Thermochromism in poly(3-hexylthiophene) in the solid state: A spectroscopic study of temperature-dependent conformational defects

W. R. Salaneck*, O. Inganäs, B. Thémans, J. O. Nilsson, B. Sjögren, J. E. Österholm, Jean-Luc Bredas, S. Svensson

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

237 Scopus citations

Abstract

Reversible thermochromism in thin solid films of poly(3-hexylthiophene), or P3HT, has been studied using ultraviolet and x-ray photoelectron spectroscopies (UPS and XPS, respectively). The UPS and XPS spectra, as well as previously published optical absorption spectra, are analyzed using the results of valence effective Hamiltonian (VEH) quantum chemical calculations of the electronic structure of isolated polymer chains. The analysis of the spectra indicates that at elevated temperatures thermally induced electronic localization occurs as a consequence of thermally induced conformational disorder.

Original languageEnglish (US)
Pages (from-to)4613-4619
Number of pages7
JournalThe Journal of chemical physics
Volume89
Issue number8
DOIs
StatePublished - Jan 1 1988

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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