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Title of Journal: Res Chem Intermed

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Abbravation: Research on Chemical Intermediates

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Springer Netherlands

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1568-5675

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Viscosity effect on the CIDEP of laser photolysis

Authors: Xinsheng Xu Lixia Jia Lei Shi Xuehan Ji Zhifeng Cui
Publish Date: 2010/03/12
Volume: 36, Issue: 3, Pages: 269-275
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Abstract

Chemically induced dynamic electron polarization CIDEP is one of the important research fields of dynamic spin chemistry In the present work with ethylene glycol 12propanol and their mixtures with different ratios in volume as solvents and duroquinone as photosensitive molecule the influence of solvent viscosity on the CIDEP of photolyzed duroquinone radicals has been studied experimentally In each solvent duroquinone neutral radicals are observed Duroquinone neutral radicals are generated through hydrogen transfer reaction from hydrogendonor solvent molecules to excited duroquinone triplet The CIDEP mechanism is mainly triplet mechanism The CIDEP intensity of duroquinone neutral radicals decreases with the increase in the solvent viscosity and the variation was rapid in lowviscosity range and slow in highviscosity range

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