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.
Nitrogen-containing compound, electronic element and electronic device
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Paragraph 0078; 0079, (2020/05/01)
The invention provides a nitrogen-containing compound, an electronic component and an electronic device, and relates to the technical field of organic materials, wherein the nitrogen-containing compound is represented by a formula I, X is selected from oxygen and sulfur, R is selected from heterocycloalkyl and heteroaryl, L is selected from a single bond, arylene and heteroarylene, the substituentof R is selected from deuterium, nitro, hydroxyl, alkyl, cycloalkyl, alkenyl, alkynyl, aryl, heteroaryl, heterocycloalkyl, alkoxy, aryl silyl and alkyl silyl, and the substituent of L is selected from deuterium, nitro, hydroxyl, alkyl, cycloalkyl, alkenyl, alkynyl, heterocycloalkyl, alkoxy, alkylsilyl, arylsilyl, aryloxy and arylthio. The nitrogen-containing compound disclosed by the invention can reduce the working voltage of an electronic component, improve the efficiency of a device and prolong the service life of the device.
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.