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Organic compound, application thereof and organic light-emitting diode electroluminescent device

An electroluminescent device and organic compound technology, 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 external quantum efficiency, and high current efficiency. Effect

Active Publication Date: 2019-11-22
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 compound, application thereof and organic light-emitting diode electroluminescent device
  • Organic compound, application thereof and organic light-emitting diode electroluminescent device
  • Organic compound, application thereof and organic light-emitting diode electroluminescent device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

[0028]

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

[0030] (1) Add raw material 1 (3.42g, 5mmol), carbazole (1.00g, 6mmol), palladium acetate (45mg, 0.2mmol) and tri-tert-butylphosphine tetrafluoroborate (0.17g) into a 250mL two-necked flask , 0.6mmol), and then NaOt-Bu (0.58g, 6mmol) was added into the glove box, and 100mL of toluene, which had been dehydrated and deoxygenated beforehand, was poured into the two-neck flask under an argon atmosphere, and reacted at 120°C for 24 hours.

[0031] (2) After the reaction solution is cooled to room temperature, the reaction solution is poured into 200 mL of ice water, extracted three times with dichloromethane, the combined organic phases are spun into silica gel, and column chromatography (dichloromethane:n-hexane, v:v, 1 :5) separation and purification to obtain 2.3g of white powder, yield 60%.

Embodiment 2

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

[0034]

[0035] The synthetic steps of organic compound 2 are as follows:

[0036] (1) Add raw material 1 (3.42g, 5mmol), diphenylamine (1.01g, 6mmol), palladium acetate (45mg, 0.2mmol) and tri-tert-butylphosphine tetrafluoroborate (0.17g , 0.6mmol), and then NaOt-Bu (0.58g, 6mmol) was added into the glove box, and 100mL of toluene, which had been dehydrated and deoxygenated beforehand, was injected under an argon atmosphere, and reacted at 120°C for 24 hours.

[0037] (2) After the reaction solution is cooled to room temperature, the reaction solution is poured into 200 mL of ice water, extracted three times with dichloromethane, the combined organic phases are spun into silica gel, and column chromatography (dichloromethane:n-hexane, v:v, 1: 5) Separation and purification to obtain 2.5 g of white powder with a yield of 65%.

Embodiment 3

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

[0040]

[0041] The synthetic steps of organic compound 3 are as follows:

[0042] (1) Add raw material 1 (3.42g, 5mmol), 9,9'-dimethylacridine (1.26g, 6mmol), palladium acetate (45mg, 0.2mmol) and tri-tert-butylphosphine into a 250mL two-necked flask Tetrafluoroborate (0.17g, 0.6mmol), then NaOt-Bu (0.58g, 6mmol) was added into the glove box, and 100mL of toluene, which had been dehydrated and deoxygenated beforehand, was injected under an argon atmosphere, and reacted at 120°C for 24 Hour.

[0043] (2) After the reaction solution is cooled to room temperature, the reaction solution is poured into 200 mL of ice water, extracted three times with dichloromethane, the combined organic phases are spun into silica gel, and column chromatography (dichloromethane:n-hexane, v:v, 1 :5) separation and purification to obtain 2.6g of white powder, yield 64%.

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Abstract

The present application provides an organic compound and an application thereof, and an organic light emitting diode electroluminescent device. The organic compound has a suitable HOMO energy level and a high hole transport rate compared with a conventional hole transport material. When the organic compound is applied to a hole transport layer of the organic light-emitting diode electroluminescentdevice, the organic light-emitting diode electroluminescent device has the higher highest 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, in particular to an organic compound and its application, and an organic light emitting diode electroluminescent device. Background technique [0002] Organic light-emitting diodes (organic light-emitting diodes, OLEDs) do not need a backlight source for their active light emission, high luminous efficiency, large viewing angle, fast response speed, wide temperature range, relatively simple production and processing technology, and low driving voltage. , low energy consumption, lighter and thinner, and flexible display, it has great application prospects and has attracted the attention of many researchers. [0003] For currently used top-emitting OLED devices, the hole transport material acts as the thickest layer. There has always been a contradictory relationship between its energy level and hole mobility. Specifically, the highest occupied molecular orbital (High...

Claims

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Application Information

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Patent Type & Authority Applications(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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