185112-61-2Relevant articles and documents
Synthesis of pyrimidine-cored host materials bearing phenylcarbazole for efficient yellow phosphorescent devices: Effect of linkage position
Jang, Hong-Gu,Song, Wook,Lee, Jun Yeob,Hwang, Seok-Ho
, p. 17030 - 17033 (2015)
Two isomeric host materials were synthesized and their photophysical properties and device performances were investigated. In particular, para-substituted pPDPC exhibited the most intense efficiency regardless of the low triplet energy compared to that of meta-substituted mPDPC. The EQE of the pPDPC device reached as high as 22.3% with a yellow color coordinate of (0.49, 0.50). This journal is
Efficient orange-red phosphorescent organic light-emitting diodes using an in situ synthesized copper(i) complex as the emitter
Wei, Feng,Qiu, Jacky,Liu, Xiaochen,Wang, Jianqiang,Wei, Huibo,Wang, Zhibin,Liu, Zhiwei,Bian, Zuqiang,Lu, Zhenghong,Zhao, Yongliang,Huang, Chunhui
, p. 6333 - 6341 (2014)
Inexpensive and eco-friendly luminescent Cu(i) complexes are ideal phosphorescent emitters for high efficiency organic light-emitting diodes (OLEDs). A series of pyrazinyl carbazole (CPz) compounds were designed and synthesized to obtain efficient luminescent Cu(i) complexes through reaction with CuI using a vacuum codeposition method. Based on photophysical studies of the CPz compounds and their codeposited CuI-CPz films, the compound 9-(3-(6-(carbazol-9-yl)pyrazin-2-yl)phenyl)-carbazole (CPzPC) with CuI was chosen as the emissive layer for OLED fabrication, where the emitter was identified as Cu2(μ-I)2(CPzPC)4 on the basis of X-ray absorption spectroscopy. After optimizing the device architecture and material selection including the CuI doping concentration and hole transporting layer, an efficient orange-red emitting OLED with a maximum emission band, an external quantum efficiency (EQE), and a luminance of 590 nm, 6.6% and 8619 cd m-2 (10 V), respectively, was achieved.
Method for synthesizing N-aryl carbazole compound by catalyzing reaction of carbazole with aryl hydrazine by using transition metal
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Paragraph 0089-0092; 0101, (2020/12/14)
The invention relates to a method for synthesizing an N-aryl carbazole compound by catalyzing reaction of carbazole with aryl hydrazine through transition metal. According to the method, a transitionmetal salt is used as a catalyst, a carbazole compound and an aryl hydrazine compound are used as reaction substrates, the reaction substrates and an alkali compound are added into a solvent for a reaction for a certain period of time to obtain a reaction solution, and the reaction solution is separated and purified to obtain the N-aryl carbazole compound. According to the method, low-boiling-point acetonitrile is used as a reaction solvent, so post-reaction treatment is easy to carry out; oxygen in the air serves as an oxidizing agent, so reaction conditions are environmentally friendly and safe, cost is low, and excessive oxidation is avoided; an aryl hydrazine compound is used as an arylation reagent, and reaction byproducts only comprise water and nitrogen, so the method is environment-friendly and pollution-free; the transition metal salt is used as the catalyst, the activity of the transition metal salt is high, the use of equivalent noble metals is avoided, and synthesis cost isreduced; and generally speaking, the synthesis method is friendly to environment, simple in process, good in reaction selectivity and high in yield, and has a relatively strong industrial applicationprospect.
HETEROCYCLIC COMPOUND AND ORGANIC LIGHT-EMITTING DEVICE INCLUDING THE SAME
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Paragraph 0298-0300, (2020/09/09)
A heterocyclic compound represented by Formula 1: and an organic light-emitting device including the same are provided.