Organic material and application thereof in organic electroluminescence devices

An organic material and luminescent technology, applied in the fields of electric solid-state devices, electrical components, organic chemistry, etc., can solve the problems of reducing the cost of OLEDs, increasing the complexity and disadvantages of the device manufacturing process, and achieving the effect of high electron mobility

Active Publication Date: 2013-11-06
KUNSHAN VISIONOX DISPLAY TECH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Devices based on this hybrid electron transport layer have improved efficiency and lifetime, but increase the complexity of the device manufacturing process, which is not conducive to reducing the cost of OLEDs

Method used

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  • Organic material and application thereof in organic electroluminescence devices
  • Organic material and application thereof in organic electroluminescence devices
  • Organic material and application thereof in organic electroluminescence devices

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The synthesis of embodiment 1 compound 2-2

[0033] (1) The first step reaction

[0034]

[0035] A 500 ml three-neck flask was equipped with a magnetic stirrer, and after argon replacement, 13.58 g of 4-bromoiodobenzene (purity 99%, 0.048 mol) and THF 200 ml were added in sequence according to the above amounts. BuLi 19ml (concentration 2.5M, 0.0475mol) was added dropwise at -83°C, and anthraquinone 4.16g (purity 99%, 0.02mol) was immediately added. After the addition, the temperature was naturally raised to room temperature, and the solution was bright yellow. Add 200ml of water for hydrolysis, collect the organic layer and wash it with dihalomethane, combine the organic layers, evaporate the solvent to dryness, add 300ml of acetic acid, 18g of KI and 18g of sodium hypophosphite, reflux, react for 1 hour, and cool down , filtered, and rinsed with water to obtain 9.29 g of a yellow product with a purity of 94.5% and a yield of 90%.

[0036] (2) The second step re...

Embodiment 2

[0040] The synthesis of embodiment 2 compound 2-4

[0041] Using 2,3-dimethyl-9,10-anthraquinone, 4-bromoiodobenzene, and benzimidazole as raw materials, compound 2-4 was obtained through the same steps as in Example 5.

[0042] Product MS (m / e): 590.71.; Elemental analysis (C 42 h 30 N 4 ): theoretical value C: 85.4%, H: 5.12%, N: 9.48%; measured value C: 85.35%, H: 5.01%, N: 9.64%.

Embodiment 3

[0043] The synthesis of embodiment 3 compound 2-5

[0044] Using 9,10-benzoanthraquinone, 4-bromoiodobenzene, and benzimidazole as raw materials, compound 2-5 was obtained through the same steps as in Example 5.

[0045] Product MS (m / e): 612.72.; Elemental analysis (C 44 h 28 N 4 ): theoretical value C: 86.25%, H: 4.61%, N: 9.14%; measured value C: 86.35%, H: 4.55%, N: 9.1%.

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Abstract

The invention relates to an organic material and an organic electroluminescence device comprising the same. The material has the structural general formula shown in the description, wherein Ar is sub-fused-ring aromatic hydrocarbons with the carbon atoms between 6 and 30, or sub-fused heterocyclic aromatic hydrocarbons with the carbon atoms between 6 and 30; R1 is phenyl, biphenyl, naphthyl, alkyl with 1 to 5 carbon atoms or hydrogen; and n is an integer from 2 to 3. The organic material can be used as an electron transport layer in the organic electroluminescence device.

Description

technical field [0001] The invention relates to a novel organic material and its application in organic electroluminescence devices, belonging to the technical field of organic electroluminescence display. Background technique [0002] The electron transport material traditionally used in electroluminescent devices is Alq 3 , but Alq 3 The electron mobility is relatively low (about 10 -6 cm 2 / Vs). With the commercialization and practical application of electroluminescent devices, people hope to obtain ETL materials with higher transmission efficiency and better performance. In this field, researchers have done a lot of exploratory work. LG Chem's world patent reports a series of naphthimidazole derivatives, which are used as electron transport and injection materials in electroluminescent devices, improving the luminous efficiency of the device (WO 2007 / 011170 A1); LG Chem's patent specification in China It is reported that a series of pyrene derivatives are used as el...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D235/06C07D235/18C07D417/14H01L51/54
Inventor 邱勇李银奎马金海
Owner KUNSHAN VISIONOX DISPLAY TECH
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