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Organic compound and application thereof in organic electroluminescent device

An organic compound and alkyl technology, which is applied in the field of organic electroluminescent devices, can solve the problems of high driving voltage and low current efficiency, and achieve the effects of reducing driving voltage, increasing steric hindrance, and reducing injection barriers

Pending Publication Date: 2022-04-12
江苏绿人半导体有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the above-mentioned defects of high driving voltage and low current efficiency, and provide a new type of organic compound and its application in organic light-emitting devices

Method used

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  • Organic compound and application thereof in organic electroluminescent device
  • Organic compound and application thereof in organic electroluminescent device
  • Organic compound and application thereof in organic electroluminescent device

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0105] Preparation Example 1: Synthesis of Compound 7

[0106]

[0107] Synthesis of Intermediate 7-1: In a 1L three-necked flask, add Intermediate M1 (15g, 68.2mmol), 3-(9H-carbazol-9-yl)phenylboronic acid (21.5g, 75mmol), 200ml isopropyl Alcohol, 10ml of water, anhydrous potassium carbonate (23.5g, 0.17mol) and bis(triphenylphosphine)palladium dichloride (0.5g, 0.7mmol), under the protection of nitrogen, heated and stirred, heated to reflux for 5h, Reduce the reaction to room temperature for liquid separation, take the organic phase and add saturated sodium chloride to wash until neutral, pass the organic phase through silica gel, the eluent is toluene, rinse with 500ml toluene, and spin dry the organic phase after passing through the column A white solid was obtained (yield: 72%).

[0108] Synthesis of Intermediate 7-2: In a 1L three-necked flask, add Intermediate 7-1 (19.2g, 45mmol), pyridine (8.7g, 0.11mol) and 200ml of dichloromethane, and start stirring. Trichlorom...

preparation example 2

[0110] Preparation Example 2: Synthesis of Compound 18

[0111]

[0112] Synthesis of Intermediate 18-1: The synthesis method was the same as that of Intermediate 7-1 to obtain a white solid (yield: 75%). Synthesis of Intermediate 18-2: The synthesis method was the same as that of Intermediate 7-2 to obtain a white solid (yield: 93%). Synthesis of Compound 18: The synthesis method was the same as that of Compound 7 to obtain a white solid (yield: 80%). Mass spectrum: C34H21N3O, theoretical value: 487.17, measured value: 487.2. 1H-NMR (400MHz, CDCl3) (ppm) δ=7.10~7.14 (1H, m), 7.16~7.21 (3H, m), 7.38~7.42 (1H , m), 7.48~7.57 (4H, m), 7.60~7.69 (2H, m), 7.92~7.95 (1H, d), 8.09~8.11 (1H, s), 8.17~8.21 (2H, m), 8.31 ~8.35 (2H, m), 8.47~8.51 (1H, d), 8.53~8.57 (1H, m), 8.59~8.61 (1H, m), 8.85~8.85 (1H, s).

preparation example 3

[0114]

[0115]Synthesis of Intermediate 26-1: The synthesis method was the same as that of Intermediate 7-2 to obtain a white solid (yield: 95%). Synthesis of Compound 26: The synthesis method was the same as that of Compound 7 to obtain a white solid (yield: 76%). Mass spectrum: C34H21N3O, theoretical value: 487.17, measured value: 487.1. 1H-NMR (400MHz, CDCl3) (ppm) δ=7.17~7.21 (2H, m), 7.38~7.42 (1H, m), 7.48~7.52 (2H , m), 7.59~7.78 (6H, m), 7.83~7.89 (3H, m), 8.16~8.21 (1H, m), 8.30~8.31 (1H, d), 8.77~8.51 (1H, d), 8.67 ~8.76 (3H, m), 9.51 ~ 9.52 (1H, s).

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Abstract

The invention discloses an organic compound as shown in a formula I and an organic electroluminescent device thereof. In the formula I, R1 and R2 are nitrogen-containing tricyclic groups, nitrogen-containing tetracyclic groups, nitrogen-containing pentacyclic groups or amino groups. The organic compound provided by the invention has the advantages of low driving voltage and high current efficiency when applied to the organic electroluminescent device.

Description

technical field [0001] The invention belongs to the technical field of organic electroluminescence, and specifically relates to an organic compound and its application in organic electroluminescent compounds, and an organic electroluminescent device containing the organic compound. Background technique [0002] Today is an era of rapid development of information technology. As a new generation of display technology, OLED has gradually entered people's field of vision. The wide application prospects and rapid technological advancement make OLED one of the most popular researches in the field of display and scientific research product development. Compared with liquid crystal display technology, OLED has the advantages of active light emission, wide viewing angle, fast response, high contrast, high brightness, low power consumption and flexibility. [0003] Common OLEDs generally include the structure of the cathode and anode and the organic layer between them. The materials o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D491/147C07D495/14C07D519/00C09K11/06H01L51/50H01L51/54
Inventor 吕瑶冯美娟
Owner 江苏绿人半导体有限公司
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