Iridium complexes bearing paraphenylene or tetraphenylmethane ligands as novel emitting materials

Chie Honda, Kazuo Takimiya, Tetsuo Otsubo, Yoshio Aso

Research output: Contribution to conferencePaperpeer-review

Abstract

We synthesized novel iridium complexes bearing paraphenylene or tetraphenylmethane ligands. The solution absorption spectra of 3a-c show an MLCT band together with the local excitation transitions of their ligands. Solution emission spectra are red-shifted and weakened as compared to that of Ir(ppy)3. This result indicates that the introduced π-conjugated groups markedly affected the photophysical decay process. In contrast to the case of Ir(ppy)3, the film emission spectra of 3a-c are observed because of prevention of concentration quenching due to the bulky ligand groups. Organic electroluminescence devices using the iridium complexes show green emission.

Original languageEnglish
Number of pages1
Publication statusPublished - 2005 Dec 1
Externally publishedYes
Event54th SPSJ Annual Meeting 2005 - Yokohama, Japan
Duration: 2005 May 252005 May 27

Other

Other54th SPSJ Annual Meeting 2005
Country/TerritoryJapan
CityYokohama
Period05/5/2505/5/27

Keywords

  • Emission spectrum
  • Iridium complex
  • Organic electroluminescence

ASJC Scopus subject areas

  • Engineering(all)

Fingerprint

Dive into the research topics of 'Iridium complexes bearing paraphenylene or tetraphenylmethane ligands as novel emitting materials'. Together they form a unique fingerprint.

Cite this