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Magnetic field and magnetic isotope effects on the recombination kinetics of chain-linked ketyl-phenoxyl triplet radical pairs

✍ Scribed by Peter P. Levin; Vladimir Ya. Shafirovich; Elena E. Batova; Vladimir A. Kuzmin

Publisher: Elsevier Science
Year: 1994
Tongue: English
Weight: 547 KB
Volume: 228
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(94)00947-3

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✦ Synopsis

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The recombination kinetics of protonated and perdeuteriated chain-linked ( ( CH2), linker, n = 3, 6, and 10) triplet ketylphenoxyl radical pairs (RP ) have been examined by using the laser flash technique under an external magnetic field. The high values of magnetic isotope effect (MIE) up to 3 were measured for RPs with small exchange interaction ( n = 6 and 10). Application of a very small magnetic field 0.1 mT results in the noticeable retardation of perdeuteriated RP recombination and MIE enhancement for n= 10, while at n= 6 those changes are negligible.

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