensity picosecond laser flash photolysis has been used for investigating ethidium bromide (EtBr). The quantum yield of primary photoproducts as a function of the laser intensity has been obtained. DNA intercalated EtBr and water solutions of EtBr have been investigated. The results have been compared. They show that two-photon processes are predominantly responsible for generation of hydrated electron (eaq-). The primary processes of DNA photosensitization have also been discussed.

Keywords

ethidium bromide; DNA intercalated; quantum yield; two-photon processes; photosensitizer

Hrčak ID:

299940

URI

https://hrcak.srce.hr/299940

Publication date:

1.3.1998.

Article data in other languages: croatian

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