86-76-0Relevant articles and documents
Triphenylene-based host materials for low-voltage, highly efficient red phosphorescent organic light-emitting diodes
Togashi, Kazunori,Yasuda, Takuma,Adachi, Chihaya
, p. 383 - 385 (2013)
Triphenylene-based host materials BDBF-TP and BDBT-TP were synthesized for use in red phosphorescent organic lightemitting diodes (PHOLEDs). The currentvoltage characteristics of hole- and electron-only devices revealed that BDBT-TP exhibits better bipolar carrier transport properties than 4,4'- bis(carbazol-9-yl)-1,1'-biphenyl and BDBF-TP. Red PHOLEDs containing BDBF-TP or BDBT-TP as the host showed a lower driving voltage, higher external quantum efficiency, and lower efficiency roll-off at high current density.
Synthesis of Dibenzofurans by Cu-Catalyzed Deborylative Ring Contraction of Dibenzoxaborins
Sumida, Yuto,Harada, Ryu,Sumida, Tomoe,Johmoto, Kohei,Uekusa, Hidehiro,Hosoya, Takamitsu
, p. 6687 - 6691 (2020/09/02)
An efficient transformation of dibenzoxaborins to dibenzofurans by deborylative ring contraction was achieved under mild conditions using a copper catalyst. The method showed a broad substrate scope enabling the preparation of various dibenzofurans, including those bearing a functional group. The ready availability of various dibenzoxaborins enhances the utility of this method, as demonstrated by the regiodivergent synthesis of dibenzofurans.
Method for preparing 2-bromodibenzofuran in environmental protection way
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Paragraph 0027-0030, (2019/04/02)
The invention discloses a method for preparing 2-bromodibenzofuran in an environmental protection way. The method comprises the steps of adding hydrogen peroxide into a mixing system formed by a dichloroethane solution of dibenzofuran and a water solution of hydrobromic acid, stirring for reaction to obtain the 2-bromodibenzofuran. Compared with an existing preparation method of the 2-bromodibenzofuran, according to the method provided by the invention, bromine can be fully utilized, so that the waste of the bromine and the production of a large number of acid waste liquid are avoided, the environment pollution is reduced, and the method is simple in operation and low in cost.