The magnetic field dependence of the lifetime of the benzophenone ketyl-SDS-derived radical pair in SDS micellar solution is divided into three regions. In a low magnetic field ( ~0.3 T) the lifetime increases steeply, it exhibits a square dependence on the magnetic field strength between 0.3 and 2
Two-step laser excitation fluorescence study of the magnetic field effect on the hydrogen abstraction reaction of anthraquinone in SDS micellar solution
โ Scribed by Yoshifumi Tanimoto; Katsuko Shimizu; Michiya Itoh
- Publisher
- Elsevier Science
- Year
- 1984
- Tongue
- English
- Weight
- 252 KB
- Volume
- 112
- Category
- Article
- ISSN
- 0009-2614
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โฆ Synopsis
The magnetic field effect on the hydrogen abstraction reaction of anthraquinone in sodium dodecyl sulfate (SDS) micellar solution has been studied by two-step laser escitation fluorescence including a variable delay technique. The risetime of the "cage product" is 380 ns at 0 G and 890 ns at 800 G, while its yield decreases by 20% at 800 G. The results are interpreted in terms of the radical pair model of CIDNP.
๐ SIMILAR VOLUMES
The yield of escaping benzenesulfonyl radical was found to be increased by a magnetic field. The yield at 1.2 T was 1.53 k 0.05 times that at 0 T. From the observed magnetic field effects, the present reaction was proved to occur from triplet radical pairs.