Issue 17, 2016

Solubilised bright blue-emitting iridium complexes for solution processed OLEDs

Abstract

Combining a sterically bulky, electron-deficient 2-(2,4-difluorophenyl)-4-(2,4,6-trimethylphenyl)pyridine (dFMesppy) cyclometalating CN ligand with an electron rich, highly rigidified 1,1′-(α,α′-o-xylylene)-2,2′-biimidazole (o-xylbiim) NN ligand gives an iridium complex, [Ir(dFMesppy)2(o-xylbiim)](PF6), that achieves extraordinarily bright blue emission (ΦPL = 90%; λmax = 459 nm in MeCN) for a cationic iridium complex. This complex is compared with two reference complexes bearing 4,4′-di-tert-butyl-2,2′-bipyridine, and solution-processed organic light emitting diodes (OLEDs) have been fabricated from these materials.

Graphical abstract: Solubilised bright blue-emitting iridium complexes for solution processed OLEDs

Supplementary files

Article information

Article type
Paper
Submitted
12 Janv. 2016
Accepted
04 Febr. 2016
First published
04 Febr. 2016
This article is Open Access
Creative Commons BY license

J. Mater. Chem. C, 2016,4, 3726-3737

Author version available

Solubilised bright blue-emitting iridium complexes for solution processed OLEDs

A. F. Henwood, A. K. Bansal, D. B. Cordes, A. M. Z. Slawin, I. D. W. Samuel and E. Zysman-Colman, J. Mater. Chem. C, 2016, 4, 3726 DOI: 10.1039/C6TC00151C

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