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Organic Compounds and Their Applications, Organic Light Emitting Diode Electroluminescent Devices

A technology for electroluminescent devices and organic compounds, which is applied in the fields of silicon organic compounds, organic chemistry, electric solid devices, etc., can solve the problems of increasing the driving voltage of OLED devices, and achieve long service life, high hole transport rate, and high external quantum. The effect of efficiency

Active Publication Date: 2022-02-01
WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There has always been a contradictory relationship between its energy level and hole mobility. Specifically, the highest occupied molecular orbital (Highest Occupied Molecular Orbital, HOMO) energy level of a hole transport material with high hole mobility does not match the material on both sides. The level mismatch will lead to an increase in the driving voltage of the OLED device

Method used

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  • Organic Compounds and Their Applications, Organic Light Emitting Diode Electroluminescent Devices
  • Organic Compounds and Their Applications, Organic Light Emitting Diode Electroluminescent Devices
  • Organic Compounds and Their Applications, Organic Light Emitting Diode Electroluminescent Devices

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The synthetic route of the organic compound 1 is as follows:

[0028]

[0029] The organic compound 1 synthesis steps are as follows:

[0030] (1) Add raw material 1 (3.42 g, 5 mmol), carbazole (1.00 g, 6 mmol), palladium (45 mg, 0.2 mmol) and tri-tert-butylphosphine tetrafluororate (0.17 g). 0.6 mmol), then Naot-Bu (0.58 g, 6 mmol) was added to the glove box, and 100 mL of the oxygen-removal oxygen was added to the lid of the oxygen in the branch, and at 120 ° C for 24 hours.

[0031] (2) The reaction liquid is cooled to room temperature, pour the reaction solution into 200 ml of ice water, extract three times, combined with dichloromethane, combined with organic phase, cephally silica gel, column chromatography (dichloromethane: n-hexane, v: V, 1) : 5) Separate purification, with a white powder 2.3 g, and the yield is 60%.

Embodiment 2

[0033] The synthetic route of the organic compound 2 is as follows:

[0034]

[0035] The synthesis step of the organic compound 2 is as follows:

[0036] (1) Add raw materials 1 (3.42 g, 5 mmol), diphenylamine (1.01 g, 6 mmol), palladium acetate (45 mg, 0.2 mmol) and tri-tert-butylphosphine tetrafluororate (0.17 g). 0.6 mmol), then Naot-Bu (0.58 g, 6 mmol) was added to the glove box, and 100 mL was added to the argon atmosphere to remove hydraulic toluene in advance, reacted at 120 ° C for 24 hours.

[0037] (2) The reaction liquid was cooled to room temperature, poured into 200 ml of ice water, and dichloromethane was extracted three times, combined with organic phases, camped into silica gel, column chromatography (dichloromethane: n-hexane, V: V, 1: 5) Separate purification, with a white powder 2.5 g, and the yield is 65%.

Embodiment 3

[0039] The synthetic route of the organic compound 3 is as follows:

[0040]

[0041] The synthesis step of the organic compound 3 is as follows:

[0042] (1) Add raw material 1 (3.42 g, 5 mmol), 9,9'-dimethyl acridine (1.26 g, 6 mmol), palladium acetate (45 mg, 0.2 mmol) and tri-butylphosphine Tetrafluoroborate (0.17 g, 0.6 mmol), then Naot-bu (0.58 g, 6 mmol) was added to the glove box, and 100 mL of the pre-water removal of oxygen toluene was reacted at 120 ° C under the carbon atmosphere. Hour.

[0043] (2) The reaction liquid is cooled to room temperature, pour the reaction liquid into 200 ml of ice water, extracted three times with dichloromethane, combined with organic phase, cepnthromic silica gel, column chromatography (dichloromethane: n-hexane, V: V, 1) : 5) Separate purification, with a white powder 2.6 g, yield of 64%.

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Abstract

The present application provides an organic compound and its application, and an electroluminescent device of an organic light emitting diode. Compared with traditional hole transport materials, the organic compound has a suitable HOMO energy level and a high hole transport rate. When the organic compound is used in the hole transport layer of the organic light emitting diode electroluminescent device, the organic light emitting diode electroluminescent device has higher maximum current efficiency, higher maximum external quantum efficiency and longer service life.

Description

Technical field [0001] The present application relates to the field of organic electroluminescent technology, and more particularly to an organic compound and its application, an organic light emitting diode electroluminescent device. Background technique [0002] Organic Light-Emitting Diodes, OLEDS, with its active luminescence, high luminous efficiency, high visible angle, fast response speed, high temperature adaptation, relatively simple production and processing process, low drive voltage The advantages of small energy consumption, lighter and thin, and flexible display have great application prospects to attract many researchers. [0003] For the top-emitting OLED devices currently used, the hole transport material is the thickest layer. The level of energy and hole mobility have always had contradictory relationships, and the maximum occupancy of the hole transporting material high by the hole mobility does not match the material of the molecular orbit in the HOGHEST OCCU...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F7/08H01L51/50H01L51/54
CPCC07F7/0816H10K85/631H10K85/40H10K85/6572H10K50/15
Inventor 罗佳佳
Owner WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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