Spin-locking in concentration-narrowed OD ESR spectra

Abstract

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 language	English
Pages (from-to)	173-178
Number of pages	6
Journal	Chemical Physics
Volume	138
Issue number	1
DOIs	https://doi.org/10.1016/0301-0104(89)80266-6
Publication status	Published - 1 Nov 1989
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)
Physical and Theoretical Chemistry

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10.1016/0301-0104(89)80266-6

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title = "Spin-locking in concentration-narrowed OD ESR spectra",

abstract = "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.",

author = "Koptyug, {A. V.} and Saik, {V. O.} and Animisov, {O. A.} and Molin, {Yu N.}",

year = "1989",

month = nov,

day = "1",

doi = "10.1016/0301-0104(89)80266-6",

language = "English",

volume = "138",

pages = "173--178",

journal = "Chemical Physics",

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number = "1",

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TY - JOUR

T1 - Spin-locking in concentration-narrowed OD ESR spectra

AU - Koptyug, A. V.

AU - Saik, V. O.

AU - Animisov, O. A.

AU - Molin, Yu N.

PY - 1989/11/1

Y1 - 1989/11/1

N2 - 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.

AB - 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.

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U2 - 10.1016/0301-0104(89)80266-6

DO - 10.1016/0301-0104(89)80266-6

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VL - 138

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EP - 178

JO - Chemical Physics

JF - Chemical Physics

SN - 0301-0104

IS - 1

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