Evolution of polaron states into bipolarons in polypyrrole

J. H. Kaufman, N. Colaneri, J. C. Scott, G. B. Street

Research output: Contribution to journalArticlepeer-review

168 Scopus citations


The kinetics of polaron recombination into bipolarons in polypyrrole has been studied by optical-absorption spectroscopy on films doped in situ in an electrochemical cell. ESR studies confirm that the metastable states possess spin, while the stable states do not. The data reveal a slow evolution, consistent with polaron-diffusion rates limited by the mobility of the accompanying counterion.

Original languageEnglish (US)
Pages (from-to)1005-1008
Number of pages4
JournalPhysical Review Letters
Issue number10
StatePublished - 1984
Externally publishedYes

ASJC Scopus subject areas

  • General Physics and Astronomy


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