Extended π-conjugation in poly(p-phenylenevinylene) from a chemically modified precursor polymer

D. A. Halliday, P. L. Burn, R. H. Friend, D. D. C. Bradley, A. B. Holmes, A. Kraft

Research output: Contribution to journalConference article

Abstract

We have developed a synthetic method that allows a controlled increase in the one-dimensional character of poly(p-phenylenevinylene) by subtle chemical modification of the precursor polymer. Examples of the unoriented fully conjugated material exhibit room temperature optical absorption spectra (uncorrected for reflectivity) which have a peak in absorption at 2.45 eV with subsidiary shoulders at higher photon energies. The absorption maximum is red-shifted with respect to previously observed values. Luminescence spectra of these samples recorded at 10K are complementary with a peak in emission at 2.38 eV and accompanying subsidiary maxima at lower energies. The peaks in absorption and emission are identified as the transitions between the vibrational ground states of the electronic and the first excited singlet states which we term the (0,0) transitions.

Original languageEnglish
Pages (from-to)954-959
Number of pages6
JournalSynthetic Metals
Volume55
Issue number2-3
DOIs
Publication statusPublished - 22 Mar 1993
EventInternational Conference on Science and Technology of Metals 1992 - Goteborg, Sweden
Duration: 12 Aug 199218 Aug 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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