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Organic compound and organic electroluminescent element comprising same

A compound and bonding technology, which is applied in the direction of silicon organic compounds, organic chemistry, electrical components, etc., can solve the problems of color purity and efficiency reduction of organic electrical components, charge imbalance of light-emitting layer, low HOMO value, etc., to improve luminous efficiency And life characteristics, reduce hole accumulation, reduce the effect of driving voltage

Pending Publication Date: 2022-07-29
MATERIAL SCIENCES CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, most of the substances used in the hole transport layer have a low T1 value due to the need to have a low HOMO value, whereby excitons generated in the light-emitting layer are transferred to the hole Transport layer, leading to a charge imbalance within the emissive layer, which results in light emission at the interface of the hole transport layer
[0011] When the interface of the hole transport layer emits light, the color purity and efficiency of the organic electrical device will decrease, and the life will be shortened.

Method used

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  • Organic compound and organic electroluminescent element comprising same
  • Organic compound and organic electroluminescent element comprising same
  • Organic compound and organic electroluminescent element comprising same

Examples

Experimental program
Comparison scheme
Effect test

Synthetic example 1

[0158]

[0159] 1-1) Synthesis of compound 1-1

[0160]

[0161] 1-Bromoadamantane (215.1 g, 1000 mmol) was dissolved in 1,3-dichlorobenzene (220.5 g, 1500 mmol) under nitrogen flow. After that, aluminum chloride (4.0 g, 30 mmol) was added and stirred at a temperature of 60°C for 8 hours. After the reaction was completed, the organic layer was extracted with water and dichloromethane. with MgSO 4 The extracted solution was treated to remove moisture, dried and concentrated, and then purified by column chromatography. Then, the compound 1-1 of 182.8g (yield: 65%) was obtained by recrystallization from methanol.

[0162] 1-2) Synthesis of compound 1-2

[0163]

[0164] Under nitrogen flow, add N-phenyl-[1,1'-biphenyl]-4-amine, 21.0 g, 85.60 g to the round bottom flask mmol), compound 1-1 (26.48 g, 94.16 mmol), t-BuONa (16.45 g, 171.2 mmol), Pd 2 (dba) 3 (1.57 g, 1.71 mmol), Sphos (1.41 g, 3.42 mmol) and toluene (350 mL), and then stirred at 100°C to react. After ...

Synthetic example 2

[0168]

[0169]

[0170] Except using (9,9-dimethyl-9H-fluoren-2-yl)boronic acid ((9,9-dimethyl-9H-fluoren-2-yl)boronic acid, 5.83 g, 24.49 mmol) instead of [1,1 Except for '-biphenyl]-4-ylboronic acid, 7.54 g (yield: 57%) of compound 39 was prepared in the same manner as the synthesis method of compound 32.

Synthetic example 3

[0171]

[0172]

[0173] Except using (9-phenyl-9H-carbazol-3-yl)boronic acid ((9-phenyl-9H-carbazol-3-yl)boronicacid, 7.03 g, 24.49 mmol) instead of [1,1'-biphenyl] Except for -4-ylboronic acid, 7.82 g (yield: 55%) of compound 47 was prepared in the same manner as the synthesis method of compound 32 .

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Abstract

The present invention relates to a novel organic compound and an organic light-emitting element comprising the same, and more particularly, to an organic electroluminescent element which has a low driving voltage and can significantly improve luminous efficiency and lifespan.

Description

technical field [0001] The present invention relates to an organic compound and an organic electroluminescence element including the organic compound. Background technique [0002] Compared with other flat panel display elements such as existing liquid crystal displays (LCDs), plasma display panels (PDPs) and field emission displays (FEDs), organic electroluminescent elements (OLEDs) have a simple structure and various advantages in the fabrication process , has high brightness and excellent viewing angle characteristics, fast response speed, and low driving voltage, so it is actively developed and commercialized so that it can be used in flat panel displays such as wall-mounted TVs or display backlights, lighting, Light source for billboards, etc. [0003] For organic EL elements, the original organic EL element was reported by C.W. Tang et al. of Eastman Kodak Company, (C.W.Tang, S.A. Vanslyke, Applied Physics Letters, Vol. 51 913 Page, 1987), its light-emitting principl...

Claims

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Application Information

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IPC IPC(8): C07C211/54C07C211/58C07C211/61C07C255/58C07D209/86C07D209/88C07D307/91C07D333/76C07D405/12C07D405/14C07D409/12C07D409/14C07F7/08H01L51/54H01L51/50
CPCC07C211/54C07C211/58C07D209/86C07D307/91C07D333/76C07D405/12C07D409/12C07C211/61C07C255/58C07F7/0812C07D209/88C07D405/14C07D409/14C07C2603/74C07C2603/18H10K85/636H10K85/626H10K85/633H10K85/615H10K85/631H10K85/6576H10K85/6574H10K85/6572H10K85/40H10K50/15
Inventor 李太完都光石宋杰金钟范
Owner MATERIAL SCIENCES CORPORATION
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