On February 8, 2022, Li, Zhongqing; Hu, Jianjun; Zhang, Xiaoling; Hang, Deyu; Ban, Quanzhi; Cheng, Dandan; Duan, Lumeng published a patent.Product Details of 1268137-13-8 The title of the patent was Preparation of fluorene azole based compound and its applications in OLEDs. And the patent contained the following:
The present invention relates to the preparation of fluorene azole based compound and its applications in OLEDs. In particular, the fluorene azole based compound I (wherein, X and Y = -N=, -O- or -S-, and X and Y are not at the same time -N=; R1-R9 = H, halogen, (un)substituted C1-C20 chain alkyl, (un)substituted C3-C20 cycloalkyl, (un)substituted C1-C20 alkoxy or (un)substituted C6-C60 aryl groups, (un)substituted C3-C60 heteroaryl groups containing heteroatoms and having electron withdrawing properties; the heteroatom in the heteroaryl group with electron withdrawing property is selected from N, O or S, and includes at least one nitrogen atom). Further, (R1-R9 are not H at the same time, and at least one of R1-R9 is (un)substituted C3-C60 heteroaryl group containing a heteroatom and having electron-withdrawing properties; the two adjacent groups in R1 to R9 are not connected to each other or the rings are connected by chem. bonds; when each of the (un)substituted groups in R1-R9 has a substituent group, the substituent group is selected from D, halogen, C1-C20 chain alkyl etc.) was prepared The inventive product is applied to OLED device, and the device exhibits advantages of low driving voltage and high emission efficiency. The experimental process involved the reaction of 7-Bromo-2-phenylbenzo[d]oxazole(cas: 1268137-13-8).Product Details of 1268137-13-8
The Article related to fluorene azole compound preparation electron transport material oled, Heterocyclic Compounds (More Than One Hetero Atom): Thiazoles, Isothiazoles and other aspects.Product Details of 1268137-13-8
Referemce:
Benzoxazole – Wikipedia,
Benzoxazole | C7H5NO – PubChem