Spin-locking in concentration-narrowed OD ESR spectra

A. V. Koptyug, V. O. Saik, O. A. Animisov, Yu N. Molin

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)


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-triplet transitions occurs for concentrations of aromatic acceptors in non-polar solutions at room temperature from 10-4 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-cation aggregate formation.

Original languageEnglish
Pages (from-to)173-178
Number of pages6
JournalChemical Physics
Issue number1
Publication statusPublished - 1 Nov 1989
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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