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Spin-locking in concentration-narrowed OD ESR spectra
Institute of Chemical Kinetics and Combustion, Siberian Branch of the USSR Academy of Sciences, Institutskaya str. 3, Novosibirsk, 630090, USSR.
1989 (English)In: Chemical Physics, ISSN 0301-0104, E-ISSN 1873-4421, Vol. 138, no 1, p. 173-178Article in journal (Refereed) Published
Abstract [en]

The effect of spin- locking under the action of a resonance rf field of large amplitude has been observed in the optically detected ESR spectra (OD ESR) of radical-ion pairs both in strong and weak magnetic fields. "Hampering" of singlet-tgriplet transitions occurs for concentrations of aromatic acceptors in non polar solutions at room temperature from 10e-4 to 1 M. It is proposed that in spite of strong concentration narrowing OD ESR signals are inhomogeneously broadened. This can be due to neutral molecule- radical-anion aggregate formation.

Place, publisher, year, edition, pages
Amsterdam: Elsevier , 1989. Vol. 138, no 1, p. 173-178
Keywords [en]
Experimental study ; EPR spectrum ; Chemical solution ; Magnetic field ; Singlet triplet transition ; Spectral line profile ; Concentration effect ; Molecular aggregation ; Organic compounds ; Hydrocarbon ; Benzenic compound ; Condensed benzenic compound ; Isotopic species ; Naphthalene ; Diphenyl ;
National Category
Physical Chemistry Physical Chemistry
Identifiers
URN: urn:nbn:se:miun:diva-10173DOI: 10.1016/0301-0104(89)80266-6OAI: oai:DiVA.org:miun-10173DiVA, id: diva2:273987
Available from: 2009-10-26 Created: 2009-10-26 Last updated: 2017-12-12Bibliographically approved

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Koptyug, Andrey

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