Synthesis, characterization, physical properties, and blue electroluminescent device applications of phenanthroimidazole derivatives containing anthracene or pyrene moiety

Shaoqing Zhuang, Ronggang Shangguan, Hong Huang, Guoli Tu, Lei Wang*, Xunjin ZHU

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

74 Citations (Scopus)

Abstract

By introducing a highly fluorescent anthracene, 9-(naphthalen-2-yl) anthracene or pyrene unit at the N1-phenyl of 1,2-diphenyl-1H-phenanthro[9,10-d] imidazole, three novel blue-emissive materials (ANPI, 2-NaNPI and PNPI) were synthesized and characterized, of which HOMO and LUMO orbitals are specifically segregative. Their high luminescence efficiency and excellent stability render them promising materials in electroluminescent device. The undoped three layers device using PNPI exhibits a maximum current efficiency of 4.99 cd A -1 with Commission Internationale d'Eclairage (CIEx,y) color coordinates of (x = 0.15, y = 0.17). Meanwhile, the property differences between N1-substituted and C2-substituted of diphenyl-1H-phenanthro[9,10-d] imidazole derivatives were studied. The results indicate that the change of conjugated position and moiety for those blue hosts can affect the electrical field polarization of device. Specifically, all the blue host materials containing anthracene moiety show an impressive luminous current efficiency around 12 cd A-1 when doped with sky blue fluorescent material BUBD-1.

Original languageEnglish
Pages (from-to)93-102
Number of pages10
JournalDyes and Pigments
Volume101
DOIs
Publication statusPublished - 2014

Scopus Subject Areas

  • Chemical Engineering(all)
  • Process Chemistry and Technology

User-Defined Keywords

  • Anthracene
  • Blue host material
  • High Tg
  • Organic light-emitting device
  • Phenanthro[9,10-d]imidazole
  • Pyrene

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