Compound and application thereof

A general formula compound and selected technology, applied in the field of organic compounds, can solve the problems of reducing recombination probability, affecting power efficiency, reducing device luminous efficiency, etc., and achieve the effect of improving electron injection and transmission, and improving injection ability

Inactive Publication Date: 2020-03-06
BEIJING ETERNAL MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally speaking, electron-transporting materials are compounds with electron-deficient nitrogen-containing heterocyclic groups. Most of them have high electron affinity, so they have a strong ability to accept electrons. , common electron transport materials such as AlQ 3 The electron mobility of (octahydroxyquinoline aluminum) is much lower than the hole mobility of the hole transport material, so in the OLED device, on the one hand, i

Method used

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  • Compound and application thereof
  • Compound and application thereof
  • Compound and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0057] Preparation of intermediate 1-1

[0058] After dissolving 2,7-dibromophenanthrenequinone (100g, 0.27mol) in 1000ml 1,4-dioxane in a flask, add biboronic acid pinacol ester (140g, 0.55mol), potassium acetate (81g , 0.82mol), under the protection of nitrogen, [1,1'-bis(diphenylphosphino)ferrocene]palladium dichloride (4g, 5.5mmol) was added, replaced by nitrogen 3 times, heated to reflux and stirred for 3 hours, TLC showed that the reaction was complete, concentrated, added 300ml ethyl acetate and 200ml water, left to separate the liquid, the aqueous phase was extracted twice with ethyl acetate, the organic phase was combined, dried and suction filtered, concentrated, and dried to obtain off-white solid compound 1- 1 (107 g, 86%).

[0059] Preparation of compound C2

[0060] Intermediate 1-1 (30g, 0.065mol) was added to a flask containing 300ml of tetrahydrofuran and 60ml of water, followed by adding 4-chloro-2,6-diphenylpyrimidine (35g, 0.13mol), potassium carbonate (2...

Embodiment approach

[0086] The OLED includes a first electrode and a second electrode, and a layer of organic material between the electrodes. The organic material can in turn be divided into regions. For example, the organic material layer may include a hole transport region, a light emitting layer, and an electron transport region.

[0087] In particular embodiments, a substrate may be used either below the first electrode or above the second electrode. The substrates are all glass or polymer materials with excellent mechanical strength, thermal stability, water resistance and transparency. In addition, a thin-film transistor (TFT) may be provided on a substrate for a display.

[0088] The first electrode may be formed by sputtering or depositing a material used as the first electrode on the substrate. When the first electrode is used as the anode, oxide transparent conductive materials such as indium tin oxide (ITO), indium zinc oxide (IZO), tin dioxide (SnO2), zinc oxide (ZnO) and any comb...

Embodiment 1

[0126] Using the compound C2 of the present invention as an electron transport material, an organic electroluminescent device was prepared according to the above-mentioned preparation process of the organic electroluminescent device, and the device performance was tested according to the above-mentioned organic electroluminescent device testing method.

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Abstract

The invention protects a compound and application thereof. The compound is represented by the following formula (1) as shown in the specification, wherein A<1>-A<8> are same or different and are independently selected from one of the following formula (1-1) or formula (1-2) as shown in the specification or the following groups: hydrogen, deuterium, substituted or unsubstituted C1-C10 alkyl, substituted or unsubstituted C1-C10 cycloalkyl, substituted or unsubstituted C1-C10 alkoxy, substituted or unsubstituted C6-C30 aryl, substituted or unsubstituted C3-C30 heteroaryl, and besides at least twoof the A<1>-A<8> are selected from the formula (1-1) or the formula (1-2) as shown in the specification. L<1> and L<2> are each independently selected from one of a single bond, substituted or unsubstituted C6-C30 arylene, and substituted or unsubstituted C3-C30 heteroarylene; and Ar<1> and Ar<2> are independently selected from one of substituted or unsubstituted C3-C30 heteroaryl. When being used as an electron transport material in an OLED device, the compound exhibits excellent device performance and stability. The invention also protects organic electroluminescent devices using the compound of the general formula.

Description

technical field [0001] The invention relates to an organic compound, which can be used as an electron transport layer material of an organic electroluminescent device; the invention also relates to the application of the compound in the organic electroluminescent device. Background technique [0002] At present, with the continuous advancement of OLED technology in the two major fields of display and lighting, people pay more attention to the research of its core materials. As core materials, common functional organic materials include: hole injection materials, hole transport materials, hole blocking materials, electron injection materials, electron transport materials, electron blocking materials, and luminescent host materials and luminescent objects (dye). [0003] Various types of electron transport materials with strong transport capacity and high stability have been reported in previous articles and patents. Generally speaking, electron-transporting materials are com...

Claims

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Application Information

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IPC IPC(8): C07D239/26C07D251/24C07D401/14C07D239/74C07D403/10C07D213/50C07D215/14C07D409/14C07D277/24C07D233/64C07D263/32C07D241/12C07D217/02H01L51/50H01L51/54
CPCC07D239/26C07D251/24C07D401/14C07D239/74C07D403/10C07D213/50C07D215/14C07D409/14C07D277/24C07D233/64C07D263/32C07D241/12C07D217/02H10K85/615H10K85/626H10K85/654H10K85/655H10K85/656H10K85/6572H10K50/16
Inventor 孙恩涛冯嘉宁任雪艳李昂
Owner BEIJING ETERNAL MATERIAL TECH
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