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Organic compound, OLED device containing same and application of organic compound

An organic compound, selected technology, applied in the field of organic compounds and OLED devices, can solve the problems of limiting the development of OLED display technology, short life of the main material, high driving voltage, etc., and achieve the goal of improving luminous efficiency, good photoelectric performance, and reducing driving voltage Effect

Pending Publication Date: 2022-04-26
WUHAN TIANMA MICRO ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] With the continuous development of display technology, people have put forward higher requirements for the photoelectric performance of OLED devices. However, the main materials currently used still have the problems of short life, low effect, and high driving voltage (turn-on voltage). , thus limiting the further development of OLED display technology

Method used

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  • Organic compound, OLED device containing same and application of organic compound
  • Organic compound, OLED device containing same and application of organic compound
  • Organic compound, OLED device containing same and application of organic compound

Examples

Experimental program
Comparison scheme
Effect test

Synthetic example

[0108] The raw material P1-1 that is used to prepare described organic compound is synthesized, concrete steps are as follows:

[0109] (1) Synthesis of A2:

[0110]Under nitrogen flow, put 0.2mol of reactant A1 and 400mL of tetrahydrofuran (THF) into a round bottom flask, slowly add 64mL of 1.6M n-butyllithium (n-BuLi) at -65°C, and then stir for 12h; the reaction is complete After neutralization with 100 mL of 1M HCl, the solvent was removed and extracted with ether. with anhydrous MgSO 4 Moisture was removed from the organic layer, the solvent was evaporated to dryness and recrystallized from ethanol to obtain A2.

[0111] (2) Synthesis of A3:

[0112] In nitrogen flow, put 10mmol of reactant A2 and 100mL THF into a round bottom flask, slowly add 1.6M n-BuLi 13mL at -78°C, then stir for 1.5h; Based tin chloride, warmed to room temperature and stirred for 12h; after the reaction was complete, the solvent was removed, the obtained solid was dissolved in hexane, and fi...

Embodiment 1

[0121] A kind of organic compound P1, the structure is The preparation method of this organic compound P1 is as follows:

[0122] (1)

[0123] Under nitrogen atmosphere, add reaction solvent with the ratio of toluene:ethanol:water=7:2:1 in reaction bottle, then add K successively 2 CO 3 (20mmol) aqueous solution, reactant P1-1 (10mmol), reactant A1 (10mmol), and catalyst tetraphenylphosphine palladium Pd (PPh 3 ) 4 (0.5 mmol), heated to 80°C, and reacted overnight. After the reaction is complete, cool to room temperature, add dichloromethane / H 2 O was extracted, and the collected organic phase was washed with anhydrous Na 2 SO 4 After drying, the filtrate was collected by suction filtration, the solvent was spun off and purified by column chromatography to obtain intermediate P1-2 (yield 68%).

[0124] (2)

[0125] Under nitrogen atmosphere, add 1,4-dioxane to the reaction flask, and then add K 2 CO 3 (16mmol) aqueous solution, intermediate reactant P1-2 (8mmol...

Embodiment 2

[0129] A kind of organic compound P70, the structure is The preparation method of this organic compound P70 is as follows:

[0130]

[0131]

[0132] The only difference from Example 1 is that P1-1 in step (1) is replaced by P70-1 in equimolar amounts, and P1-2 and B1 in step (2) are replaced by P70- 2. B70; other raw materials, dosage and process parameters are the same as in Example 1, and the target product P70 is obtained.

[0133] MALDI-TOF: Calculated m / z: C 60 h 37 N 5 O, calculated: 843.30; found: 843.54.

[0134] Compound elemental analysis results (%): calculated value: C 85.39, H 4.42, N 8.30, O 1.90; test value: C85.38, H 4.43, N 8.30, O 1.90.

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Abstract

The invention provides an organic compound, an OLED device containing the organic compound and application of the organic compound, the organic compound has a structure as shown in a formula I. Through the design of a molecular structure, the organic compound has proper HOMO / LUMO energy level and good photoelectric property, and meanwhile has good thermal stability, film-forming property and proper glass-transition temperature; and formation of a stable and uniform film is facilitated, and phase separation is reduced. The organic compound is used for an OLED device, is especially suitable for being used as a phosphorescent main body material, and has relatively high carrier transmission rate and balanced carrier transmission performance, so that hole and electron transmission in the OLED device is balanced, a relatively wide carrier composite region is obtained, the luminous efficiency is improved, the driving voltage is reduced, and the working life is prolonged.

Description

technical field [0001] The invention belongs to the technical field of organic electroluminescence materials, and in particular relates to an organic compound, an OLED device containing the same and an application thereof. Background technique [0002] Compared with traditional inorganic electroluminescence materials, organic electroluminescence (OLE) materials have good photoelectric performance and flexibility, which makes organic electroluminescence (OLE) devices containing them have self-luminescence, wide viewing angle, With the advantages of fast response, high luminous efficiency, good temperature adaptability, ultra-thin, simple production process, low driving voltage, and low energy consumption, it has been widely used in industries such as flat panel display, flexible display, solid-state lighting, and automotive display. [0003] Organic electroluminescent materials can be divided into two types according to their luminescence mechanism: electrofluorescence and el...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D498/14C07D401/14C07D413/14C07D417/14C09K11/06H01L51/54
CPCC07D498/14C07D401/14C07D413/14C07D417/14C09K11/06C09K2211/1029C09K2211/1037C09K2211/1033C09K2211/1059C09K2211/1077C09K2211/1044H10K85/615H10K85/6576H10K85/6574H10K85/657H10K85/6572
Inventor 邓东阳刘营
Owner WUHAN TIANMA MICRO ELECTRONICS CO LTD