Highly soluble green-emitting Ir(III) complexes with 9-(6-phenyl-pyridin-3- ylmethyl)-9H-carbazole ligands and their application to polymer light-emitting diodes

Min Ju Cho, Jae Il Kim, Chang Seop Hong, Young Min Kim, Young Wook Park, Byeong Kwon Ju, Dong Hoon Choi

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

Highly organic soluble Ir(III) complexes with 9-(6-phenyl-pyridin- 3ylmethyl)-9H-carbazole were simply synthesized, and the solubility of the new complex was significantly improved when compared with the conventional green-emitting Ir(ppy)3. Since a carbazole group is tethered through a nonconjugated methylene spacer, the photophysical properties of new complexes are almost identical with those of conventional Ir(ppy)3. The pure complexes were utilized to prepare electrophos-phorescent polymer light-emitting diodes (PLEDs). The device performances were observed to be relatively better or comparable with those of IKppy)s based poly(ATvinylcarbazole) systems. The integration of rigid hole-transporting carbazole and phosphorescent complex provides a new route to design highly efficient solution-processable complex for electrophosphorescent PLED applications.

Original languageEnglish
Pages (from-to)7419-7428
Number of pages10
JournalJournal of Polymer Science, Part A: Polymer Chemistry
Volume46
Issue number22
DOIs
Publication statusPublished - 2008 Nov 15

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Keywords

  • Absorption
  • Crystal structures
  • Electrophosphorescence
  • Host-guest systems
  • Iridium(III) complex
  • Luminescence
  • Miscibility
  • Photoluminescence
  • Solubility
  • Triplet energy transfer

ASJC Scopus subject areas

  • Materials Chemistry
  • Polymers and Plastics
  • Organic Chemistry

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