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 1 2016
Accepted
04 2 2016
First published
04 2 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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