In 2019 ACS APPL POLYM MATER published article about MICROWAVE-ASSISTED POLYCONDENSATION; LIGHT-EMITTING-DIODES; ELECTROLUMINESCENCE; OXIDATION; PURE in [Kodama, Shunsuke] Hitachi Chem Co Ltd, Adv Technol Res & Dev Ctr Shimodate, 1919 Morisoejima, Chikusei City, Ibaraki 3080861, Japan; [Kuwabara, Junpei; Jiang, Xin; Kanbara, Takaki] Univ Tsukuba, Grad Sch Pure & Appl Sci, Tsukuba Res Ctr Energy Mat Sci TREMS, 1-1-1 Tennodai, Tsukuba, Ibaraki 3058573, Japan; [Fukushima, Iori] Hitachi Chem Co Ltd, Adv Technol Res & Dev Ctr, 48 Wadai, Tsukuba, Ibaraki 3004247, Japan in 2019, Cited 31. The Name is 4,4′-Dibromobiphenyl. Through research, I have a further understanding and discovery of 92-86-4. Computed Properties of C12H8Br2
Poly(arylamine)s were synthesized by poly-condensation of 4-n-octylaniline with 4,4′-dibromobiphenyl using the Buchwald-Hartwig aryl amination. Both the NH and the Br end groups were properly modified upon addition of an end-capping reagent in an appropriate ratio. The synthesized polymers contained many impurities, such as Pd, Br, and Cl, which decrease organic light-emitting diode performance. An investigation to reduce the impurities in the polymer showed that the purification solvent plays the key role in reducing the concentration of impurities in the polymer; purification with a nonchlorinated solvent, anisole, provided a highly pure poly(arylamine) even with a simple purification procedure. Moreover, the highly purified polymer material improved carrier mobility in hole-only devices.
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Reference:
Benzoxazole – Wikipedia,
,Benzoxazole | C7H5NO – PubChem