Laser-photolysis study of the photochemical processes of carbonyl compounds in micelles under high magnetic fields
โ Scribed by Yoshio Sakaguchi; Hisaharu Hayashi
- Publisher
- Elsevier Science
- Year
- 1982
- Tongue
- English
- Weight
- 389 KB
- Volume
- 87
- Category
- Article
- ISSN
- 0009-2614
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โฆ Synopsis
The mqnellc field cffccts of Ihe photochcmrul rc;lct~ons of bcnzophcnonc dernxwcs and dlbcnzylkelone ucrc studled.
The dray ralc of the 4.4'-ddluorobcnzophcnonc kctyl radical in a sodium dodcc~lsulfatc mrccllc contmucd lo dccrwx from Z 9 x 106 s-1 at 0 T 10 3 0 x 10s s-1 at 1.3-I-r.
๐ SIMILAR VOLUMES
The mechanisms of the photochemical reactions of triphenylgermane and I-naphthylphenylmethylgermane in solution were studied. by mzwxement of the trzxnsient absorption spectra of their triplet states and germyl radicals. The rate constant for the chlorine abstraction reaction by each radical with CC
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.
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