Electronic Properties of Nonconjugated Polymers: 1,4-Polybutadiene and 1,4-Polyisoprene

  • Z. Shuai
  • J. L. Brédas
Conference paper
Part of the Springer Series in Solid-State Sciences book series (SSSOL, volume 107)

Abstract

We present geometry optimizations and band-structure calculations on the cis and trans forms of 1,4-polybutadiene and 1,4-polyisoprene. We show that the polymers with skewed conformations possess a width for the highest occupied valence band in the range 0.79-0.93 eV. Holes in that band should therefore present a significant intrachain mobility. The solid-state ionization potentials are found to be too large to allow for oxidation by iodine and formation of ethylene radical cations. If no polymer isomerization occurs, the previously proposed p-type conduction mechanism could thus be based on the mobility of iodonium π-complexes with somewhat delocalized double bonds or on the counter-ion poly iodide chains.

Keywords

Iodine Polyethylene Iodide Oligomer Macromolecule 

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Copyright information

© Springer-Verlag Berlin Heidelberg 1992

Authors and Affiliations

  • Z. Shuai
    • 1
  • J. L. Brédas
    • 1
  1. 1.Service de Chimie des Matériaux NouveauxUniversité de Mons-HainautMonsBelgium

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