Cationic Ir(III) Complexes Featuring Phenylimidazole-type Cyclometalated Ligands: Fluorine-Free Blue Phosphorescent Emitters for Light-Emitting Devices was written by Song, Yongjun;Yu, Renyou;Chen, Mengzhen;He, Lei. And the article was included in Inorganic Chemistry in 2021.HPLC of Formula: 914306-50-6 The following contents are mentioned in the article:
The development of blue emissive cationic Ir(III) complexes with no F substitutions but with sufficient blue-color purity and high phosphorescence efficiency has remained challenging. Here, F-free cyan to deep-blue emissive cationic Ir(III) complexes with phenylimidazole type cyclometalated ligands (CN̂) are reported, which are [Ir(dphim)2(dmapzpy)]PF6 (1), [Ir(ipr-dphim)2(dmapzpy)]PF6 (2), [Ir(ipr-dphim)2(bipz)]PF6 (3), and [Ir(ipr-dphim)2(bicb)]PF6 (4). 1,2-diphenyl-1H-imidazole (dphim) and 1-(2,6-diisopropylphenyl)-2-phenyl-1H-imidazole (ipr-dphim) are the phenylimidazole type CN̂ ligands, and 4-dimethylamino-2-(1H-pyrazol-1-yl)pyridine (dmapzpy), di(1H-pyrazol-1-yl)methane (bipz), and 3,3′-methylenebis(1-Me-1H-imidazol-3-ium-2-ide) (bicb) are the neutral ancillary ligands (AÂ). In both solution and diluted films, 1 shows cyan emission with the emission maximum at ∼472 and 495 nm, and 2–4 provide deep-blue emission with the emission maximum at ∼460 and 480 nm. While the complexes exhibit low to moderate phosphorescent efficiencies (0.05-0.35) in degassed MeCN solution, they exhibit high phosphorescent efficiencies (≤0.82) in diluted films. Theor. calculations revealed that the mixed 3π-π* (CN̂-centered)/3MLCT (Ir → CN̂) states are responsible for the emission afforded by 1–4, which undergo nonradiative deactivations induced by different types of metal-centered states. Organic light-emitting diodes (OLEDs) with 1–4 as phosphorescent dopants are fabricated by solution-process, which afford blue-green to blue emission with the emission maximum at ∼460 and 490 nm for the blue devices and a high current-efficiency at 28.1 cd A-1 for the blue-green device. Solid-state light-emitting electrochem. cells (LECs) are fabricated with 1–2 as phosphorescent dopants, which provide green-blue to blue emission with high luminance (up to 840 cd m-2) and current-efficiency (≤16.8 cd A-1) under a constant-current driving. By using phenylimidazole type CN̂ ligands and optimized AÂ ligands, blue emissive cationic Ir(III) complexes with no F substitutions but with sufficient blue-color purity and high phosphorescence efficiency can be developed. This study involved multiple reactions and reactants, such as 1-(2,6-Diisopropylphenyl)-2-phenyl-1H-imidazole (cas: 914306-50-6HPLC of Formula: 914306-50-6).
1-(2,6-Diisopropylphenyl)-2-phenyl-1H-imidazole (cas: 914306-50-6) belongs to imidazole derivatives. Many natural products, especially alkaloids, contain the imidazole ring. These imidazoles share the 1,3-C3N2 ring but feature varied substituents. Imidazole has been usedin the lysis, wash and elution buffer for the purification of histidine tagged Sonic Hedgehog(shh-N) protein, in elution buffer in stepwise gradient for the purification of histidine tagged aldo keto reductases using nickel affinity chromatography, as a component of homogenization buffer for the purification of phagosomal compartments from dendritic cells.HPLC of Formula: 914306-50-6
Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem