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.
COMPOUND FOR ORGANIC ELECTRIC ELEMENT, ORGANIC ELECTRIC ELEMENT COMPRISING THE SAME AND ELECTRONIC DEVICE THEREOF
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Paragraph 0263-0267; 0288-0289; 0291, (2020/04/30)
The present invention relates to: a compound for an organic electric element; the organic electric element using the same; and an electronic device thereof. According to the present invention, it is possible to achieve high luminous efficiency, low driving voltage, and high heat resistance of an element, and to improve color purity and lifespan of the element. By using the compound according to the present invention, it is possible to achieve high luminous efficiency, low driving voltage, and high heat resistance of the element, and to provide an effect of improving color purity and lifespan of the element.(110) Substrate(120) Positive electrode(130) Hole injection layer(140) Hole transfer layer(141) Buffer layer(150) Light emitting layer(151) Light emitting auxiliary layer(160) Electron transfer layer(170) Electron injection layer(180) Negative electrodeCOPYRIGHT KIPO 2020
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.