Stilbene like carbazole dimer-based electroluminescent materials

Chih Hsin Chen, Jiann T. Lin, Ming-Chang P. Yeh

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Two carbazole dimers (1 and 10) were synthesized from 9-ethyl-9H-carbazole-3-carbaldehyde and 6-bromo-9-ethyl-9H-carbazole-3-carbaldehyde by McMurry C-C coupling reaction. Palladium(0)-catalyzed C-N coupling reactions of 10 and various diarylamines result in the formation of stable carbazole derivatives in good yields. These compounds are fluorescent in blue to yellow region with moderate to good quantum yields. Also, they are thermally stable and capable of hole-transporting due to the presence of the carbazole moieties. The electroluminescent devices fabricated using 1, 2, and 3 as hole-transporters/emitters with a bilayer structure ITO/Cpd/TPBI or Alq3/LiF/Al (Cpd=1, 2, and 3) exhibit good performance (e.g., ηext=1.0-2.1%; ηp=0.9-1.9 lm/W; ηc=2.4-4.8 cd/A at a current density of 100 mA/cm2).

Original languageEnglish
Pages (from-to)8564-8570
Number of pages7
JournalTetrahedron
Volume62
Issue number36
DOIs
Publication statusPublished - 2006 Sep 4

Keywords

  • Carbazole dimmer
  • Electroluminescent
  • McMurry C-C coupling reaction

ASJC Scopus subject areas

  • Biochemistry
  • Drug Discovery
  • Organic Chemistry

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