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Bis(2-(3,5-dimethylphenyl)quinoline-C,N)(acetylacetonato)iridium(III), also known as Ir(dmpq)2(acac), is a highly efficient red phosphorescent emitter that is employed as a dopant material in organic light-emitting diodes (OLEDs).
Compared with Ir(phq)2acac, Ir(dmpq)2(acac) has a higher quantum efficiency. The dmpq ligand is methylated version of the phq (2-phenylquinoline) ligand, with methyl substitutions on the phenyl group. It is believed that the higher efficiency is a result of this methylation of the phq ligand.
Highly Efficient Red Phosphorescent Dopants in Organic Light-Emitting Devices, D. Kim et al., Adv. Mater., 23, 2721–2726 (2011); DOI: 10.1002/adma.201100405.
Low Roll-Off and High Effi ciency Orange Organic Light Emitting Diodes with Controlled Co-Doping of Green and Red Phosphorescent Dopants in an Exciplex Forming Co-Host, S. Lee et al., Adv. Funct. Mater., 23, 4105–4110 (2013); DOI: 10.1002/adfm.201300187.
High efficiency and non-color-changing orange organic light emitting diodes with red and green emitting layers, S. Lee et al., Org. electronics, Organic 14, 1856–1860 (2013); http://dx.doi.org/10.1016/j.orgel.2013.04.020.
Enhanced Outcoupling in Organic Light-Emitting Diodes via a High-Index Contrast Scattering Layer, T-W. Koh et al., ACS Photonics, 2, 1366−1372 (2015); DOI: 10.1021/acsphotonics.5b00346.
Phosphorescent dye-based supramolecules for high-efficiency organic light-emitting diodes, K-H. Kim et al., Nat. commun., 5, 4769; DOI: 10.1038/ncomms5769.
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