Electron-Nuclear Double-Resonance Spectroscopy of Polarons in Conjugated Polymers

  • S. Kuroda
  • K. Murata
  • Y. Shimoi
  • S. Abe
  • T. Noguchi
  • T. Ohnishi
Part of the Springer Proceedings in Physics book series (SPPHY, volume 81)


Polarons are fundamental nonlinear excitations in conjugated polymers. Spin density distribution of polarons, or their spatial extension in other words, is one of the essential physical quantities that can be used to identify polarons. It is also known that the magnitude of electron correlation sensitively affects the detailed form of spin distribution. In this paper we discuss the electron nuclear double resonance (ENDOR) observation of the polaron in an electroluminescent polymer, poly(paraphenylene vinylene), PPV. Observed spin distribution extends over about 4 phenyl rings in half width and is well described by the theoretical calculation using PPP (Pariser-Parr-Pople) model in the case of finite electron correlation. We also present evidence for the photo-generation of polarons from the light-induced ESR spectra and their excitation profile.


Spin Density Hyperfine Coupling ENDOR Spectrum Spin Distribution Spin Density Distribution 


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  1. [1]
    A.J. Heeger, S. Kivelson, J.R. Schrieffer and W.P. Su, Rev. Mod. Phys. 60 (1988) 781.ADSCrossRefGoogle Scholar
  2. [2]
    J.H. Buiroughes, D.D.C. Bradley, A.R. Brown, R.N. Marks, K. Mackay, R.H. Friend, P.L. Burns and A.B. Holmes, Nature 347 (1990) 539.ADSCrossRefGoogle Scholar
  3. [3]
    D.R. Baigent, R.H. Friend, A.B. Holmes and S.C. Moratti, in these proceedings and references there in.Google Scholar
  4. [4]
    T. Ohnishi, S. Doi, Y. Tsuchida and T. Noguchi, in these proceedings and references there in.Google Scholar
  5. [5]
    L. Yu, So litons and Polarons in Conducting Polymers ( World Scientific, Singapore, 1988 ).Google Scholar
  6. [6]
    S. Kuroda and H. Shirakawa, Solid State Commun. 43 (1982) 591.ADSCrossRefGoogle Scholar
  7. [7]
    S. Kuroda, Mt. J. Mod. Phys. B9 (1995) 291.Google Scholar
  8. [8]
    S. Kuroda, M. Tokumoto, N. Kinoshita and H. Shirakawa, J. Phys. Soc. Jpn. 51 (1982) 693.ADSCrossRefGoogle Scholar
  9. [9]
    S. Kuroda, H. Bando and H. Shirakawa, J. Phys. Soc. Jpn. 54 (1985) 3956.ADSCrossRefGoogle Scholar
  10. [10]
    S. Kuroda and H. Shirakawa, Phys. Rev. B35 (1987) 9380.ADSCrossRefGoogle Scholar
  11. [11]
    S. Kuroda and H. Shirakawa, J. Phys. Soc. Jpn. 61 (1992) 2930.ADSCrossRefGoogle Scholar
  12. [12]
    M. Mehring, A. Grupp, P. Höfer and H. Käss, Synth. Met. 28 (1989) D399.CrossRefGoogle Scholar
  13. [13]
    S. Kuroda, T. Noguchi and T. Ohnishi, Phys. Rev. Lett. 72 (1994) 286.ADSCrossRefGoogle Scholar
  14. [14]
    S. Kuroda, K. Murata, T. Ohnishi and T. Noguchi, J. Phys. Soc. Jpn. 64 (1995) 1369.ADSGoogle Scholar
  15. [15]
    Y. Shimoi, S. Abe, S. Kuroda and K. Murata, Solid State Commun. 95 (1995) 137.ADSCrossRefGoogle Scholar
  16. [16]
    K. Murata, S. Kuroda, Y. Shimoi, S. Abe, T. Ohnishi and T. Noguchi, Paper to be presented at 51st Annual Meeting of the Physical Society of Japan, Kanazawa, 1996.Google Scholar
  17. [17]
    M. Chandross, S. Mazumdar, S. Jeglinski, X. Wei, Z.V. Vardeny, E.W. Kwock and T.M. Miller, Phys. Rev. B50 (1994) 14702.CrossRefGoogle Scholar
  18. [18]
    A. Carrington and A.D. McLachlan, Introduction to Magnetic Resonance ( Harper and Row, New York, 1967 ).Google Scholar
  19. [19]
    L. Kevan and L.D. Kispert, Electron Spin Double Resonance Spectroscopy ( John Wiley & Sons, New York, 1976 ).Google Scholar
  20. [20]
    J. R. Morton, Chem. Rev. 64 (1964) 453.CrossRefGoogle Scholar
  21. [21]
    K. Yonemitsu, Y. Ono and Y. Wada, J. Phys. Soc. Jpn. 57 (1988) 3875.ADSCrossRefGoogle Scholar
  22. [22]
    S. Kuroda, I. Murase, T. Ohnishi and T. Noguchi, Synth. Metals 17 (1987) 663.CrossRefGoogle Scholar
  23. [23]
    P. Brendel, A. Grupp, M. Mehring, R. Schenk, K. Müllen and W. Huber, Synth. Metals 45 (1991) 49.CrossRefGoogle Scholar
  24. [24]
    M. Baumgarten, L. Gherghel and S. Karabunarliev, Synth. Metals 69 (1995) 633.CrossRefGoogle Scholar
  25. [25]
    S. Abe, in these proceedings.Google Scholar
  26. [26]
    H.A. Mizes and E.M. Conwell, Phys. Rev. Lett. 70 (1993) 1505.ADSCrossRefGoogle Scholar
  27. [27]
    C. Kittel, Introduction to Solid State Physics (Wiley, New York, 1966) 3rd ed., Chap. 17.Google Scholar
  28. [28]
    L.S. Swanson, J. Shinar, A.R. Brown, D.D.C. Bradley, R.H. Friend, P.L. Burn, A. Kraft and A.B. Holmes, Phys. Rev. B46 (1992) 15072.CrossRefGoogle Scholar
  29. [29]
    Y. Shimoi and S. Abe, Synth. Metals., in press.Google Scholar

Copyright information

© Springer-Verlag Tokyo 1996

Authors and Affiliations

  • S. Kuroda
    • 1
  • K. Murata
    • 1
  • Y. Shimoi
    • 1
  • S. Abe
    • 1
  • T. Noguchi
    • 2
  • T. Ohnishi
    • 2
  1. 1.Electrotechnical LaboratoryTsukuba, Ibaraki 305Japan
  2. 2.Tsukuba Research LaboratorySumitomo Chemical Co. Ltd.Tsukuba, IbarakiJapan

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