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Compound, application thereof and organic electroluminescence device

A compound and unsubstituted technology, applied in the field of organic electroluminescence, can solve the problems that the types and properties of electron transport materials cannot fully meet the needs of devices, so as to improve the efficiency of electron injection and migration, strong ability to accept electrons, and high electron affinity. Harmony effect

Pending Publication Date: 2020-10-09
BEIJING ETERNAL MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In the above prior art, in order to improve the performance of electron transport materials and the performance of OLED devices, electron transport materials with specific structures are disclosed. However, with the gradual improvement of the performance requirements of OLED devices in the market, there are various types of devices. In order to meet the performance of various OLED devices, the types and properties of the existing electron transport materials can no longer fully meet the device requirements, and more types of high-performance electron transport materials need to be developed

Method used

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  • Compound, application thereof and organic electroluminescence device
  • Compound, application thereof and organic electroluminescence device
  • Compound, application thereof and organic electroluminescence device

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0137] Synthesis of compound C1:

[0138]

[0139] (1) Preparation of compound 1-2

[0140]Add raw materials 1-1 (38.7g, 100mmol), 3-chlorophenylboronic acid (15.6g, 100mmol), potassium carbonate (41.4g, 300mmol) and tetrakistriphenylphosphopalladium (1.15g, 1mmol) in the single-necked bottle, add Toluene 300mL, ethanol 100mL, water 60mL, under the protection of nitrogen, the reaction was refluxed overnight at 110°C. A solid precipitated out during the reaction. It was detected by thin layer chromatography (TLC) that the reaction of raw materials was completed, the reaction was stopped and cooled to room temperature, the precipitated solid was filtered, rinsed with water and ethanol respectively, and dried. The target compound 1-2 (38.5 g, yield 92%) was obtained.

[0141] (2) Preparation of compound 1-3

[0142] Compound 1-2 (33.5 g, 0.08 mol), pinacol borate (30.5 g, 0.12 mol) and potassium acetate (24 g, 0.24 mol) were added to a flask containing 1,4-dioxane (300 mL)...

preparation example 2

[0146] Synthesis of compound C17:

[0147]

[0148] (1) Preparation of compound 2-1

[0149] Add raw materials 4-bromobenzenecyano (18.1g, 100mmol), 4-chlorophenylboronic acid (15.6g, 100mmol), potassium carbonate (41.4g, 300mmol), tetrakistriphenylphosphopalladium (1.15g, 1mmol) in the single-necked bottle , add 300 mL of toluene, 100 mL of ethanol, and 60 mL of water, and react under reflux at 110° C. for 4 hours under the protection of nitrogen. It was detected by TLC that the reaction of the raw materials was complete, the reaction was stopped and cooled to room temperature, the liquid was separated, the organic phase was washed with water, dried, the solvent was removed under reduced pressure, purified by column chromatography, and dried. The target compound 2-1 (19.2 g, yield 90%) was obtained.

[0150] (2) Preparation of compound 2-2

[0151] Add compound 2-1 (17g, 0.08mol), pinacol borate (30.5g, 0.12mol) and potassium acetate (24g, 0.24mol) into a flask containi...

preparation example 3

[0157] Synthesis of compound C25:

[0158]

[0159] The difference between the specific synthesis steps and Preparation Example 1 is that the raw material 1-1 was replaced with the same amount of raw material 3-1 to obtain white solid compound C25, the calculated molecular weight: 665.25, and the measured value C / Z: 665.3.

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Abstract

The invention relates to a compound, application thereof and an organic electroluminescence device. The compound has a structure shown as a formula (1). The compound is used as an electron transport material in an organic electroluminescent device; the organic electroluminescent device includes a substrate, a first electrode, a second electrode, and at least one organic layer interposed between the first electrode and the second electrode, the organic layer containing any one or a combination of at least two of the compounds. The compound provided by the invention has relatively high electroninjection capability and electron migration capability, and when the compound is used for an organic electroluminescence device, the device can have relatively high light-emitting efficiency, relatively low starting voltage, relatively long service lifetime and high device stability.

Description

technical field [0001] The invention relates to the technical field of organic electroluminescence, in particular to a compound and its application, and an organic electroluminescence device. Background technique [0002] Organic electroluminescent (OLED: Organic Light Emission Diodes) devices are a type of device with a sandwich-like structure, including positive and negative electrode film layers and an organic functional material layer sandwiched between the electrode film layers. Apply voltage to the electrodes of the OLED device, positive charges are injected from the positive electrode, and negative charges are injected from the negative electrode. Under the action of the electric field, the positive and negative charges migrate in the organic layer and recombine to emit light. Due to the advantages of high brightness, fast response, wide viewing angle, simple process, and flexibility, OLED devices have attracted much attention in the field of new display technology an...

Claims

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Application Information

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IPC IPC(8): C07D403/10C07D403/14C07D405/14C07D409/14C07D401/14H01L51/50H01L51/54
CPCC07D403/10C07D403/14C07D405/14C07D409/14C07D401/14H10K85/615H10K85/6576H10K85/6574H10K85/6572H10K50/16H10K50/00
Inventor 孙恩涛陈继荣刘叔尧吴俊宇
Owner BEIJING ETERNAL MATERIAL TECH
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