Journal
POLYHEDRON
Volume 140, Issue -, Pages 146-157Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.poly.2017.11.029
Keywords
Dinuclear iridium(III) complexes; Organic light emitting devices; Light emitting electrochemical cells; Luminescence; Electroluminescence
Categories
Funding
- NSFC [51473028]
- key scientific and technological project of Jilin province [20150204011GX, 20160307016GX]
- Development and Reform Commission of Jilin province [20160058]
- EPSRC (UK) [EP/L02621X/1]
- Engineering and Physical Sciences Research Council [1494307] Funding Source: researchfish
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In contrast to mononuclear iridium(III) complexes, dinuclear iridium(III) complexes have been less well studied, especially as dopants in phosphorescent organic light-emitting devices (PhOLEDs). This is largely a consequence of the established view that dinuclear iridium(III) complexes are poorly emissive and give unsatisfactory device performance. However, this is not always the case. In this review, recent advances in dinuclear iridium(III) complexes and their applications in OLEDs are discussed. Systems with bridges comprising bis(mu-Cl), bis(ji-NCO), N boolean AND N, N boolean AND O and C boolean AND N structures are included. The relationships between chemical structures and luminescent properties are presented. Additionally, recent reports of good electroluminescence (EL) performance of dinuclear iridium(III) emitters demonstrate that rationally designed diiridium complexes present a feasible alternative to typical monoiridium systems in optoelectronic applications, with the bridging ligands providing additional structural versatility. (C) 2017 Elsevier Ltd. All rights reserved.
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