Synthesis and photophysical characterization of orange-emitting iridium(III) complexes containing benzothiazole ligand

Guoyong Xiao, Xiao Li, Haijun Chi, Yunhua Lu, Yan Dong, Zhizhi Hu, Jianglong Yu, Masaru Kimura

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9 Citations (Scopus)

Abstract

Two novel iridium(III) (Ir(III)) complexes (dmabt) 2Ir(acac) and (dpabt) 2Ir(acac)(dmabt, 4-N,N-dimethylbenzenamineyl-2-benzo[d] thiazole; dpabt, 4-N,N-diphenylbenzenamineyl-2-benzo[d]thiazole; acac, acetylacetone) were synthesized and structurally characterized by NMR and mass spectrometry. The organic light-emitting diodes based on these complexes with the structure of ITO/m-MTDATA (10 nm)/NPB (20 nm)/CBP: Ir-complex (X%, 30 nm)/BCP (10 nm)/Alq 3 (30 nm)/LiF (1 nm)/Al (100 nm) were fabricated. The device based on (dmabt) 2Ir(acac) exhibited a maximum efficiency of 19.5 cd/A, a luminance of 15802 cd/cm 2; and the device based on (dpabt) 2Ir(acac) showed a maximum efficiency of 14.8 cd/A, a luminance of 11334 cd/cm 2. Both devices displayed orange emissions and the corresponding Commission International de L'Eclairage (CIE) coordinates (1931) were (0.517, 0.481) and (0.557, 0.443), respectively.

Original languageEnglish
Pages (from-to)497-502
Number of pages6
JournalSynthetic Metals
Volume162
Issue number5-6
DOIs
Publication statusPublished - Apr 2012
Externally publishedYes

Keywords

  • Benzothiazole
  • Iridium complex
  • OLEDs
  • Phosphorescence

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