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Pressure effects on the electron spin relaxation of several radicals in solution

✍ Scribed by Yoshimi Sueishi; Keiji Kuwata

Publisher
Elsevier Science
Year
1989
Tongue
English
Weight
321 KB
Volume
160
Category
Article
ISSN
0009-2614

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✦ Synopsis

The pressure effect on the decay rate of chemically induced dynamic electron spin polarization (CIDEP) was investigated on several free-radical intermediates in photolysis, and the spin-lattice relaxation times for these radicals were estimated from the decay rates of CIDEP signals at various pressures. The spin-lattice relaxation rates were retarded by increasing external pressure. From the pressure dependence of the spin-lattice relaxation rates the activation volume was estimated. The activation volumes of these radicals divide into two groups; * 30 cm3 molt ' for negative ions and z 10 cm3 mol-' for neutral radicals.

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