18992-65-9Relevant academic research and scientific papers
Site-Specific Synthesis of Carbazole Derivatives through Aryl Homocoupling and Amination
Baek, Junghyun,Ban, Jaeyoung,Lim, Minkyung,Rhee, Hakjune,Shabbir, Saira
, p. 917 - 927 (2020/03/13)
We synthesized various carbazoles from anilines through a three-step process with good overall yields (up to 48percent). This process comprises N -acetylation, copper(0)-mediated Ullmann homocoupling, and acid-mediated intramolecular amination. It permits various functional groups on the substrate. Scale-up of the developed three-step synthetic route to carbazoles was also demonstrated.
Synthesis method of 2,7-dimethyl-9H-carbazole
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Paragraph 0028; 0031-0033; 0036-0038; 0041-0042, (2019/11/20)
The invention belongs to the technical field of organic photoelectric materials, and relates to a synthesis method of 2,7-dimethyl-9H-carbazole. The synthesis method comprises the steps: 4,4'-dimethylbiphenyl is nitrified to manufacture 2-nitryl-4,4'-dimethylbiphenyl, after separating out and drying, the 2-nitryl-4,4'-dimethylbiphenyl is mixed with triethyl phosphite under nitrogen protection to generate a ring-forming reaction, finally, a mixture is washed through a silicagel column, and the 2,7-dimethyl-9H-carbazole is obtained. The step of heating at more than 100 DEG C is omitted, thus consumed heat is less, the yield of the obtained product reaches 85% or above, and the purity of the obtained product reaches 99% or above.
Carbazole derivative and material and organic light-emitting device comprising same
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Paragraph 0079; 0085; 0086; 0087, (2018/09/12)
The invention discloses a carbazole derivative and a material and an organic light-emitting device comprising the same. The carbazole derivative adopts a structural formula as follows: FORMULA. The carbazole derivative provided by the invention is soluble in an organic solvent, and has relatively high glass transition temperature, high heat stability and good carrier transport capacity. The carbazole derivative has a simple synthesis technology and a simple purification method and has the characteristics of suitability for large-scale production and the like, and through connection with different groups, the molecular energy level can be adjusted and the light-emitting property, the heat stability and the like are regulated, so that the carbazole derivative is an ideal choice as an organiclight-emitting device material. The light-emitting device prepared from the carbazole derivative provided by the invention has high light-emitting efficiency, good stability and a longer service life, so that the light-emitting efficiency and the service life of the device can meet a requirement on practicality.
Solution spraying OLED (Organic Light-Emitting Diode) material
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Paragraph 0079; 0080; 0081, (2016/10/10)
The invention discloses a series of solution spraying OLED (Organic Light-Emitting Diode) materials. The structures of the materials are shown in formula I. The materials shown in the formula I have the characteristics of being easily soluble in an organic solvent and good in the heat stability, are applied to preparing lighting equipment by modes of fluid manufacturing processes such as print, instilling, coating, printing and the like. An organic light-emitting device prepared by utilizing the materials through a coating method has the characteristics that the power efficiency is good, the material utilization is high, the manufacturing cost of the organic light-emitting device is greatly reduced, material synthesis and purification methods are simple, the materials are suitable for large scale production, and the like, and are ideal selections of light-emitting materials of the organic light-emitting device. The application of organic light emitting diode materials as host materials in an luminescent layer or doped materials or independent light-emitting materials or hole-transport materials or electron transport materials is in the scope of protection. The chemical formula is shown in the description.
Series of carbazole derivatives
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Paragraph 0072; 0077-0079, (2016/11/24)
The invention discloses a series of OLED materials of carbazole derivatives, a preparation method thereof, and an application of the materials in organic light-emitting diodes. The structure of the materials is represented by formula I. The materials represented by the formula I have the characteristics of good thermal stability, narrow emission peaks, high triplet state energy level and high quantum efficiency. Organic electroluminescent devices made by using the materials have the advantages of good power efficiency and long life, and the synthesis and purification method of the materials is simple and is suitable for large scale production, so the materials are ideal luminescent materials for the organic electroluminescent devices. The invention also discloses an application of the organic electroluminescent diode materials in luminescent layers as a host material or as a doping material or individually as a luminescent material or as a hole transfer material or as an electron transfer material.
Palladium-catalyzed direct synthesis of carbazoles via one-pot N-arylation and oxidative biaryl coupling: Synthesis and mechanistic study
Watanabe, Toshiaki,Oishi, Shinya,Fujii, Nobutaka,Ohno, Hiroaki
experimental part, p. 4720 - 4726 (2009/10/02)
(Chemical Equation Presented) An efficient catalytic system has been developed for the synthesis of carbazoles by one-pot N-arylation and oxidative biaryl coupling. A significant substituent effect of the diarylamine intermediate on oxidative coupling was observed. Mechanistic studies of oxidative coupling, including trapping of reaction intermediates and kinetic isotope effect experiments, are also presented.
9,9'- AND 2,2'-SUBSTITUTED 3,3'-BICARBAZOLYL DERIVATIVES FOR USE IN SEMICONDUCTING MATERIALS AS A HOST MATRIX FOR PHOSPHORESCENT EMITTERS
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Page/Page column 8, (2008/12/05)
The present invention relates to carbazole compounds of formula (I) and a semiconducting material comprising such carbazole compounds. It also relates to a process for the preparation of such carbazole compounds, as well as to the use thereof as a semicon
The Chemistry of Carbazoles. VII. Syntheses of Methylcarbazoles
Kuroki, Masanate,Tsunashima, Yutaka
, p. 709 - 714 (2007/10/02)
Thirty-six methylcarbazoles were prepared, and their synthetic methods were critically described.
