Hole transport compound, preparation method thereof and light-emitting device
A technology of hole transport and hole transport layer, applied in the field of hole transport compounds and preparation methods thereof and light-emitting devices, can solve the problems of reducing the luminous efficiency of the light-emitting layer, etc., to improve the triplet energy level and prevent exciton quenching. , to avoid the effect of triplet energy level reduction
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Embodiment 1
[0064] Such as figure 2 The reaction process diagram of compound A1 in the hole transport compound shown, the preparation method of compound A1: First, add 2mmol 2,6,14-tribromotriptycene, 18mmol of the first raw material M1, 80mmolCsCO 3 150ml of DMF solvent was added to the two-necked flask under a nitrogen atmosphere, and stirred at room temperature for 30 minutes to fully dissolve the solid in the two-necked flask; then, the two-necked flask was heated and refluxed at 155°C for 12 hours. At room temperature, the product solution was obtained; finally, the product solution was poured into water, extracted 3 times with dichloromethane, passed through anhydrous MgSO 4 Dry, filter, and remove the solvent by rotary evaporation, use n-hexane / dichloromethane as eluent, separate and purify by silica gel chromatography, and remove the solvent by rotary evaporation to obtain the product. After vacuum drying for 12 hours, compound A1 is obtained, and its product The rate is 43%. ...
Embodiment 2
[0067] Such as image 3 The schematic diagram of the preparation of compound A8 among the hole transport compounds shown, the preparation method of compound A8: first, add 2mmol 1,3,5,7-tetrakis(4-iodophenyl) adamantane successively in a 250mL two-necked bottle , 18mmol first raw material M4, 80mmol CsCO 3 150ml of DMF solvent was added to the two-necked flask under a nitrogen atmosphere, and stirred at room temperature for 30 minutes to fully dissolve the solids in the two-necked flask; then, the two-necked flask was heated and refluxed at 155°C for 12 hours. After the reaction was completed, the two-necked flask was cooled to At room temperature, the product solution was obtained; finally, the product solution was poured into water, extracted 3 times with dichloromethane, passed through anhydrous MgSO 4 Dry, filter, and remove the solvent by rotary evaporation, use n-hexane / dichloromethane as the eluent, separate and purify by silica gel chromatography, and remove the solve...
Embodiment 3
[0070] see image 3 , the embodiment of the present invention provides a light-emitting device 100, including an anode 20, a hole injection layer 30, a hole transport layer 40, a light-emitting layer 50, an electron transport layer 60, an electron injection layer 70, and a cathode 80 stacked in sequence, and the anode 20 is disposed on the glass substrate 10 on the surface facing away from the hole injection layer 30 , wherein the hole transport layer 40 includes the compound A1 of the above-mentioned embodiment 1.
[0071] A method for preparing a light emitting device 100, comprising the steps of:
[0072] Step 1, clean the ITO substrate in the following order: 5% tetramethylammonium hydroxide solution ultrasonic 15min, pure water ultrasonic 15min, isopropanol ultrasonic 15min, oven drying 1h; wherein, the ITO substrate includes glass substrate and deposited on glass anode on the substrate;
[0073] Step 2, transfer the ITO substrate to the UV-OZONE equipment for surface t...
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