Electronic transmission material, synthesis method and organic light emitting device

A technology of electron transport materials and organic light-emitting devices, which is applied in the direction of electric solid-state devices, electrical components, organic chemistry, etc., can solve the problems of low luminous efficiency, low recombination efficiency, and uneven light color of light-emitting devices, and achieve charge transfer directionality Enhanced, good stability, high luminous efficiency effect

Inactive Publication Date: 2017-10-20
CHANGCHUN HYPERIONS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, because the transport speed of electrons in carriers is lower than that of holes, the recombination efficiency of electrons and holes is low and the recombination area is shifted, which leads to low luminous efficiency, uneven light color, Low lifespan. With the further improvement of market requirements for OLED devices, higher luminous efficiency, longer lifespan, and lower cost have become the development trend of OLED devices. Therefore, how to improve electron mobility and make carrier injection balance an urgent problem

Method used

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  • Electronic transmission material, synthesis method and organic light emitting device
  • Electronic transmission material, synthesis method and organic light emitting device
  • Electronic transmission material, synthesis method and organic light emitting device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] [Example 1] Synthesis of compound 3

[0043]

[0044] *Synthesis of intermediate 3-1

[0045] Under nitrogen protection, 8-bromo-6-phenylisoquinoline (2.39g, 8.4mmol), 2-methoxycarbonyl-pyridine-3boronic acid (1.67g, 9.24mmol), tetrakistriphenylphosphine 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 by silica gel column to obtain intermediate 3-1 (1.86 g, 65%).

[0046] *Synthesis of intermediate 3-2

[0047] Under nitrogen protection, add 3-1 (3.4 g, 10 mmol) dissolved in polyphosphoric acid to the reactor, and stir at 80° C. for 24 h. After the reaction was completed, water was added, a white product was precipitate...

Embodiment 2

[0054] [Example 2] Synthesis of Compound 10

[0055] According to the synthetic method of compound 3, compound 10 (2.45 g, 52%) was obtained.

[0056]

Embodiment 3

[0057] [Example 3] Synthesis of compound 16

[0058] According to the synthetic method of compound 3, compound 16 (2.71 g, 45%) was obtained.

[0059]

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Abstract

The invention provides an electronic transmission material, a synthesis method and an organic light emitting device, relates to the technical field of organic optoelectronic materials. Material pi conjugation degree and electrophilicity are adjusted by connection of different ligands with a main structure, so that charge migration orientation of the electronic transmission material is enhanced, and further stability and charge transfer capability of the electronic transmission material are improved. The electronic transmission material can be used as an electron transport layer material for the preparation of the organic light emitting device, and can effectively solve the problem of imbalance of charge carriers in the organic light emitting device, and the organic light emitting device has advantages of high luminous efficiency and long 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 light-emitting device thereof. Background technique [0002] Organic Light-Emitting Diode (OLED) refers to an organic light-emitting device that applies the principle of electroluminescence. Organic light-emitting materials are excited by current and voltage under the action of an electric field to emit light. OLED has self-luminescence, wide viewing angle, Full-cure, full-color, fast response, high brightness, low driving voltage, thin thickness, light weight, large-size and curved panels can be produced, low cost, simple preparation, etc., in recent years, it has been more and more popular in the display market. Many applications, become the most potential display technology. [0003] After years of in-depth research, OLED technology has made significant progress in light-emitting materia...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): C07D471/06C07D519/00H01L51/54
CPCC07D471/06C07D519/00H10K85/6576H10K85/6574H10K85/6572
Inventor蔡辉董秀芹
OwnerCHANGCHUN HYPERIONS TECH CO LTD