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Organic compound and organic electroluminescent element comprising same

A compound and bonding technology, which is applied in the field of organic electroluminescent elements, can solve the problems of color purity and efficiency reduction of organic electric elements, charge imbalance of light-emitting layer, low HOMO value, etc., and achieve improved luminous efficiency and life characteristics, long-term Excellent life characteristics and low driving voltage

Pending Publication Date: 2022-03-04
MATERIAL SCIENCES CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] 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
[0012] 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
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Effect test

Synthetic example 1-1

[0212]

[0213] 1-A) Synthesis of Intermediate 1-A

[0214]

[0215] 1-(4'-Bromo-[1,1'-biphenyl]-4-yl)adamantane (1-(4'-bromo-[1,1'-biphenyl ]-4-yl)adamantane, 100.0g, 272.2mmol), [1,1'-biphenyl]-4-amine ([1,1'-biphenyl]-4-amine, 50.68g, 299.5mmol), Pd 2 (dba) 3 (4.99g, 5.44mmol), t-BuONa (52.33g, 544.5mmol), 50% t-Bu 3 P solution (5.12mL, 21.78mmol) and toluene (1500mL) were stirred at 100°C to react. After the reaction was completed, methanol was added to precipitate, and the resulting solid was filtered, and then purified by silicagel column chromatography and recrystallization to prepare 100.5 g of compound 1-A (yield: 81%).

[0216] 1-B) Synthesis of compound 337

[0217]

[0218] Under nitrogen stream, add compound 1-A (10g, 21.95mmol), 3-bromodibenzofuran (3-bromodibenzofuran) (5.97g, 24.14mmol), Pd 2 (dba) 3 (0.40g, 0.44mmol), t-BuONa (4.22g, 43.89mmol), 50% t-Bu 3 P solution (0.41mL, 1.76mmol) and toluene (150mL) were stirred at 100°C to react. After t...

Synthetic example 1-2

[0219]

[0220]

[0221] Except that 2-bromodibenzofuran (2-bromodibenzofuran) (5.97g, 24.14mmol) was used instead of 3-bromodibenzofuran, the same method as that of compound 337 was used to synthesize and purify, and 8.46 g of compound 340 (yield: 62%).

Synthetic example 1-3

[0222]

[0223]

[0224] Except that 3-bromodibenzothiophene (3-bromodibenzothiophene, 6.35g, 24.14mmol) was used instead of 3-bromodibenzofuran, the synthesis and purification were carried out in the same way as that of compound 337, and 9.24g Compound 974 (yield: 66%).

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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 having a low driving voltage and significantly improved luminous efficiency and lifespan.

Description

technical field [0001] The invention relates to an organic compound and an organic electroluminescent element comprising the organic compound. Background technique [0002] Compared with other flat-panel display elements such as the existing liquid crystal display (LCD), plasma display panel (PDP) and field emission display (FED), the organic electroluminescent element (OLED) has a simple structure and has various advantages in the manufacturing 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 for backlighting, lighting, Light source for billboards, etc. [0003] As far as the organic electroluminescent element is concerned, the first 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), the principle of light emission is usually based...

Claims

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Application Information

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IPC IPC(8): C07D307/91C07D409/12C07D405/12C07D333/76C07C211/61C07C209/10C07D311/96C07D209/86C07D209/88C09K11/06H01L51/54
CPCC07D307/91C07D409/12C07D405/12C07D333/76C07C211/61C07C209/10C07D311/96C07D209/86C07D209/88C09K11/06C09K2211/1011C09K2211/1014C09K2211/1022C09K2211/1029C09K2211/1088C09K2211/1092H10K85/625H10K85/624H10K85/615H10K85/631H10K85/636H10K85/626H10K85/633H10K85/6576H10K85/6574H10K85/6572
Inventor 李泰烷俞智雄都光石郭兑虎金相大
Owner MATERIAL SCIENCES CORPORATION
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