ELECTRON-TRANSFER FROM TRIPLET THYMINE AND THYMIDINE TO LIPOIC ACID

Authors
LIAN ZR YAO SD WANG WF LUO J ZHANG JS LIN NY
Citation
Zr. Lian et al., ELECTRON-TRANSFER FROM TRIPLET THYMINE AND THYMIDINE TO LIPOIC ACID, Journal of photochemistry and photobiology.B, Biology, 20(2-3), 1993, pp. 113-116
Citations number
19
Categorie Soggetti
Biophysics,Biology
Journal title
Journal of photochemistry and photobiology.B, Biology → ACNP
ISSN journal
10111344
Volume
20
Issue
2-3
Year of publication
1993
Pages
113 - 116
Database
ISI
SICI code
1011-1344(1993)20:2-3<113:EFTTAT>2.0.ZU;2-1
Abstract
Electron transfer from the triplet excited state of thymine or thymidi ne to the disulphide compound lipoic acid (RSSR) was studied using KrF laser flash photolysis (248 nm, 20 ns). The electron transfer reactio n rate constants, measured at 310 nm, were determined to be 1.3 X 10(1 0) M-1 s-1 and 6.9 X 10(9) M-1 s-1 for thymine and thymidine respectiv ely. The transient absorbance at 400 nm in the presence of the quenche r is attributed to the anion radical of lipoic acid.