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Durham University

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Publication details for Professor Andy Monkman

Pomfret, SJ, Rebourt, E & Monkman, AP (1996). Electroabsorption measurements of the emeraldine base form of polyaniline. Synthetic Metals 76(1-3): 19-22.
  • Publication type: Journal Article
  • ISSN/ISBN: 0379-6779
  • Keywords: electroabsorption; polyanilineMOLECULAR EXCITONS; SINGLE-CRYSTALS; PHOTOEXCITATION; EXCITATIONS; ABSORPTION

Author(s) from Durham

Abstract

Electroabsorption measurements have been performed on the polymeric
emeraldine base form of polyaniline and a related phenyl-capped
tetramer. The spectra run from the near infrared to the UV,
encompassing the main low energy absorption peaks of the materials. The
lineshapes of the spectra closely resemble each other, indicating that
the electronic structure of the two are similar. The results also
indicate that the state produced upon 2 eV photoexcitation is, to some
degree, spatially extended. The data for the phenyl-capped tetramer
show a small signal below the main peak in the electroabsorption which
could possibly be assigned to a transition of oscillator strength to a
normally optically forbidden transition.