On July 21, 2017, Zhang, Zhaochao; Li, Chong; Tang, Dandan; Jin, Weixin; Wang, Miao published a patent.Electric Literature of 63931-21-5 The title of the patent was Organic compounds based on pyridine and benzimidazole use as OLED device. And the patent contained the following:
The present invention provides chem. structural formula I of the organic compound, in which X1-X6 independently represents N or C atom, the number of N atoms is 2; p is 0, 1, 2, 3 or 4; m or n independently represents 0, 1, 2 or 3, m+n+z=4, Ar1-3 independently represents C1-10 linear chain or branched chain alkyl, halogen atom, protinium, deuterium, triterium atom substituted or unsubstituted Ph, naphthyl, anthracyl or pyridyl; pyrimidyl, pyrazinyl, pyridazinyl, dibenzopyrane, 9,9-di-Me fluorene, N-Ph carbazole, quinolyl, isoquinolyl or naphthyridinyl, Ar1 also represents single bond etc. The compound of this invention has higher glass transition temperature and mol. heat endurance; and it has low absorptivity and high refractive index in visible light domain. After applied to the CPL layer of OLED device, title compound can effectively enhance the light extraction efficiency of OLED device. The compound of this invention also has deep HOMO energy level and high electron mobility, so it can be used as material of hole barrier/electron transport layer of OLED device, and can effectively stop the conveyance of hole or energy from luminescent layer to electronic shell side, so as to enhance the compounding efficiency of hole and electron in luminescent layer, and enhance the luminous efficiency and service life of OLED device. The experimental process involved the reaction of 5-Bromo-2,4,6-trichloropyrimidine(cas: 63931-21-5).Electric Literature of 63931-21-5
The Article related to pyridine benzimidazole oled, Heterocyclic Compounds (More Than One Hetero Atom): Pyrazines and Quinoxalines (Including Piperazines) and other aspects.Electric Literature of 63931-21-5
Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia