Magnetic field effects on the dynamic behavior of a radical pair as studied by a sub-nanosecond laser flash photolysis technique

Authors
Wakasa, M Hayashi, H
Citation
M. Wakasa et H. Hayashi, Magnetic field effects on the dynamic behavior of a radical pair as studied by a sub-nanosecond laser flash photolysis technique, CHEM P LETT, 327(5-6), 2000, pp. 343-350
Citations number
20
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
CHEMICAL PHYSICS LETTERS
ISSN journal
00092614 → ACNP
Volume
327
Issue
5-6
Year of publication
2000
Pages
343 - 350
Database
ISI
SICI code
0009-2614(20000915)327:5-6<343:MFEOTD>2.0.ZU;2-Z
Abstract
The hydrogen abstraction reaction of triplet 4-methoxy-benzophenone with th iophenol at 265 K was studied by a sub-nanosecond laser flash photolysis te chnique in the absence and presence of a magnetic field of 1.75 T. The deca y rate of the generated radical pair at zero field was found to be 1.1 X 10 (9) s(-1) and that at 1.75 T to be 1.8 X 10(9) s(-1). The observed magnetic field effect can be explained by the acceleration of the triplet-singlet s pin conversion process due to the Delta g mechanism. (C) 2000 Published by Elsevier Science B.V.