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Organic luminescent material, preparation method thereof and organic electroluminescence device containing organic luminescent material
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A luminescent material and organic technology, applied in luminescent materials, electrical solid devices, electrical components, etc., can solve the problems of color purity, efficiency and thermal stability, difficult material application display, blue color purity is not high enough, etc., to achieve excellent Effect of electroluminescent properties, proper color coordinates, long device lifetime
Inactive Publication Date: 2019-02-22
JILIN OPTICAL & ELECTRONICS MATERIALS
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However, because the blue color purity of the material is not high enough, it is difficult to apply the material to a high-quality display
Moreover, there is an urgent need to research and develop such materials because of the problems of color purity, efficiency and thermal stability
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preparation example Construction
[0064] Step 1, the preparation of intermediate 1
[0065] Add compound 1, N-bromosuccinimide and dichloromethanesolvent into the reaction vessel, stir the mixture at room temperature, when the reaction is complete, add water to it, extract the mixture with dichloromethane, and filter the extract under reduced pressure , the obtained compound is recrystallized from ethanol to obtain intermediate 1;
[0066] Step 2, the preparation of intermediate 2
[0067] Intermediate 1, Pd 2 (dba) 3 , biboronic acid pinacol ester and potassium acetate were dissolved in 1,4-dioxane, and in a nitrogenatmosphere, the reactants were refluxed and stirred for reaction. The extracted product was dried with magnesiumsulfate and filtered, then the filtered product was concentrated under reduced pressure, and the concentrated product was purified by silica gelcolumn chromatography to obtain intermediate 2;
[0068] Step 3, the preparation of intermediate 3
[0069] Add intermediate 2, compoun...
preparation example 1
[0079] [Preparation Example 1] Preparation of Compound 1
[0082] 2,3-Dibromoanthracene (15.0g 44.64mmol), phenylboronic acid (13.6g 111.6mmol), potassiumcarbonate (30.8g 223.2mmol) were added to 500mL of toluene / ethanol / water (volume ratio 3:1:1) in a mixed solvent. Replace the air with nitrogen three times, add tetrakis(triphenylphosphine)palladium (2.58g 0.22mmol), replace the air with nitrogen three times again, and heat to 90°C under the protection of nitrogen. TLC monitoring. After the reaction was completed, it was cooled to room temperature under the protection of nitrogen. Use a separatory funnel to separate the liquid and keep the organic phase. The catalyst was removed using celite and the celite was washed with DCM until free of product. Concentrate the filtrate to a small amount, mix the sample with silica gel, and separate using a silica gel funnel to obtain intermediate A-1 (12.8 g, yield = 87%).
[0083] P...
preparation example 2
[0093] [Preparation Example 2] Preparation of Compound 18
[0094] According to the method of preparation example 1, the replace with Will replace with Will replace with Compound 18 was prepared, and its mass spectral value was 955.40.
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Abstract
The invention relates to the technical field of luminescent materials and specifically relates to an organic luminescent material, a preparation method thereof and an organic electroluminescence device containing the organic luminescent material. The invention provides the organic luminescent material with a novel structure, in order to solve the problems of routine techniques. The organic electroluminescence device with excellent luminous efficiency and obviously improved service life can be realized. Compared with a conventional host material, the organic luminescent material provided by theinvention has the advantages of capability of showing excellent electroluminescence property, long service life of device and suitable chromaticity coordinate. The organic electroluminescence devicewith high efficiency and long service life provided by the invention takes the organic luminescent material disclosed by the invention as an electroluminescence material. The preparation method of theorganic luminescent material provided by the invention is simple and feasible in synthesis process and is capable of acquiring high-yield target products by controlling reaction temperature and time.
Description
technical field [0001] The invention relates to the technical field of luminescent materials, in particular to an organic luminescent material, a preparation method thereof and an organic electroluminescent device containing the material. Background technique [0002] Organic electroluminescent devices have the characteristics of wide viewing angle, short response time, and low driving voltage, and can realize full-color OLED displays through three organic electroluminescent materials (for red, green, and blue). It is important to develop electroluminescent materials with high efficiency and long lifetime to improve the overall characteristics of organic electroluminescent (EL) devices. Recently, the development of high-efficiency and long-life organic EL devices has become an urgent subject. The required properties for the host material are high purity, glass transition temperature and thermal decomposition temperature should be high enough to ensure thermal stability. In...
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