Sky Blue-Emitting Iridium(III) Complexes Bearing Nonplanar Tetradentate Chromophore and Bidentate Ancillary.

Author(s) Li, Y.S.; Liao, J.L.; Lin, K.T.; Hung, W.Y.; Liu, S.H.; Lee, G.H.; Chou, P.T.; Chi, Y.
Journal Inorg Chem
Date Published 2017 Aug 21
Abstract

Tetradentate chelates bearing tripodal arranged terpyridine and a functional pyrazole unit (i.e., L1-H and L2-H) were employed in preparation of Ir(III) complexes [Ir(L1)Cl2] (1) and [Ir(L2)Cl2] (2); subsequent chloride-to-bipyrazolate substitution gave [Ir(L1)(bipz)] (3) and [Ir(L2)(bipz)] (4). Single-crystal X-ray structural studies on 1 and 3 showed the possession of a tetradentate chelate, whereas the remaining cis-sites are occupied by either dual chlorides or the bipz chelate, respectively. Sky blue organic light-emitting diode with peak efficiencies (10.1%, 19.8 cd·A(-1), and 20.4 lm·W(-1)) was successfully fabricated using 3 (or 4) as dopant emitter, highlighting the potential application of this class of Ir(III) phosphor.

DOI 10.1021/acs.inorgchem.7b01583
ISSN 1520-510X
Citation Li Y-, Liao J-, Lin K-, Hung W-, Liu S-, Lee G-, et al. Sky Blue-Emitting Iridium(III) Complexes Bearing Nonplanar Tetradentate Chromophore and Bidentate Ancillary. Inorg Chem. 2017;56(16):10054-10060.