On July 16, 2015, Stoessel, Philipp; Koenen, Nils published a patent.Recommanded Product: 6-(tert-Butyl)pyridin-3-amine The title of the patent was Cyclometalated arylpyridine and arylbenzimidazolylidene metal complexes as electroluminescent materials for organic light-emitting devices. And the patent contained the following:
Cyclometalated iridium complexes [(Q1-Q2)3Ir] (1), [(Q1-Q2)2(Q3-Q4)Ir] (2) and [(Q1-Q2)2IrL] (3; for 1-3: Q1, Q3 = substituted pyridinyl-κN, quinolinyl-κN, isoquinolinyl-κN, benzimidazolylidene-κC2; Q2, Q4 = substituted aryl-κC2; L = acetylacetonato, dipivaloylmethanato), useful as triplet-emitting dopants for light-emitting layers of organic electroluminescent devices (OLEDs), featuring better solubility in organic solvents and enhanced stability, were prepared by conventional cyclometalation, ligand substitution and derivatization reactions and tested for performance and electrooptical characteristics by manufacturing test OLEDs according to standard protocols. The homoleptic complexes 1 were prepared by cyclometalation of the corresponding ligands Q1-Q2H with [Ir(acac)3], typically as fac-isomers. The heteroleptic tris-cyclometalated complexes 2 were prepared via cationic intermediates [(Q1-Q2)2Ir(HOMe)2][OTf] (4), which were results of halogen abstraction and methanolysis of iridium dimers [(Q1-Q2)4Ir2(μ-Cl)2] (5), by cyclometalation of the ligands Q3-Q4H with 4. The complexes of the type 3 were prepared by complexation of dimers 5 or methanol complexes 4 with the β-diketones HL. The ligands in the some of the complexes 1 or 2 were modified by bromination, borylation and coupling reaction sequence; the bromides [(Q1-Q2-Br)3Ir] (6) were arylated via Suzuki coupling with arylboronates or converted into aromatic amines [(Q1-Q2-NR2)3Ir] (R = aryl, or NR2 = substituted 9-carbazolyl) by Buchwald amination reaction with amines HNR2 or carbazoles. The bromides 6 were also used as comonomers in Suzuki polymerization of arene and carbazole dibromides with arylenediboronates, giving electroluminescent polyarylene-polycarbazoles containing up to 10% of [(Q1-Q2)3Ir] structural fragments. In an example, reaction of 10 mmol of Na[(acac)2IrCl2] with 40 mmol of the proligand, 2-(1,2,3,4-tetrahydro-1,4-ethano-6-naphthyl)pyridine (H-LB1) in the presence of 3-10 g of propylene glycol as solvent at reflux for 100 h gave the reaction mixture, which was diluted with 50 mL of EtOH and 50 mL of 2 N HCl, the product was filtered off, and purified by EtOAc extraction to give the invented complex [(LB1)3Ir] (1a) with 49% yield. The experimental process involved the reaction of 6-(tert-Butyl)pyridin-3-amine(cas: 39919-70-5).Recommanded Product: 6-(tert-Butyl)pyridin-3-amine
The Article related to iridium cyclometalated arylpyridine arylquinoline arylisoquinoline arylbenzimidazole complex preparation electroluminescence, electroluminescent material iridium cyclometalated complex preparation luminescence oled manufacturing, bromination borylation suzuki buchwald coupling derivatization iridium cyclometalated complex and other aspects.Recommanded Product: 6-(tert-Butyl)pyridin-3-amine