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Bimetallic Cyclometalated Iridium(III) Diastereomers with Non-Innocent Bridging Ligands for High-Efficiency Phosphorescent OLEDs

Zheng, Y.; Batsanov, A.S.; Fox, M.A.; Al-Attar, H.A.; Abdullah, K.; Jankus, V.; Bryce, M.R.; Monkman, A.P.

Bimetallic Cyclometalated Iridium(III) Diastereomers with Non-Innocent Bridging Ligands for High-Efficiency Phosphorescent OLEDs Thumbnail


Authors

Y. Zheng

A.S. Batsanov

H.A. Al-Attar

K. Abdullah

V. Jankus



Abstract

Two phosphorescent dinuclear iridium(III) diastereomers (ΛΔ/ΔΛ) and (ΛΛ/ΔΔ) are readily separated by making use of their different solubilities in hot hexane. The bridging diarylhydrazide ligand plays an important role in the electrochemistry and photophysics of the complexes. Organic light-emitting devices (OLEDs) that use these complexes as the green-emissive dopants in solution-processable single-active-layer architectures feature electroluminescence efficiencies that are remarkably high for dinuclear metal complexes, achieving maximum values of 37 cd A−1, 14 lm W−1, and 11 % external quantum efficiency.

Citation

Zheng, Y., Batsanov, A., Fox, M., Al-Attar, H., Abdullah, K., Jankus, V., …Monkman, A. (2014). Bimetallic Cyclometalated Iridium(III) Diastereomers with Non-Innocent Bridging Ligands for High-Efficiency Phosphorescent OLEDs. Angewandte Chemie International Edition, 53(43), 11616-11619. https://doi.org/10.1002/anie.201407475

Journal Article Type Article
Online Publication Date Sep 11, 2014
Publication Date Oct 20, 2014
Deposit Date Nov 13, 2014
Publicly Available Date Sep 13, 2015
Journal Angewandte Chemie International Edition
Print ISSN 1433-7851
Electronic ISSN 1521-3773
Publisher Wiley
Peer Reviewed Peer Reviewed
Volume 53
Issue 43
Pages 11616-11619
DOI https://doi.org/10.1002/anie.201407475
Keywords Diastereomers, Iridium, Ligand design, Luminescence, OLEDs.

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Accepted Journal Article (572 Kb)
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Copyright Statement
This is the accepted version of the following article: Zheng, Y., Batsanov, A. S., Fox, M. A., Al-Attar, H. A., Abdullah, K., Jankus, V., Bryce, M. R. and Monkman, A. P. (2014), Bimetallic Cyclometalated Iridium(III) Diastereomers with Non-Innocent Bridging Ligands for High-Efficiency Phosphorescent OLEDs. Angewandte Chemie International Edition, 53 (43): 11616–11619 which has been published in final form at http://dx.doi.org/10.1002/anie.201407475. This article may be used for non-commercial purposes in accordance With Wiley Terms and Conditions for self-archiving.





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