1698-16-4Relevant articles and documents
Compound and application thereof, and organic electroluminescent device comprising compound
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Paragraph 0132-0133; 0135-0137; 0150-0152; 0156-0158, (2021/02/24)
The invention relates to a compound and application thereof, and an organic electroluminescent device comprising the compound, wherein the compound has a structure shown as a formula (I). According tothe invention, the parent nucleus of the compound provided by the invention is formed by fusing carbazole and an aromatic ring or an aromatic heterocyclic ring, so that the ET of the compound is slightly reduced due to the expansion of the conjugated system, and the injection barrier of charges is reduced so as to make the molecule provided by the invention have lower voltage and higher efficiency; and quinazoline and triazine are matched to serve as electron withdrawing groups, so that carrier transmission in the device is relatively balanced, efficiency roll-off is not easy to cause, the efficiency of the device is obviously improved, and the service life of the device is obviously prolonged.
An electroluminescen compound and an electroluminescent device comprising the same
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Paragraph 0336; 0345-0348; 0634; 0659-0662, (2021/02/02)
The present invention relates to an organic light-emitting compound represented by chemical formula 1. An organic electroluminescent device comprising the organic light-emitting compound in the present invention has excellent power efficiency, light-emitting efficiency, and long life cycle because the present invention can be operated by a lower driving-voltage in comparison with a device comprising conventional phosphorescent host materials.
A 10 - bromo - 7H - benzo [c] carbazole preparation method (by machine translation)
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, (2019/10/17)
The invention discloses a 10 - bromo - 7 H - benzo [c] carbazole preparation method, comprises the following raw materials: 2 - naphthol: 260 g; hydrazine hydrate (80%): 520 g; water: 500 g; toluene: 750 ml; concentrated hydrochloric acid: 100 ml; 2 - naphthylhydrazine hydrochloride: 164 g; methanol: 968 ml; cyclohexanone: 91 g; cold methanol: 250 ml; 5, 6, 7, 8 - tetrahydro - 3, 4 - benzo-carbazole: 98.3 g; toluene: 700 ml; DDQ: 201.9 g; ethanol: 200 ml; benzo [c] carbazole: 65.1 g; dichloromethane: 600 ml; NBS: 54 g; toluene: 450 ml; activated carbon: 3 g; four reaction bottle: several, specific reaction steps are: (1). 2 - naphthol and 2 times weight of hydrazine hydrate (80%), reflux reaction 20 h, after processing by the dilute hydrochloric acid, to obtain 2 - naphthylhydrazine hydrochloride. The invention pollution is small, low cost, high yield, use of cheap and easily obtained raw materials, through the four-step reaction, to obtain the target compound, the total yield of products is relatively high; simple process operation, little three-waste discharge, is suitable for the large-scale production. (by machine translation)