On July 5, 2018, Groarke, Michelle; Shiomi, Takushi; Kawamura, Masahiro; Nagashima, Hideaki published a patent.Electric Literature of 75449-26-2 The title of the patent was Nitrogen-containing heterocyclic compounds for organic light emitting devices. And the patent contained the following:
A compound represented by a chem. formula I (A1, A2, A3 = (un)substituted C6-C30 ring aromatic hydrocarbon, (un)substituted C5-C30 heterocyclic group; Z1 = N, CR1; R1 = H, (un)substituted C1-C30 alkyl, (un)substituted C3-C30 cycloalkyl etc.; B1 = H, CN, (un)substituted C6-C30 ring aromatic hydrocarbon, etc.; L = single bond, (un)substituted alkylene having C1-C30; (un)substituted C3-C30 cycloalkylene; l = 1, 2 or 3), a material for an organic electroluminescence device comprising at least one compound of formula I; an organic electroluminescence device which comprises an organic thin film layer between a cathode and an anode, wherein the organic thin film layer comprises one or more layers and comprises a light emitting layer, and at least one layer of the organic thin film layer comprises at least one compound with formula I; an electronic equipment. The experimental process involved the reaction of [2,2′-Bipyridine]-3,3′-diamine(cas: 75449-26-2).Electric Literature of 75449-26-2
The Article related to nitrogen heterocyclic organic light emitting device electroluminescent material, Optical, Electron, and Mass Spectroscopy and Other Related Properties: Spectrometers and Optical Apparatus and other aspects.Electric Literature of 75449-26-2