Determination of a fraction of spin-correlated radical ion pairs in irradiated alkanes by quantum oscillation technique

Amplitudes of quantum oscillations observed in the recombination fluorescence of the (diphenylsulfide- d 10) +/( p-terphenyll- d 14) − radical ion pairs in alkanene solutions have been used to estimate a fraction of spin-correlated singlet pairs Θ in the radiation track. Θ values of 0.36 – 0.54 for...

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Published inRadiation physics and chemistry (Oxford, England : 1993) Vol. 49; no. 2; pp. 237 - 243
Main Authors Usov, O.M., Grigoryants, V.M., Tadjikov, B.M., Molin, Yu.N.
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.02.1997
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Summary:Amplitudes of quantum oscillations observed in the recombination fluorescence of the (diphenylsulfide- d 10) +/( p-terphenyll- d 14) − radical ion pairs in alkanene solutions have been used to estimate a fraction of spin-correlated singlet pairs Θ in the radiation track. Θ values of 0.36 – 0.54 for the solvent series studied were found. Values for a fraction of singlet recombinations f s (0.52–0.66), calculated from Θ values, are in satisfactory agreement with those available from literature. It has been observed that Θ and f s values decrease with increasing solvent viscosity (from n-hexane to cis-decalin).
ISSN:0969-806X
1879-0895
DOI:10.1016/S0969-806X(96)00141-7