On July 14, 2017, Zhang, Zhaochao; Tang, Dandan; Li, Chong published a patent.Reference of 5-(4-Bromophenyl)pyrimidine The title of the patent was Organic compound based on triazine and benzimidazole as core and application in organic electroluminescence device. And the patent contained the following:
The invention disclosed a kind of organic compound based on triazine and benzimidazole as core, its preparation method and application in organic electroluminescence device. The claimed compound is shown in structure I (x = 1 or 2; z = 1 or 2; m,n = 0, 1, or 2, and m+n+z = 3; Ar1,Ar2,Ar3 = C1-10 alkyl, or halogen atom, protium, deuterium, tritium substituted or unsubstituted Ph, naphthyl, di-Ph or pyridyl, pyrimidyl, pyrazinyl, pyridazinyl, dibenzofuran, etc.; R1 = C1-10 alkyl, or halogen atom, protium, deuterium, tritium substituted or unsubstituted Ph, naphthyl, etc.; R2,R3 = (un)substituted benzoimidazoyl). The claimed compound is prepared via coupling etc. multiple steps (procedure given). The prepared compound has higher glass transition temperature and mol. thermal stability, low absorption and high refractive index in visible light field, and light extraction efficiency of OLED device can be effectively improved after the compound is applied to the CPL layer of OLED device. The prepared compound also has deep HOMO energy level and high electron mobility, and can be used as hole blocking / electron transport layer material for OLED device to effectively block hole or energy from being transmitted to the electron layer side from the luminescent layer, thus improving recombination efficiency of hole and electron in the luminescent layer so as to improve luminous efficiency and service life of OLED device. The experimental process involved the reaction of 5-(4-Bromophenyl)pyrimidine(cas: 160377-42-4).Reference of 5-(4-Bromophenyl)pyrimidine
The Article related to triazine benzimidazole based core derivative preparation coupling green oled, Heterocyclic Compounds (More Than One Hetero Atom): Triazines and other aspects.Reference of 5-(4-Bromophenyl)pyrimidine
Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia