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Organic phosphorescent material, preparation method thereof, and electroluminescent device containing organic phosphorescent material

A technology of optical materials and organic phosphors, applied in the field of organic phosphorescent materials and their preparation, can solve the problems of low efficiency, high voltage, low brightness, etc., and achieve the effects of high current efficiency, low driving voltage, and easy operation

Pending Publication Date: 2020-04-21
JILIN OPTICAL & ELECTRONICS MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, for a long time, OLED research has been stuck at the level of low brightness, high voltage, and low efficiency.

Method used

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  • Organic phosphorescent material, preparation method thereof, and electroluminescent device containing organic phosphorescent material
  • Organic phosphorescent material, preparation method thereof, and electroluminescent device containing organic phosphorescent material
  • Organic phosphorescent material, preparation method thereof, and electroluminescent device containing organic phosphorescent material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Example 1 Preparation of Compound C-001

[0052]

[0053] Step 1: Weigh A-001 (48mmol, 10g), IrCl 3 ·3H 2 O (19.2mmol, 6.77g), ethylene glycol ether (150ml), and water (50ml) were added to the reaction system separately. 2 Heated to reflux for 24h under protection, then cooled to room temperature, precipitated out, filtered under reduced pressure, rinsed with absolute ethanol and petroleum ether, and dried to obtain bridging ligand B-001 (6.3mmol, 8.10g) ), the yield is 65.5%;

[0054] Step 2: Weigh the bridging ligand B-001 (3.9mmol, 5g), K 2 CO 3 (26mmol, 3.60g), ethylene glycol ether (50ml) were added to the reaction system, in N 2 Add 2,4-pentanedione (11.7mmol, 1.17g) under protection, raise the temperature to 120°C, heat to reflux for 24h, cool to room temperature, filter under reduced pressure, rinse the filter cake with ethanol, and wash it at -0.1Mpa , Drying at 50° C., passing through a silica gel column, and finally spin-drying the obtained filtrate to obtain the ...

Embodiment 2

[0060] Example 2 Preparation of C-004

[0061]

[0062] Step 1: Weigh A-004 (45mmol, 10g), IrCl 3 ·3H 2 O (18mmol, 6.35g), ethylene glycol ether (150ml), and water (50ml) were added to the reaction system separately. 2 Heat to reflux for 24 hours under protection, and then cool to room temperature. Precipitate precipitates. Perform vacuum filtration, rinse with absolute ethanol and petroleum ether, and dry to obtain bridging ligand B-004 (5.8mmol, 7.80g ), the yield is 64.4%;

[0063] Step 2: Weigh the bridging ligand B-004 (3.7mmol, 5g), K 2 CO 3 (26mmol, 3.60g), ethylene glycol ether (50ml) were added to the reaction system, in N 2 Add 2,4-pentanedione (11.1mmol, 1.11g) under protection, raise the temperature to 120°C, heat to reflux for 24h, cool to room temperature, filter under reduced pressure, rinse the filter cake with ethanol, and wash it at -0.1Mpa , Dried at 50°C, passed through a silica gel column, and finally spin-dried the obtained filtrate to obtain the target produc...

Embodiment 3

[0069] Example 3 Preparation of C-007

[0070]

[0071] Step 1: Weigh A-007 (42mmol, 10g), IrCl 3 ·3H 2 O (16.8mmol, 5.92g), ethylene glycol ether (150ml), and water (50ml) were added to the reaction system separately. 2 Heated to reflux for 24h under protection, then cooled to room temperature, precipitated out, filtered under reduced pressure, rinsed with absolute ethanol and petroleum ether, and dried to obtain bridging ligand B-007 (5.1mmol, 7.10g ), the yield is 60.3%;

[0072] Step 2: Weigh the bridging ligand B-007 (3.6mmol, 5g), K 2 CO 3 (26mmol, 3.60g), ethylene glycol ether (50ml) were added to the reaction system, in N 2 Add 2,4-pentanedione (10.8mmol, 1.08g) under protection, raise the temperature to 120°C, heat to reflux for 24h, cool to room temperature, filter under reduced pressure, rinse the filter cake with ethanol, and wash it at -0.1Mpa , Drying at 50° C., passing through a silica gel column, and finally spin-drying the obtained filtrate to obtain the target pro...

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PUM

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Abstract

The invention discloses an organic phosphorescent material, a preparation method thereof, and an electroluminescent device containing the organic phosphorescent material. The organic phosphorescent material is a material containing a metal iridium complex, and the structural general formula of the organic phosphorescent material is shown in the specification. The organic phosphorescent material has high luminous efficiency and high strength, and can be applied to the organic electroluminescent device as a luminous host material, so that the driving voltage of the electroluminescent device is obviously reduced, the current efficiency of the device can be obviously improved, and the phosphorescence service life of the device can be obviously prolonged. In addition, the preparation method ofthe organic phosphorescent material is simple and convenient to operate, low in cost and suitable for market promotion and application.

Description

Technical field [0001] The invention relates to the technical field of organic photoelectric materials, in particular to an organic phosphorescent material and a preparation method and application thereof. Background technique [0002] Organic electroluminescence, or organic light-emitting diodes (Organic Light-emitting Diodes, OLEDs) research has emerged since the 1960s, but the real vigorous development began in the late 1980s. In 1963, the Pope research team used anthracene single crystals and applied a DC voltage (400V) to obtain weak blue light, but the low brightness and efficiency did not attract enough attention. After that, single crystal molecules such as naphthalene and perylene are used as the light-emitting layer under a voltage of 100-800V, and an electroluminescent device with a quantum efficiency of up to 5% is obtained. However, the high driving voltage makes semiconductor devices made of single crystal molecules without any application value. Therefore, the re...

Claims

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Application Information

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IPC IPC(8): C07F15/00C09K11/06H01L51/50H01L51/54
CPCC07F15/0033C09K11/06C09K2211/185C09K2211/1033H10K85/342
Inventor 王辉高旭姜志远李明陈明尹维龙马晓宇
Owner JILIN OPTICAL & ELECTRONICS MATERIALS
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