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A Novel Organic Electroluminescent Compound and Organic Electroluminescent Device

An electroluminescence and compound technology, applied in organic chemistry, electro-solid devices, luminescent materials, etc., can solve the problems of backward panel manufacturing enterprises and insufficient development of organic electroluminescent materials, and achieve good thermal stability and good carrier. Migration rate, effect of low voltage

Active Publication Date: 2021-05-28
NANJING TOPTO MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] As far as the actual needs of the current organic electroluminescent industry are concerned, the development of organic electroluminescent materials is far from enough, lagging behind the requirements of panel manufacturers

Method used

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  • A Novel Organic Electroluminescent Compound and Organic Electroluminescent Device
  • A Novel Organic Electroluminescent Compound and Organic Electroluminescent Device
  • A Novel Organic Electroluminescent Compound and Organic Electroluminescent Device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054]

[0055] The synthetic method of novel organic electroluminescent compound 5 is as follows:

[0056]

[0057]Under nitrogen protection, compound 1-a (4g, 507.50g / mol, 7.88mmol), compound 1-b (1eq, 2.96g, 375.50g / mol, 7.88mmol), sodium tert-butoxide (1.1eq, 0.83g , 96.1g / mol, 8.67mmol), tris(dibenzylideneacetone) dipalladium (0.05eq, 0.36g, 915g / mol, 0.39mmol), tri-tert-butylphosphine (0.05eq, 0.079g, 202.32g / mol, 0.39mmol), toluene (40ml) were added to the reaction flask, and after the addition was completed, the temperature was raised to reflux for 5 hours. After the reaction was completed, it was lowered to room temperature, then added water (40ml) and stirred for 15 minutes to obtain the filtrate, which was filtered through diatomaceous earth The organic phase was obtained by liquid separation, and the organic phase was dried with anhydrous magnesium sulfate and then spin-dried, and purified by column chromatography to obtain a novel organic electroluminescent...

Embodiment 2

[0059]

[0060] The synthesis method of novel organic electroluminescent compound 48 is as follows:

[0061]

[0062] Under nitrogen protection, compound 2-a (4g, 507.50g / mol, 7.88mmol), compound 2-b (1eq, 3.91g, 495.70g / mol, 7.88mmol), sodium tert-butoxide (1.1eq, 0.83g , 96.1g / mol, 8.67mmol), tris(dibenzylideneacetone) dipalladium (0.05eq, 0.36g, 915g / mol, 0.39mmol), tri-tert-butylphosphine (0.05eq, 0.079g, 202.32g / mol, 0.39mmol), toluene (40ml) were added to the reaction flask, and after the addition was completed, the temperature was raised to reflux for 5 hours. After the reaction was completed, it was lowered to room temperature, then added water (40ml) and stirred for 15 minutes to obtain the filtrate, which was filtered through diatomaceous earth The organic phase was obtained by liquid separation, and the organic phase was dried with anhydrous magnesium sulfate and then spin-dried, and purified by column chromatography to obtain a novel organic electroluminesce...

Embodiment 3

[0064]

[0065] The synthetic method of novel organic electroluminescent compound 62 is as follows:

[0066]

[0067] Under nitrogen protection, compound 3-a (4g, 395.29g / mol, 10.12mmol), compound 3-b (1eq, 4.39g, 433.62g / mol, 10.12mmol), sodium tert-butoxide (1.1eq, 1.07g , 96.1g / mol, 11.13mmol), tris(dibenzylideneacetone) dipalladium (0.05eq, 0.46g, 915g / mol, 0.506mmol), tri-tert-butylphosphine (0.05eq, 0.102g, 202.32g / mol, 0.506mmol), toluene (40ml) were added to the reaction flask, after the addition was completed, the temperature was raised to reflux for 5 hours, after the reaction was completed, the temperature was lowered to room temperature, and then water (40ml) was added and stirred for 15 minutes to obtain the filtrate, which was filtered through diatomaceous earth The organic phase was obtained by liquid separation, and the organic phase was dried with anhydrous magnesium sulfate and then spin-dried, and purified by column chromatography to obtain a novel or...

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Abstract

The invention discloses a novel organic electroluminescent compound and an organic electroluminescent device. The structural formula is as follows: wherein, L1 and L2 are phenylene, and L1 and L2 can be connected or not connected to each other through a single bond; R1, R2 are each independently hydrogen, deuterium, cyano, substituted or unsubstituted C1-C20 straight or branched chain alkyl, substituted or unsubstituted C3-C20 cycloalkyl, substituted or unsubstituted C3-C20 A heterocycloalkyl group, a substituted or unsubstituted C6-C30 aromatic hydrocarbon group, a substituted or unsubstituted C5-C30 heteroaromatic hydrocarbon group; R3 is a substituted or unsubstituted C6-C30 aromatic hydrocarbon group, a substituted or An unsubstituted C5-C30 heteroaromatic hydrocarbon group; m and n are independently 0 or 1, and the novel organic electroluminescent compound of the present invention is applied in an organic electroluminescent device, and at the same current density, the luminous efficiency has been improved With a relatively large increase, the starting voltage of the device is reduced, and the power consumption of the device is relatively reduced, so that the life of the device is correspondingly increased.

Description

technical field [0001] The invention relates to the technical field of organic electroluminescence, in particular to a novel organic electroluminescence compound and an organic electroluminescence device. Background technique [0002] Organic light-emitting devices (Organic Light-emitting Devices, OLED) are spontaneous light-emitting devices using the following principle: when an electric field is applied, fluorescent substances emit light through the recombination of holes injected from the positive electrode and electrons injected from the negative electrode. This self-luminous device has the characteristics of low voltage, high brightness, wide viewing angle, fast response, good temperature adaptability, etc., and is ultra-thin, and can be fabricated on flexible panels. It is widely used in mobile phones, tablet computers, TVs, lighting, etc. and other fields. [0003] Organic electroluminescent devices are like a sandwich structure, including electrode material film lay...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C211/61C07D213/16C09K11/06H01L51/54
CPCC07C211/61C07D213/16C09K11/06C07C2603/74C09K2211/1014C09K2211/1011C09K2211/1029C09K2211/1007H10K85/624H10K85/633H10K85/654C09K2211/1003H10K59/00H10K50/11H10K50/15H10K50/16H10K50/17
Inventor 钱超许军
Owner NANJING TOPTO MATERIALS CO LTD