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Durham University

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Publication details for Professor Andy Monkman

Rebourt, E, Joule, JA & Monkman, AP (1997). Polyaniline oligomers; Synthesis and characterisation. Synthetic Metals 84(1-3): 65-66.
  • Publication type: Journal Article
  • ISSN/ISBN: 0379-6779
  • Keywords: coupling reactions; nuclear magnetic resonance spectroscopy; polyaniline and derivativesMODEL

Author(s) from Durham

Abstract

Several poly(p-aniline) leucoemeraldine base oligomers were
characterised by C-13 NMR spectroscopy. The uncapped trimer and
tetramer were obtained by a new method involving a coupling step with
copper as a catalyst in DMF. The phenylcapped tetramer, hexamer and
octamer were obtained via the ''modified Honzl route''.
The leucoemeraldine base phenylcapped tetramer has been oxidised to its
emeraldine base form by silver (I) oxide in THF. The formation of two
structural isomers relating to the location of the quinoid ring has
been demonstrated by H-1 NMR and C-13 NMR spectroscopy. The molar ratio
of these two isomers has been estimated to 70:30.