Donor-acceptor interactions in organometallic and organic poly-ynes

A. Köhler, M. Younus, M. R.A. Al-Mandhary, P. R. Raithby, M. S. Khan, R. H. Friend

Research output: Contribution to journalConference article

17 Citations (Scopus)

Abstract

The donor-acceptor interactions in organic polyene were investigated using the spacers between the acetylenic units as acceptors and an electron-rich transition metal platinum or an alkoxy-substituted phenyl ring as donors. The fluorine-substituted phenyl ring was too weak an acceptor to cause a donor-acceptor interaction with the platinum ion. The donor-acceptor interaction present in the thieno-pyrazine unit was enhanced by the electron system in the polymer backbone which caused a charge-transfer transition which lowers the optical gap from 3.0 eV to 1.7 eV. The decoupling between the first and second excited state was strong enough to allow emission from the second excited state.

Original languageEnglish
Pages (from-to)246-247
Number of pages2
JournalSynthetic Metals
Volume101
Issue number1
DOIs
Publication statusPublished - May 1999
EventProceedings of the 1998 International Conference on Science and Technology of Synthetic Metals (ICSM-98) - Montpellier
Duration: 12 Jul 199818 Jul 1998

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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