Research on Chemical Intermediates

, Volume 35, Issue 1, pp 55–61 | Cite as

A CIDEP study of photolysis of duroquinone/hydrogen-donor homogeneous and triton micelle solutions

  • Xu Xinsheng
  • Jia Lixia
  • Zhu Guanglai
  • Cui Zhifeng


The CIDEP spectra of transient radicals during photolysis of the duroquinone (DQ)/ethylene glycol (EG) system in acid, basic, and micellar environments were measured with a home-made highly time-resolved ESR spectrometer. In the DQ/EG homogeneous solution, the enhanced emissive CIDEP signal of the neutral durosemiquinone radical DQH was observed. When the DQ/EG solution at pH 9 or the DQ/EG/TX-100/H2O micelle system was photolyzed, the CIDEP signal of the duroquinone anion radical (DQ•−) was obtained. When the DQ/EG solution at pH 2.5 was irradiated, the CIDEP signal of DQH appeared. These experimental results indicate that the neutral radical DQH was formed by proton transfer from EG to 3DQ*, and that DQ•− was formed by dissociation of DQH accompanying polarization transfer.


Duroquinone CIDEP TR-ESR TX-100 micelle 



Financial support of this work by the National Natural Science Foundation of China (No. 10674002) is gratefully acknowledged.


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Copyright information

© Springer Science+Business Media B.V. 2009

Authors and Affiliations

  • Xu Xinsheng
    • 1
  • Jia Lixia
    • 1
  • Zhu Guanglai
    • 1
  • Cui Zhifeng
    • 1
  1. 1.Institute of Atomic and Molecular PhysicsAnhui Normal UniversityWuhuPeople’s Republic of China

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