(13)C NMR of AsF5 Doped Polyacetylene.

Abstract

Natural abundance C13 NMR experiments using cross polarization and magic angle spinning are reported for polyacetylene as a function of AsF5 doping level. In contrast with previous authors we find that the doping of cis-polyacetylene leads, even at low doping levels, to a new signal characteristic of the doped regions of the polymer. Similar measurements on trans-polyacetylene indicate that the doping of the trans isomer proceeds considerably more uniformly than that of the cis osomer. Comparisons with appropriate model compounds suggest that the observed shift of the C13 NMR signal on doping is primarily a chemical shift rather than a Knight shift. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Sep 08, 1981
Accession Number
ADA107167

Entities

People

  • J. C. Scott
  • T. C. Clarke

Organizations

  • International Business Machines Corporation (Armonk, NY)

Tags

DTIC Thesaurus Topics

  • Acquisition
  • Chemical Shifts
  • Chemistry
  • Conductive Polymers
  • Contrast
  • Controlled Atmospheres
  • Cross Polarization
  • Electrons
  • Magnetic Fields
  • Materials
  • Military Research
  • Polymers
  • Resonance
  • Spectra
  • United States
  • United States Government

Readers

  • Polymer Science and Technology
  • Positioning, Navigation, and Timing (PNT) Technology.
  • Quantum spin resonance or Electron Paramagnetic Resonance spectroscopy.