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Electron-transporting material, synthetic method and OLED (organic light-emitting diode) prepared from electron-transporting material

An electron transport material and molecular structure technology, applied in the field of organic optoelectronic materials, can solve the problems of device carrier imbalance, reduced luminous efficiency, uneven light color, etc., and achieve long life, high luminous efficiency, and improved electron mobility. Effect

Inactive Publication Date: 2017-11-17
CHANGCHUN HYPERIONS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the large difference in the transport speed of the carrier holes and electrons, the carrier imbalance of the device is caused, and the recombination area of ​​electrons and holes tends to be biased towards one electrode, which leads to the quenching of excitons and loss of light, and the luminous efficiency is reduced. It will cause uneven light color and shorten the lifespan

Method used

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  • Electron-transporting material, synthetic method and OLED (organic light-emitting diode) prepared from electron-transporting material
  • Electron-transporting material, synthetic method and OLED (organic light-emitting diode) prepared from electron-transporting material
  • Electron-transporting material, synthetic method and OLED (organic light-emitting diode) prepared from electron-transporting material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] [Example 1] Synthesis of Compound 1

[0043]

[0044] *Synthesis of Intermediate 1-1

[0045] Under the protection of nitrogen, 8-bromo-3(4H)-isoquinolinone (1.87g, 8.4mmol), 2-methoxycarbonyl-pyridine-3 boronic acid (1.67g, 9.24mmol), four three Phenylphosphine palladium (0.7g, 1.08mmol), potassium carbonate (5.3g, 38.3mmol), 60mL of toluene, 20mL of ethanol and 20mL of distilled water were stirred at 120°C for 3h. After the reaction was completed, distilled water was used to stop the reaction, and the organic layer was extracted with ethyl acetate. MgSO for organic layer 4 dry. The solvent was distilled off under reduced pressure, and then purified with a silica gel column to obtain Intermediate 1-1 (1.58 g, 67%).

[0046] *Synthesis of Intermediate 1-2

[0047] Under the protection of nitrogen, add 1-1 (2.8g, 10mmol) to the reactor and dissolve it in polyphosphoric acid, and stir at 80°C for 24h. After the reaction was completed, water was added, a white pro...

Embodiment 2

[0054] [Example 2] Synthesis of Compound 5

[0055] According to the synthetic method of compound 1, compound 5 (2.58 g, 48%) was obtained.

[0056]

Embodiment 3

[0057] [Example 3] Synthesis of compound 11

[0058] According to the synthetic method of compound 1, compound 11 (2.58 g, 53%) was obtained.

[0059]

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PUM

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Abstract

The invention provides an electron-transporting material, a synthetic method and an OLED (organic light-emitting diode) prepared from the electron-transporting material and relates to the technical field of organic photoelectric materials. Different ligands are connected onto a main body structure, pi conjugation degree and eletrophilicity of the material are adjusted, so that charge migration directive property of the material is improved, electronic mobility is improved, and electron-transporting capacity of the material is improved. The synthetic method is simple and easy to operate. When applied to preparation of the OLED, the material particularly can be taken as an electron-transporting layer of the OLED for balancing carrier injection and transmission, and the OLED prepared from the electron-transporting material has the advantages of high luminous efficiency and long service life.

Description

technical field [0001] The invention relates to the technical field of organic photoelectric materials, in particular to an electron transport material, a synthesis method and an organic electroluminescent device. Background technique [0002] In recent years, it has the characteristics of self-illumination, wide viewing angle, full curing, full color, fast response, high brightness, low driving voltage, thin thickness, light weight, large-size and curved panels, low cost, and simple preparation. , organic electroluminescent devices (OLEDs) have been more and more applied in the display market, and have become the most potential display technology at present. [0003] Organic electroluminescence belongs to injection composite luminescence. Driven by external voltage, holes and electrons overcome the energy barrier and are injected into the organic layer from the anode and cathode respectively. The holes and electrons migrate in the organic layer and recombine in the light-em...

Claims

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Application Information

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IPC IPC(8): C07D471/06H01L51/50H01L51/54
CPCC07D471/06H10K85/654H10K85/6576H10K85/6574H10K85/6572H10K50/00H10K50/16H10K2102/00H10K2102/301
Inventor 蔡辉董秀芹
Owner CHANGCHUN HYPERIONS TECH CO LTD
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