Organic electroluminescent material and organic luminescent device
A technology of electroluminescent materials and organic light-emitting devices, which is applied in the direction of electric solid-state devices, electrical components, semiconductor devices, etc., and can solve problems such as energy quenching, luminous efficiency roll-off, and unsatisfactory
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Embodiment 1
[0031] Embodiment 1: the preparation of compound 1
[0032]
[0033] Step1, dissolve 100 mmol aniline in the solvent acetonitrile, under the protection of argon, add 1 equivalent of trifluoroacetic acid, add 5 equivalents of styrene and 5 equivalents of formaldehyde solution under stirring. After stirring, a yellow solid was produced, heated to reflux to redissolve the yellow solid, reacted for 30 minutes, cooled to room temperature, filtered, washed the filter cake with acetonitrile, and the product was subjected to column chromatography to obtain 41 mmol of compound 1 as the final product.
Embodiment 2
[0034] Embodiment 2: the synthesis of compound 2
[0035]
[0036] Step1, dissolve 100 mmol aniline in the solvent acetonitrile, under the protection of argon, add 1 equivalent of trifluoroacetic acid, add 5 equivalents of p-bromostyrene and 5 equivalents of formaldehyde solution under stirring. After stirring, a yellow solid was produced, heated to reflux to redissolve the yellow solid, reacted for 30 minutes, cooled to room temperature, filtered, washed the filter cake with acetonitrile, and the product was subjected to column chromatography to obtain 41 mmol of compound 2-1 as the final product.
[0037] Step2, take 41mmol of compound 2-1, add 41mmol of phenylboronic acid, 120mmol of sodium carbonate, 0.4mmol of tetrakistriphenylphosphopalladium, toluene, ethanol, water mixed solution. Argon was replaced three times, and the reaction was carried out at reflux temperature for 10 h. The crude product was subjected to column chromatography to obtain 33 mmol of compound 2-2....
Embodiment 3
[0039] Embodiment 3: the synthesis of compound 3
[0040]
[0041] Step1, dissolve 100 mmol aniline in the solvent acetonitrile, under the protection of argon, add 1 equivalent of trifluoroacetic acid, add 5 equivalents of m-bromostyrene and 5 equivalents of formaldehyde solution under stirring. After stirring, a yellow solid was produced, heated to reflux to redissolve the yellow solid, reacted for 30 minutes, cooled to room temperature, filtered, washed the filter cake with acetonitrile, and the product was subjected to column chromatography to obtain 41 mmol of compound 3-1 as the final product.
[0042] Step2, take 41mmol of compound 3-1, add 82mmol of phenylboronic acid, 120mmol of sodium carbonate, 0.4mmol of tetrakistriphenylphosphopalladium, toluene, ethanol, water mixed solution. The argon gas was replaced three times, and the reaction was carried out at reflux temperature for 10 h. The crude product was subjected to column chromatography to obtain 33 mmol of compo...
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