Photoelectron spectroscopy study of the charge-induced π-electronic structural changes in α,ω-diphenyltetradecaheptaene. A model molecule for polyacetylene

M. Logdlund, P. Dannetun, S. Stafstrom, W. R. Salaneck, C. Fredriksson, J. L. Bredas, M. G. Ramsey, C. W. Spangler

Research output: Contribution to journalConference articlepeer-review

Abstract

The π-electronic structural changes in a diphenylpolyene, α,ω-diphenyltetradecaheptaene, or DP7, have been studied upon gradually doping with sodium, using X-ray and Ultraviolet Photoelectron Spectroscopy, XPS and UPS. The spectra are interpreted with the help of the results from Austin Model 1 (AM1) and Valence Effective Hamiltonian (VEH) quantum chemical calculations. The results of the doping with sodium can be discussed in terms of two confined solitons on the polyene part of the molecule, which results in two new energy levels in the originally forbidden energy gap.

Original languageEnglish (US)
Pages (from-to)4722-4727
Number of pages6
JournalSynthetic Metals
Volume57
Issue number2 -3 pt 6
StatePublished - Jan 1 1993
Externally publishedYes
EventProceedings of the International Conferece on Science and Technology of Synthetic Metals - Goteborg, Swed
Duration: Aug 12 1992Aug 18 1992

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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