Emissive Iridium(III) Diimine Complexes Formed by Double Cyclometalation of Coordinated Triphenylphosphite

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Yao-Yuan Chang
  • Jui-Yi Hung
  • Jong-Pyng Chyn
  • Min-Wen Chung
  • Chia-Li Lin
  • Pi-Tai Chou
  • Gene-Hsiang Lee
  • Chih-Hao Chang
  • Wei-Chieh Lin

Detail(s)

Original languageEnglish
Pages (from-to)5075-5084
Journal / PublicationInorganic Chemistry
Volume50
Issue number11
Online published4 May 2011
Publication statusPublished - 6 Jun 2011
Externally publishedYes

Abstract

We report on the synthesis of a new series of iridium(III) complexes functionalized with various diimine chromophores, together with a facially coordinated dicyclometalated phosphite chelate and a monodentate anionic ancillary. This conceptual design presents a novel strategy in obtaining a new class of iridium(III) diimine complexes without employment of traditional nitrogen-containing polyaromatic cyclometalates. Additionally, we discuss the basic charactersistics of the ground and lower-lying excited states involved, as documented by crystal structural, photophysical studies, and density functional theory calculations. Fabrication of the green-emitting organic light-emitting diodes with one such dopant, [Ir(dbbpy)(tpit)NCS] (2b), where dbbpy and tpit represent di-tert-butyl-2,2'-bipyridine and dicyclometalated triphenylphosphite, respectively, was successfully made, attaining a peak external quantum efficiency (ηext), a luminance efficiency (ηl), and a power efficiency (ηp) of 14.1%, 46.6 cd A-1, and 39.9 lm W-1, respectively.

Citation Format(s)

Emissive Iridium(III) Diimine Complexes Formed by Double Cyclometalation of Coordinated Triphenylphosphite. / Chang, Yao-Yuan; Hung, Jui-Yi; Chi, Yun; Chyn, Jong-Pyng; Chung, Min-Wen; Lin, Chia-Li; Chou, Pi-Tai; Lee, Gene-Hsiang; Chang, Chih-Hao; Lin, Wei-Chieh.

In: Inorganic Chemistry, Vol. 50, No. 11, 06.06.2011, p. 5075-5084.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review