Sky-Blue-Emitting Dendritic Alkynylgold(III) Complexes for Solution-Processable Organic Light-Emitting Devices

A new class of tridentate ligand-containing cyclometalated gold­(III) complexes featuring dendritic alkynyl ligands with carbazole moieties as dendrons and peripheral groups has been synthesized up to the third generation. High-performance solution-processable organic light-emitting devices (OLEDs)...

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Bibliographic Details
Published in:Journal of the American Chemical Society 2017-08, Vol.139 (30), p.10539-10550
Main Authors: Lee, Chin-Ho, Tang, Man-Chung, Wong, Yi-Chun, Chan, Mei-Yee, Yam, Vivian Wing-Wah
Format: Article
Language:English
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Summary:A new class of tridentate ligand-containing cyclometalated gold­(III) complexes featuring dendritic alkynyl ligands with carbazole moieties as dendrons and peripheral groups has been synthesized up to the third generation. High-performance solution-processable organic light-emitting devices (OLEDs) with maximum current efficiency of up to 23.7 cd A–1 and external quantum efficiency of up to 6.9% have been realized by a simple spin-coating technique. With the incorporation of bulky carbazole moieties to form higher generation dendrimers, the undesirable excimeric emission could be effectively reduced, allowing the fine-tuning of the emission color toward the blue region. This represents the first successful demonstration of sky-blue-emitting alkynylgold­(III) complexes and its application in solution-processable OLEDs.
ISSN:0002-7863
1520-5126
DOI:10.1021/jacs.7b05872