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Light-emitting auxiliary material, preparation method thereof and organic light-emitting device

A technology of auxiliary materials and raw materials, applied in the direction of luminescent materials, electrical solid devices, electrical components, etc.

Pending Publication Date: 2020-12-15
JILIN OPTICAL & ELECTRONICS MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Research on organic electroluminescent materials has been widely carried out in academia and industry, but so far, stable and efficient organic layer materials for organic electrical components have not been fully developed, and the industrialization of this technology still faces many key problems

Method used

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  • Light-emitting auxiliary material, preparation method thereof and organic light-emitting device
  • Light-emitting auxiliary material, preparation method thereof and organic light-emitting device
  • Light-emitting auxiliary material, preparation method thereof and organic light-emitting device

Examples

Experimental program
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Effect test

Embodiment 1

[0070]

[0071] (1) Synthesis of Intermediate 1: Dissolve raw material A-1 (11.80g, 50.00mmol) and raw material B-1 (13.20g, 50.00mmol) in 40.00ml toluene alcohol and water (V tol : V:V=3:1:1) in the mixed solution, then replace the air with nitrogen 3 times, add tetrakis triphenylphosphine palladium (0.58g, 0.50mmol) and potassium carbonate (13.82g, 100.00mmol) under the protection of nitrogen ), stirred evenly, raised the temperature to 90°C, and refluxed for 5h. After the solution was cooled to room temperature, the organic phase was kept, and then the aqueous phase was extracted with ethyl acetate; The solvent was removed by an evaporator to obtain solid organics. Use a small amount of dichloromethane to completely dissolve the solid organic matter, then slowly add it dropwise into the petroleum ether solution, stir evenly, and a precipitate is precipitated, and the solid is obtained by suction filtration, rinsed with 300.00mL of absolute ethanol and 200.00mL of petrole...

Embodiment 2

[0083]

[0084] (1) Synthesis of Intermediate 1: Dissolve raw material A-26 (11.80g, 50.00mmol) and raw material B-26 (13.20g, 50.00mmol) in 40.00ml toluene alcohol and water (V tol : V:V=3:1:1) in the mixed solution, then change air 3 times, add tetrakis triphenylphosphine palladium (0.58g, 0.50mmol) and salt of wormwood (13.82g, 100.00mmol) under nitrogen protection, Stir evenly, heat up to 90°C, and reflux for 5 hours. After the solution is cooled to room temperature, keep the organic phase, and then extract the water phase with ethyl acetate; after combining the organic phases, dry them with anhydrous magnesium sulfate, and use rotary evaporation The solvent was removed by a vacuum cleaner to obtain solid organics. Use a small amount of dichloromethane to completely dissolve the solid organic matter, then slowly add it dropwise into the petroleum ether solution, stir evenly, and a precipitate is precipitated, and the solid is obtained by suction filtration, rinsed with ...

Embodiment 3

[0098]

[0099] (1) Synthesis of Intermediate 1: Dissolve raw material A-42 (11.80 g, 50.00 mmol) and raw material B-42 (14.71 g, 50.00 mmol) in 20.00 ml of anhydrous DMF solution, fully replace the air with nitrogen three times, Then dry potassium phosphate (31.80 g, 150.00 mmol) was added to the system, followed by N, N'-bis(2-phenylphenyl) oxalic acid (BPPO) (0.39 g, 1.00 mmol) and cuprous iodide ( CuI) (0.19g, 1.00mmol), the mixture was stirred, heated to 90°C, and refluxed for 24h. After the solution was cooled to room temperature, the solution was slowly added dropwise to water, and stirred for 1h. The solution was left to stand, and precipitated out. The solid was obtained by suction filtration, washed successively with 300.00 mL of absolute ethanol and 200.00 mL of petroleum ether, and dried to obtain a solid organic matter. Use a small amount of dichloromethane to completely dissolve the solid organic matter, then slowly add it dropwise into the petroleum ether sol...

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Abstract

The invention discloses a light-emitting auxiliary material. The structural general formula of the light-emitting auxiliary material is shown as a chemical formula I. The invention also discloses a preparation method of the light-emitting auxiliary material and an application of the light-emitting auxiliary material in an organic light-emitting device. The organic light-emitting device prepared from the light-emitting auxiliary material provided by the invention has the characteristics of low driving voltage, high light-emitting efficiency and long service life.

Description

technical field [0001] The invention relates to the technical field of luminescent materials, and more specifically relates to a luminescent auxiliary material, a preparation method thereof and an organic electroluminescent device. Background technique [0002] In recent years, organic light-emitting diodes (OLEDs), as a new and promising display technology, have gradually entered people's field of vision. OLED is an electroluminescent device formed by a multilayer organic thin film structure, wherein the organic thin film is a film of organic light-emitting material formed on a substrate by evaporation, deposition or spin coating process. [0003] In such an organic light emitting diode, when a voltage is applied between the anode and the cathode, holes from the anode and electrons from the cathode are injected into the organic material layer. The generated excitons generate light with a specific wavelength when they migrate to the ground state, which has the following str...

Claims

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Application Information

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IPC IPC(8): C07D307/77C07D409/12C07D333/50C07D221/18C07D311/78C07D307/91C07D405/12C07D409/14C07D493/04C07D409/04C07D405/04C07D495/04C07D335/04C07D307/79C07D265/34C07D279/14C07D241/38C07D413/12C07D319/14C09K11/06H01L51/50H01L51/54
CPCC07D307/77C07D409/12C07D333/50C07D221/18C07D311/78C07D307/91C07D405/12C07D409/14C07D493/04C07D409/04C07D405/04C07D495/04C07D335/04C07D307/79C07D265/34C07D279/14C07D241/38C07D413/12C07D319/14C09K11/06C09K2211/1011C09K2211/1014C09K2211/1022C09K2211/1029C09K2211/1033C09K2211/1037C09K2211/1044C09K2211/1088C09K2211/1092H10K85/631H10K85/636H10K85/626H10K85/633H10K85/654H10K85/6576H10K85/657H10K85/6572H10K85/6574H10K50/11H10K50/171H10K50/15H10K50/16H10K50/17
Inventor 汪康黄悦王进政贾宇王士凯敖日斯楞马晓宇
Owner JILIN OPTICAL & ELECTRONICS MATERIALS
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