Organic electroluminescent material and preparation method and application thereof
A technology of electroluminescent materials and organic light-emitting layers, applied in organic chemistry, circuits, electrical components, etc., can solve problems affecting the service life of materials, damage to film uniformity, and low glass transition temperature, and achieve good film stability, Effect of improving carrier transport efficiency and high hole mobility
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Embodiment 1
[0058] Synthesis of (Compound 1)
[0059] The synthetic route is as follows:
[0060]
[0061] 1) Synthesis of compound 1-2
[0062] 1000 ml three-necked flask, equipped with magnetic stirring, after argon replacement, add 46.1 g (0.48 mol) of sodium tert-butoxide, 32.15 g (purity 99%, 0.3 mol) of o-toluidine, and 64.44 g of 3-bromo-9-benzene Base-9H-carbazole (purity 99%, 0.2 mol) and toluene 400ml. After replacing with argon again, 3 ml of tri-tert-butylphosphine and 0.46 g of tris(diphenylbenzylacetone)dipalladium were successively added. After the addition, stir and heat to raise the temperature to 100°C, and control the temperature at 100-110°C for 5 hours. After cooling down to 30°C, the filtrate was obtained by suction filtration through a silica gel column, and the filtrate was rotary evaporated, dissolved in dichloromethane, washed twice with 4mol / L hydrochloric acid solution, separated, dried with anhydrous sodium sulfate, suction filtered, and rotary evapora...
Embodiment 2
[0067] Synthesis of (Compound 2)
[0068] The synthetic route is as follows:
[0069]
[0070]
[0071] 1) Synthesis of Compound 2-1
[0072] 1000ml three-necked flask, equipped with magnetic stirring, after argon replacement, add 46.1g (0.48mol) of sodium tert-butoxide, 32.15g of o-toluidine (purity 99%, 0.3mol), 64.44g of 3-bromo-9-benzene Base-9H-carbazole (purity 99%, 0.2 mol) and xylene 400ml. After argon replacement again, 3 ml of tri-tert-butylphosphine and 0.46 g of tris(diphenylbenzylacetone)dipalladium were successively added. After the addition, start stirring and heat up to 110°C, and control the temperature at 110-120°C for 5 hours. After cooling down to 30°C, the filtrate was obtained by suction filtration through a silica gel column, and the filtrate was rotary evaporated, dissolved in dichloromethane, washed twice with 4mol / L hydrochloric acid solution, separated, dried with anhydrous sodium sulfate, suction filtered, and rotary evaporated From the ...
Embodiment 3
[0077] Synthesis of (Compound 3)
[0078] The synthetic route is as follows:
[0079]
[0080] 1) Synthesis of compound 3-1
[0081] 1000ml three-necked flask, equipped with magnetic stirring, after argon replacement, add 46.1g (0.48mol) of sodium tert-butoxide, 32.15g of o-toluidine (purity 99%, 0.3mol), 64.44g of 3-bromo-9-benzene Base-9H-carbazole (purity 99%, 0.2 mol) and toluene 400ml. After replacing with argon again, 3 ml of tri-tert-butylphosphine and 0.46 g of tris(diphenylbenzylacetone)dipalladium were successively added. After the addition, stir and heat to raise the temperature to 100°C, and control the temperature at 100-110°C for 5 hours. After cooling down to 30°C, the filtrate was obtained by suction filtration through a silica gel column, and the filtrate was rotary evaporated, dissolved in dichloromethane, washed twice with 4mol / L hydrochloric acid solution, separated, dried with anhydrous sodium sulfate, suction filtered, and rotary evaporated The f...
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