Organic light-emitting device and display device
An electroluminescence device and luminescence technology, applied in the direction of electric solid-state devices, electrical components, semiconductor devices, etc., can solve the problems of high device driving voltage, low efficiency, serious dye carrier capture, etc., to avoid efficiency reduction, Improve the transmission capacity and improve the effect of dipole arrangement
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[0188] The invention also provides a preparation method of the organic electroluminescence device, which comprises sequentially depositing an anode, a hole transport region, a light-emitting layer, an electron transport region and a cathode on a substrate, and then encapsulating. Wherein, when preparing the light-emitting layer, a multi-source co-evaporation method is used. The deposition methods of the anode, the hole transport region, the electron transport region and the cathode are the same as the existing methods in the art.
[0189] The following synthesis example exemplarily provides the specific synthesis method of the fluorescent dye, wherein the analysis and detection of the compound uses an ABSCIEX mass spectrometer (4000QTRAP).
Embodiment 1
[0191] Synthesis of compound M-1:
[0192]
[0193] Preparation of Intermediate M1-1:
[0194] 2-Methyl-4-bromoaniline (46.5g, 250mmol), phenylboronic acid (30.3g, 250mmol), tetrakis(triphenylphosphine)palladium (8.66g, 7.5mmol), potassium carbonate (69g, 500mmol) were added In a 2L single-necked flask, add 1000mL of 1,4-dioxane and 250mL of water, and heat at 110°C for 20h under the protection of nitrogen.
[0195] After the system cools down, add 1000 mL of ethyl acetate to the reaction system, filter, wash the organic phase with 400 mL of concentrated hydrochloric acid, separate the liquids, use sodium hydroxide to adjust the pH to alkaline, use dichloromethane 200 mL×3 to extract, and combine The organic phase was concentrated under reduced pressure and purified by column chromatography. 38.8 g of intermediate M1-1 can be obtained.
[0196] Synthesis of Intermediate M1-2:
[0197] Add intermediate M1-1 (28.9g, 158mmol) into a 2L three-necked flask, add 4-tert-butylb...
Embodiment 2
[0203] Synthesis of Compound M-3:
[0204]
[0205] Preparation of intermediate M3-1:
[0206] 5-Bromo-2-methylaniline (46.5g, 250mmol), phenylboronic acid (30.3g, 250mmol), tetrakis(triphenylphosphine)palladium (8.66g, 7.5mmol), potassium carbonate (69g, 500mmol) were added In a 2L single-necked flask, add 1000mL 1,4-dioxane and 250mL water, and heat at 110°C for 20h under nitrogen protection.
[0207] After the system cools down, add 1000 mL of ethyl acetate to the reaction system, filter, wash the organic phase with 400 mL of concentrated hydrochloric acid, separate the liquids, use sodium hydroxide to adjust the pH to alkaline, use dichloromethane 200 mL×3 to extract, and combine The organic phase was concentrated under reduced pressure and purified by column chromatography. 35.9 g of intermediate M3-1 can be obtained.
[0208] Preparation of intermediate M3-2: the synthesis scheme was the same as that of M1-2, and 34.6 g of white solid was obtained after column chro...
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