Blue-ray organic electroluminescent material, as well as preparation method and organic electroluminescent device thereof
An electroluminescence and electromechanical technology, applied in the fields of luminescent materials, electro-solid devices, organic chemistry, etc., can solve the problems of low carrier transport performance, low glass transition temperature, complicated preparation, etc. The effect of good stability and cheap and easy-to-obtain raw materials
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Embodiment 1
[0035] Example 1: The blue-light organic electroluminescent material of this example, that is, 2,2'-(4,4'-(2-tert-butylanthracene-9,10-diyl)bis(4,1-phenylene )) two (1-phenyl-1H-phenanthrene [9,10-d] imidazole), the preparation steps are as follows:
[0036]
[0037] Under argon protection, 9,10-dibromo-2-tert-butylanthracene (78 mg, 0.2 mmol), 2-(4-pinacol borate phenyl)-1-phenyl-1H-phenanthrene Add [9,10-d]imidazole (198mg, 0.4mmol) into a flask containing 10ml of toluene solvent, and after fully dissolving, add potassium carbonate (2mL, 2mol / L) solution into the flask, vacuumize and deoxygenate and fill with Infuse argon, then add bistriphenylphosphinepalladium dichloride (5.6mg, 0.008mmol); heat the flask to 120°C for Suzuki coupling reaction for 24h. The reaction was stopped and cooled to room temperature, the reaction solution was extracted with dichloromethane several times and the organic phase was combined. After the organic phase was dried over anhydrous magnesiu...
Embodiment 2
[0039] Example 2: The blue-light organic electroluminescent material of this example has a structure of 2,2'-(4,4'-(2-tert-butylanthracene-9,10-diyl)bis(4,1- phenylene)) two (1-phenyl-1H-phenanthrene [9,10-d] imidazole), the preparation steps are as follows:
[0040]
[0041]Under the protection of mixed gas of nitrogen and argon, 9,10-dibromo-2-tert-butylanthracene (118 mg, 0.3 mmol), 2-(4-pinacol borate phenyl)-1-phenyl- Add 1H-phenanthrene[9,10-d]imidazole (327mg, 0.66mmol) and 15mL tetrahydrofuran into a 50mL two-neck flask, fully dissolve, and then pass in a mixture of nitrogen and argon to exhaust the air for about 20min, then place the four Triphenylphosphine palladium (4mg, 0.003mmol) was added to it, and after fully dissolved, sodium bicarbonate (3mL, 2mol / L) solution was added. Then, the mixed gas of nitrogen and argon was exhausted for about 10 minutes, and the two-neck flask was added to 70°C for Suzuki coupling reaction for 48 hours. The reaction was stopped ...
Embodiment 3
[0042] Example 3: The blue-light organic electroluminescent material of this example has a structure of 2,2'-(4,4'-(2-tert-butylanthracene-9,10-diyl)bis(4,1- phenylene)) two (1-phenyl-1H-phenanthrene [9,10-d] imidazole), the preparation steps are as follows:
[0043]
[0044] Under nitrogen protection, 9,10-dibromo-2-tert-butylanthracene (118 mg, 0.3 mmol), 2-(4-pinacol borate phenyl)-1-phenyl-1H-phenanthrene[ 9,10-d] imidazole (342mg, 0.69mmol), palladium acetate (3.5mg, 0.015mmol) and tris (o-methylphenyl) phosphine (21mg, 0.06mmol) were added to 12mL of N,N-di In the methylformamide flask, add potassium carbonate (3mL, 2mol / L) solution after fully dissolving, then blow nitrogen into the flask and exhaust the air for about 30min; heat the flask to 130°C for Suzuki coupling reaction for 12h. The reaction was stopped and cooled to room temperature, the reaction solution was extracted with dichloromethane several times and the organic phase was combined. After the organic p...
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