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Electron spin polarization of free radicals induced by electron-nuclear cross relaxation

✍ Scribed by F. Jent; H. Paul

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

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✦ Synopsis

Transient radicals 'C (CH,) 2X are generated in solution by laser flash photolysis, and chemically induced electron polarization (CIDEP) is investigated by time-resolved ESR spectroscopy. The sign reversal of multiplet polarization at longer times, observed for t-butyl and 2-hydroxy-2-propyl radicals is studied as a function of temperature and solvent and is explainable by efficient electron-nuclear cross relaxation due to modulation of the nonplanarity at the radical centre.

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