Synthesis and spectral properties of tris(terphenylylpyridine)iridium and tris(tritylphenylpyridine)iridium complexes as novel electrophosphorescent materials

Chie Honda, Kazuo Takimiya, Tetsuo Otsubo, Yoshio Aso

Research output: Contribution to journalArticlepeer-review

Abstract

Three novel iridium complexes ( 2a-c ) have been synthesized as structural modifications of a promising electrophosphorescent material, Ir(ppy) 3 ( 1 ). The dichloromethane solutions of these complexes like 1 showed a broad metal-to-ligand charge transfer band at around 380 nm in the absorption spectra and at around 520 nm in the emission spectra. In contrast to that of Ir(ppy) 3 , the film phases of 2a-c show remarkable emission owing to the prevention of aggregation quenching due to their bulky ligands. Organic electroluminescence devices using 2a-c emitted green light.

Original languageEnglish
Pages (from-to)373-379
Number of pages7
JournalMolecular crystals and liquid crystals
Volume455
Issue number1
DOIs
Publication statusPublished - 2006 Oct 1
Externally publishedYes

Keywords

  • Electrophosphorescent material
  • Iridium complex
  • Organic electroluminescence device
  • Photoluminescence

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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