Electronic Properties of Polyaniline

  • S. Stafströma
Part of the Springer Series in Solid-State Sciences book series (SSSOL, volume 76)


Geometry, band structure, and electronic excitations are studied in tetramers and polymers built up from the emeraldine structural unit. Special attention is focused on the bipolaron and polaron conformations of the conducting emeraldine salt form. It is found that, in contrast to all other conducting polymers, only one defect band appears in the gap. The calculated electronic excita-tion spectrum for the emeraldine salt tetramer having a bipolaron conformation is shown to compare favourably with the optical absorption spectrum for the same system. For poly-emeraldine salt, however, we are able to present strong evidence that the polaron conformation is stable.


Band Structure Optical Absorption Spectrum Interband Transition Emeraldine Base Emeraldine Salt 
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Copyright information

© Springer-Verlag Berlin Heidelberg 1987

Authors and Affiliations

  • S. Stafströma
    • 1
    • 2
  1. 1.Laboratoire de Chimie Théorique AppliquéeCentre de Recherches sur les Matériaux Avancés, Facultés Universitaires Notre-Dame de la PaixNamurBelgium
  2. 2.Dept. of PhysicsLinköping UniversityLinköpingSweden

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