Localized electron to radical conversion in X-irradiated single crystals of 1,6-hexanediol and 1,8-octanediol

The formation and reactions of radicals in X-irradiated single crystals of 1,6-hexanediol and 1,8-octanediol have been examined. ESR experiments have been performed between 4.2 K and room temperature in both the X- and Q-bands and correlated with kinetic data from pulse radiolysis. The primary oxidi...

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Bibliographic Details
Published in:International journal of radiation applications and instrumentation. Part C, Radiation physics and chemistry Radiation physics and chemistry, 1987, Vol.29 (6), p.439-445
Main Authors: Lindgren, Mikael, Lund, Anders, Ogasawara, Masaaki, Samskog, Per-Olof
Format: Article
Language:English
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Summary:The formation and reactions of radicals in X-irradiated single crystals of 1,6-hexanediol and 1,8-octanediol have been examined. ESR experiments have been performed between 4.2 K and room temperature in both the X- and Q-bands and correlated with kinetic data from pulse radiolysis. The primary oxidized and reduced species, localized cations and electrons, decompose to neutral hydroxyalkyl and alkyl radicals. Based on purely mechanistic aspects it is proposed that the localized electron, detected in this class of hydroxy-compounds, consists of a molecular anion stabilized by a neighbouring OH group. This anion is formed by electron attachment to a molecule within the hydrogen-bonded network. The activation energy for the decay of this species is determined by pulse radiolysis and correlated with the ESR experiments. Conversions between radicals occur thermally and by illumination, in agreement with results reported previously.
ISSN:1359-0197
1878-1020
DOI:10.1016/1359-0197(87)90021-X