Hyperfine Interactions

, Volume 32, Issue 1–4, pp 535–549 | Cite as

μSR in polyacetylenes

  • K. Nagamine
  • K. Ishida
Mu and μ+ States in Solids


In a series of μ+ experiments either at UT-MSL BOOM or at TRIUMF, we have found that the positive muon can create an interesting and systematic “after-effect” in the well-known organic semiconductor polymer polyacetylene, (CH)x or (CD)x: the localized unpaired electron at nearby carbon sites is produced in cis-polyacetylene, to form a muon radical; in trans-polyacetylene, the electron becomes mobile and takes “soliton”-like one dimensional rapid motion along the chain. Recently experiments were extended towards the following three directions: a) diffusion properties of the muon produced solition in trans-polyacetylene; b) the details of radical structure in cis-polyacetylene, and c) μSR experiments on I-doped polyacetylene. These works are reviewed along with the possible future perspectives.


Polymer Thin Film Soliton Radical Structure Unpaired Electron 
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Copyright information

© J.C. Baltzer A.G., Scientific Publishing Company 1986

Authors and Affiliations

  • K. Nagamine
    • 1
  • K. Ishida
    • 2
  1. 1.Meson Science Laboratory, Faculty of ScienceUniversity of TokyoTokyoJapan
  2. 2.Metal Physics LaboratoryInstitute of Physical and Chemical Research (RIKEN)WakohJapan

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