On February 13, 2014, Stoessel, Philipp; Joosten, Dominik; Breuning, Esther; Kaiser, Joachim published a patent.Electric Literature of 39919-70-5 The title of the patent was Cyclometalated iridium and platinum complexes as phosphorescent emitters for organic electroluminescent devices. And the patent contained the following:
Iridium and platinum complexes with bi- and tridentate cyclometalated ligands [(Cy1-Cy2-Q)mMLn] (1, Cy1, Cy2 = preferably aromatic cycles, condensed with aliphatic bicyclic systems, bound through heteroatom and carbon, resp., preferably, pyridine, quinoline, phenanthridine, azole derivatives, Q = optional donor-containing group, L = auxiliary ligand; preferably, L = acetylacetonato, picolinato), useful as triplet-emitting dopants or additives for light-emitting layers in organic light-emitting devices, preferably short-wave emitters, as green or blue emitters, were prepared by cyclometalation of the corresponding proligands Cy1-Cy2H-Q with properly chosen metal precursors, such as PtCl2, K2PtCl4, PtCl2(DMSO), PtMe2(DMSO)2, PtCl2(NCPh)2, and subsequent ligand substitution for introduction of the auxiliary ligands L. In an example, solvent-free reaction of 10 mmol of tris(acetylacetonato)iridium with 60 mmol of 1-(1,1,2,2,3,3-tetramethyl-5-indanyl)isoquinoline for 100 h at 230° gave the invented complex (1a, shown as I) with 42% yield. In another example, test electroluminescent device, manufactured according to standard procedure with a light-emitting layer doped with 5% of the complex 1a exhibited electroluminescence with external quantum efficiency of 15.5% at 1000 cd/m2 at working voltage of 3.0 V with CIE(x,y) coordinates of 0.68,0.32 featuring lifetime of 18000 h. The experimental process involved the reaction of 6-(tert-Butyl)pyridin-3-amine(cas: 39919-70-5).Electric Literature of 39919-70-5
The Article related to iridium platinum cyclometalated heterocyclic bicyclic complex preparation phosphorescent emitter, electroluminescent device organic platinum iridium cyclometalated complex emitter and other aspects.Electric Literature of 39919-70-5