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Organic electroluminescent compound, preparation method thereof and organic electroluminescent device containing organic electroluminescent compound

A luminescence and compound technology, which is applied in the field of luminescent materials, can solve problems such as unsatisfactory service life, and achieve the effects of not being easy to crystallize, reducing driving voltage, and improving luminous efficiency

Inactive Publication Date: 2021-05-07
JILIN OPTICAL & ELECTRONICS MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although organic electroluminescent elements using these materials have improved in terms of hole transport efficiency, luminous efficiency, and lifetime; however, their lifetime is still not ideal.

Method used

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  • Organic electroluminescent compound, preparation method thereof and organic electroluminescent device containing organic electroluminescent compound
  • Organic electroluminescent compound, preparation method thereof and organic electroluminescent device containing organic electroluminescent compound
  • Organic electroluminescent compound, preparation method thereof and organic electroluminescent device containing organic electroluminescent compound

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Embodiment 1: preparation compound HT-014

[0056]

[0057] (1) After adding the raw material B-014 (33.00mmol) and 50.00mLTHF into the reaction vessel, fully replace the air with nitrogen three times and lower the temperature to -78°C, and slowly add n-BuLi (33.00mmol) dropwise to the aforementioned mixture for reaction 2h, raw material A-014 (30.00mmol) was added, warmed up to room temperature, after stirring the mixture at room temperature for 5 hours, water was added and the mixture was extracted with dichloromethane. The extracted organic layer was then dried using sodium sulfate, and the solvent was removed using a rotary evaporator to obtain a solid organic. 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 absolute ethanol and petroleum ether in turn, an...

Embodiment 2

[0068] Embodiment 2: preparation compound HT-044

[0069]

[0070] (1) After adding the raw material B-044 (33.00mmol) and 50.00mLTHF into the reaction vessel, fully replace the air with nitrogen three times and lower the temperature to -78°C, and slowly add n-BuLi (33.00mmol) dropwise to the aforementioned mixture for reaction 2h, add raw material A-044 (30.00mmol), warm up to room temperature, stir the mixture at room temperature for 5 hours, add water and extract the mixture with dichloromethane; then use sodium sulfate to dry the extracted organic layer, and use a rotary evaporator Remove the solvent to obtain a solid organic matter; use a small amount of dichloromethane to completely dissolve the solid organic matter, and then slowly add it dropwise to the petroleum ether solution, stir evenly, and a precipitate is precipitated, and the solid is obtained by suction filtration, and then rinsed with absolute ethanol and petroleum ether. Wash and dry to obtain intermediat...

Embodiment 3

[0082] Embodiment 3: preparation compound H-052

[0083]

[0084] (1) After adding the raw material B-055 (33.00mmol) and 70.00mLTHF into the reaction vessel, fully replace the air with nitrogen three times and lower the temperature to -78°C, and slowly add n-BuLi (33.00mmol) dropwise to the aforementioned mixture for reaction 2h, add raw material A-055 (30.00mmol), warm to room temperature, stir the mixture at room temperature for 5 hours, add water and extract the mixture with dichloromethane; then use sodium sulfate to dry the extracted organic layer, and use a rotary evaporator Remove the solvent to obtain a solid organic matter; use a small amount of dichloromethane to completely dissolve the solid organic matter, and then slowly add it dropwise to the petroleum ether solution, stir evenly, and a precipitate is precipitated, and the solid is obtained by suction filtration, and then rinsed with absolute ethanol and petroleum ether. Wash and dry to obtain intermediate 1 ...

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Abstract

The invention discloses an organic electroluminescent compound, a preparation method thereof and an organic electroluminescent device containing the organic electroluminescent compound. The structural general formula of the organic electroluminescent compound is as follows: the organic electroluminescent compound regulates the position or activity of a substituent group through coordination of a heterocyclic ligand, and in addition, an amine unit on the complex has lower ionization potential, better electron donating property and higher hole mobility; according to the organic electroluminescent compound, the driving voltage of a device can be reduced, the service life is prolonged, and the luminous efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of luminescent materials, and more specifically relates to an organic electroluminescent compound, a preparation method thereof and an organic electroluminescent device containing the same. Background technique [0002] At present, organic electroluminescent diode (hereinafter referred to as OLED) is an important electroluminescent device. Its active light does not require a backlight source, it has high luminous efficiency, a large viewing angle, fast response speed, and a wide range of temperature adaptation. The advantages of low power consumption, lighter and thinner, flexible display and huge application prospects have attracted the attention of many researchers. [0003] The organic electroluminescence element is a self-luminous element utilizing the principle that a fluorescent substance emits light by recombination energy of holes injected from the anode and electrons injected from the cathode by app...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D311/04C07D335/06C07D405/12C07D405/14C07D409/14C09K11/06H01L51/54
CPCC07D311/04C07D335/06C07D405/12C07D405/14C07D409/14C09K11/06C09K2211/1088C09K2211/1092C09K2211/1029H10K85/654H10K85/6576H10K85/6574H10K85/6572
Inventor 王进政黄悦韩文坤徐佳楠王永光汪康马晓宇
Owner JILIN OPTICAL & ELECTRONICS MATERIALS
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