Quinolone derivatives and application thereof in organic light-emitting devices (OLEDs)
An organic light-emitting layer and luminescent technology, applied in the field of preparation of organic electroluminescent devices, quinolone derivatives and their preparation, can solve the problem of low fluorescence quantum efficiency
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Embodiment 1
[0071] Embodiment 1,1-methyl-3, the preparation of 4-diphenylquinolin-2 (1H)-ketone (Q1)
[0072]
[0073] The first step: take 1-methyl-4-phenylquinolin-2(1H)-one with a molar ratio of 1:1, and N-bromosuccinimide as raw materials, and dissolve the above-mentioned raw materials in N, N-dimethylformamide was reacted with stirring at room temperature for 10 hours, and a large amount of solid was precipitated by adding water, which was washed and dried to obtain the corresponding bromide with a yield of 80%.
[0074] The second step: under the protection of nitrogen, the bromide obtained in the first step and phenylboronic acid (molar ratio is 1: 1) are dropped into two-necked flasks, and a catalytic amount of tetrakis (triphenyl) phosphine palladium) and mixed solvent ( Sodium carbonate solution (2mol / L):toluene:ethanol=1:4:4), keep the temperature at 90-100°C, stir for 24 hours, extract with ether, and the product is subjected to column chromatography (eluent is petroleum et...
Embodiment 2
[0085] Embodiment 2, the preparation of 1-methyl-3-(2-naphthyl)-4-phenylquinolin-2(1H)-one (Q2)
[0086]
[0087] The first step: take 1-ethyl-4-phenylquinolin-2(1H)-one with a molar ratio of 1:1, and N-bromosuccinimide as raw materials, dissolve the above raw materials in N, N-dimethylformamide was stirred at room temperature for 10 hours, and a large amount of solid was precipitated by adding water. The solid was washed and dried to obtain the corresponding bromide with a yield of 80%.
[0088] The second step: under the protection of nitrogen, put the product obtained in the first step and 2-naphthylboronic acid (the molar ratio is 1:1) into a two-neck flask, add a catalytic amount of tetrakis (triphenyl) phosphine palladium) and a mixed solvent (sodium carbonate solution (2mol / L):toluene:ethanol=1:4:4), keep the temperature at 90-100°C, stir for 24 hours, extract with ether, and the product is subjected to column chromatography (eluent is petroleum ether / ethyl acetate ...
Embodiment 3
[0098] Embodiment 3, the preparation of 1-methyl-3-(4-(9-carbazolyl)phenyl)-4-phenylquinolin-2(1H)-one (Q3)
[0099]
[0100] The first step: take 1-methyl-4-phenylquinolin-2(1H)-one with a molar ratio of 1:1, and N-bromosuccinimide as raw materials, and dissolve the above-mentioned raw materials in N, N-dimethylformamide was stirred at room temperature for 10 hours, and a large amount of solid was precipitated by adding water. The solid was washed and dried to obtain the corresponding bromide with a yield of 80%.
[0101] The second step: under the protection of nitrogen, put the product obtained in the first step and 4-(9-carbazolyl)phenylboronic acid (1:1 in molar ratio) into a two-necked bottle, and add a catalytic amount of tetrakis(triphenyl) ) phosphine palladium) and mixed solvent (sodium carbonate solution: toluene: ethanol = 1: 4: 4), keep the temperature at 90-100 ° C, stir for 24 hours, extract with ether, and the product is subjected to column chromatography (e...
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