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Magnetic Resonance Studies of Soliton Diffusion in Polyacetylene

  • F. Devreux
  • K. Holczer
  • M. Nechtschein
  • T. C. Clarke
  • R. L. Greene
Part of the Springer Series in Solid-State Sciences book series (SSSOL, volume 23)

Abstract

It has been known for many years that paramagnetic centers are present in conjugated polymers [1]. Recently, a renewal of interest in the properties of these centers has arisen from NMR [2] and ESR [3–9] experiments in undoped polyacetylene, (CH)X, and a proposed explanation for the uncharged spins in terms of a bond alternation domain wall (topological soliton) model [10, 11]. In this paper we will review our previous room temperature NMR results [2], present new results as a function of oxygen exposure and temperature variation, attempt to reconcile the apparent differences between the NMR and ESR data, and compare our results to the soliton theory.

Keywords

Dynamic Nuclear Polarization Spin Diffusion Oxygen Exposure Nuclear Relaxation Soliton Theory 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 1981

Authors and Affiliations

  • F. Devreux
    • 1
  • K. Holczer
    • 1
  • M. Nechtschein
    • 1
  • T. C. Clarke
    • 2
  • R. L. Greene
    • 2
  1. 1.Département de Recherche FondamentaleCentre d’Etudes Nucléaires de GrenobleGrenoble CedexFrance
  2. 2.IBM Research LaboratorySan JoseUSA

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