Blue light organic electroluminescent material, preparation method and applications thereof
A luminescent and electromechanical technology, applied in luminescent materials, organic chemistry, chemical instruments and methods, etc., to achieve the effects of easy availability of raw materials, good thermal stability, high decomposition temperature and glass transition temperature
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Embodiment 1
[0031] Example 1: The blue-light organic electroluminescent material of this example, that is, 3,7-bis(10-(5-phenylbiphenyl)anthracen-9-yl)thiofluorene dioxide, the preparation steps are as follows:
[0032]
[0033] Under argon protection, 3,7-dibromodioxythiofluorene (75mg, 0.2mmol), 10-(5-phenylbiphenyl) anthracene-9-pinacol borate (213mg, 0.4mmol) were added In the flask filled with 10ml of toluene solvent, after fully dissolving, potassium carbonate (2mL, 2mol / L) solution was added into the flask, vacuumized to deoxygenate and filled with argon, then added bistriphenylphosphine palladium dichloride ( 5.6mg, 0.008mmol); the flask was heated 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 magnesium sulfate and spin-dried, the crude product was obtained, and the c...
Embodiment 2
[0035] Example 2: The blue-light organic electroluminescent material of this example has a structure of 3,7-bis(10-(5-phenylbiphenyl)anthracen-9-yl)thiofluorene dioxide, and the preparation steps are as follows:
[0036]
[0037] Under the protection of mixed gas of nitrogen and argon, 3,7-dibromodioxythiofluorene (112mg, 0.3mmol), 10-(5-phenylbiphenyl)anthracene-9-pinacol borate (351mg, 0.66mmol) and 15mL tetrahydrofuran were added to a 50mL two-necked bottle, fully dissolved, and then a mixture of nitrogen and argon was introduced to exhaust the air for about 20 minutes, and then tetrakistriphenylphosphine palladium (4mg, 0.003mmol) was added to it, fully After dissolving, add sodium bicarbonate (3mL, 2mol / L) solution. 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 and cooled to room temperature, the reaction solution was extracted w...
Embodiment 3
[0038] Example 3: The blue-light organic electroluminescent material of this example has a structure of 3,7-bis(10-(5-phenylbiphenyl)anthracen-9-yl)thiofluorene dioxide, and the preparation steps are as follows:
[0039]
[0040] Under nitrogen protection, 3,7-dibromodioxythiofluorene (112mg, 0.3mmol), 10-(5-phenylbiphenyl) anthracene-9-pinacol borate (383mg, 0.72mmol), acetic acid Palladium (3.5mg, 0.015mmol) and tri(o-methylphenyl)phosphine (21mg, 0.06mmol) were added into a flask filled with 12mL of N,N-dimethylformamide, and potassium carbonate ( 3mL, 2mol / L) solution, and then blow nitrogen into the flask to 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 phase was dried over anhydrous magnesium sulfate and spin-dried, the crude product was obtai...
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