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



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.


  1. 1.
    L.T. Muus, P.W. Atkins, K.A. Mclauchan et al., Chemically Induced Magnetic Polarization (D. Reidel Publishing Company, Boston, 1977)Google Scholar
  2. 2.
    J.P. Fouassier, J.F. Rabek, Lasers in Polymer Science and Technology: Applications, Volume I, CRC Press, USA, chapter 9 (1989)Google Scholar
  3. 3.
    C.M.R. Clancy, V.F. Tarasov, M.D.E. Forbes, Time-resolved electron paramagnetic resonance studies in organic photochemistry. Electron Paramagn. Reson. 16, 50–78 (1998)CrossRefGoogle Scholar
  4. 4.
    J.B. Pedersen, C.E.M. Hansen, H. Parbo et al., A CIDEP study of p-benzosemiquinone. J. Chem. Phys. 63, 2398–2405 (1975)CrossRefGoogle Scholar
  5. 5.
    T.X. Lu, J. Gao, Proton exchange effects in laser photolytic p-benzosemiquinone spin polarized radicals. Spectro Letts. 29, 1459–1468 (1996)CrossRefGoogle Scholar
  6. 6.
    H.M. Su, G.Z. Li, L.Q. Zheng et al., A CIDEP study of photolyzed p-benzoquinone radical in homogeneous solvents and micellar solutions. Colloids Surf. A 123–124, 107–113 (1997)CrossRefGoogle Scholar
  7. 7.
    G.Z. Li, J.H. Mu, X.Z. Li et al., A time-resolved electron spin resonance investigation of the photolysis of 1,4-naphthoquinone in aqueous micellar solutions and microemulsions. Colloids Surf. A 194, 263–270 (2001)CrossRefGoogle Scholar
  8. 8.
    X.Y. Zhang, X.S. Xu, T.X. Lu, CIDEP investigation of photoexcited triplet/radical system in the presence of quencher. Chin. J. Chem. 18, 683–687 (2000)Google Scholar
  9. 9.
    M. Jager, J.R. Norris, A time-resolved EPR study of the electron-spin-polarization pathways of p-benzosemiquinone. J. Magn. Reson 150, 26–34 (2001)CrossRefGoogle Scholar
  10. 10.
    M. Jager, C.Y. Brian, J.R. Norris, Exploring complex CIDEP of p-benzosemiquinone with time resolved CW-EPR. Mol. Phys. 100, 1323–1331 (2002)CrossRefGoogle Scholar
  11. 11.
    P.J. Hore, K.A. Mclauchan, S. Frydkjaer, Structure in time-resolved ESR spectra. Chem. Phys. Letts. 77, 127–130 (1981)CrossRefGoogle Scholar
  12. 12.
    T. Yago, Y. Kobori, K. Akiyama, Time-resolved EPR study on reorganization energies for charge recombination reactions in the systems involving hydrogen bonding. Chem. Phys. Letts. 369, 49–54 (2003)CrossRefGoogle Scholar
  13. 13.
    T. Tachikawa, Y. Kobori, K. Akiyama, Spin dynamics and zero-field splitting constants of the triplet exciplex generated by photoinduced electron transfer reaction between erythrosin B and duroquinone. Chem. Phys. Letts. 360, 13–21 (2002)CrossRefGoogle Scholar
  14. 14.
    R.H. Bisby, A.W. Parker, Reactions of excited triplet DQ with α-tocopherol and ascorbate: a nanosecond laser photolysis and time-resolved resonance raman investigation. J. Am. Chem. Soc. 117, 5664–5670 (1995)CrossRefGoogle Scholar
  15. 15.
    T.X. Lu, Q.Z. Wei, Q.S. Yu, 0.2 microsecond time-resolved ESR spectrometer. Chin. J. Sci. Instrum. 14, 262–268 (1993)Google Scholar
  16. 16.
    G.Z. Li, X.Z. Li, L.M. Zhai et al., Studies on photolyzed anthracenequinone radical by using TR-ESR spectrometer. Colloids Surf. A 167, 143–149 (2000)CrossRefGoogle Scholar
  17. 17.
    G.Z. Li, J.H. Mu, X.Z. Li et al., A CIDEP study of photolyzed anthraquinone radicals in aqueous micellar solutions and microemulsions. Colloids Surf. A 182, 269–274 (2001)CrossRefGoogle Scholar
  18. 18.
    X.S. Xu, X. Hong, W.J. Zhang et al., A TRESR study on the generation mechanism of benzoquinone anion radical. Spectrosc. Lett. 39, 13–20 (2006)CrossRefGoogle Scholar

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

Personalised recommendations