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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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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