Compound, preparation method thereof and organic light-emitting device

A compound and catalyst technology, applied in the field of photoelectric materials, can solve the problems of unstable performance of host materials, imbalance of electrons and holes, etc., achieve stable performance, high glass transition temperature, and improve luminous efficiency

Inactive Publication Date: 2016-03-30
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a compound and its preparation method and an organic electroluminescent device, which solves the technical problems of unstable host material properties and unbalanced electrons and holes in the prior art, and improves the luminous efficiency of the organic electroluminescent device

Method used

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  • Compound, preparation method thereof and organic light-emitting device
  • Compound, preparation method thereof and organic light-emitting device
  • Compound, preparation method thereof and organic light-emitting device

Examples

Experimental program
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Embodiment approach

[0039] According to one embodiment of the compound of the present invention, the compound is shown in formula I-1:

[0040]

[0041] According to the compound of the present invention, 2-benzothiophene is introduced as a substituent, and the substituent contains a sulfur atom, and the sulfur atom has a strong electron-withdrawing ability, so its ability to transport electrons is enhanced, thereby ensuring its performance in organic electroluminescent devices. The transport of electrons and holes in the organic light-emitting layer is more balanced, and the luminous efficiency of the organic light-emitting diode is improved.

[0042] According to another aspect of the present invention, the preparation method of the compound shown in formula I-1 is provided, comprising:

[0043] Coupling step: performing a coupling reaction between the compound shown in formula II and the compound shown in formula III to obtain the compound shown in formula I-1;

[0044]

[0045] Accordi...

Embodiment 1

[0069] According to the preparation method of the present invention, the compound shown in the synthetic formula V is first obtained by reacting the compound shown in the formula VI with the compound shown in the formula VII; Put it into the reactor, under argon protection, add anhydrous tetrahydrofuran as a solvent, cool to -70°C and slowly add 1.0 mole of 2M butyllithium solution dropwise, react for 5 to 8 hours, add anhydrous methanol to quench, then add di Extract with methyl chloride, dry the organic layer with anhydrous sodium sulfate and spin-dry, directly add an appropriate amount of palladium acetate and an appropriate amount of anhydrous potassium acetate to the intermediate after spin-drying, continue the reaction for 10 hours, track the plate to confirm the completion of the reaction After adding dichloromethane for extraction, the organic layer was dried with anhydrous sodium sulfate and then spin-dried, passed through the column with dichloromethane / petroleum ethe...

Embodiment 2

[0073] According to the preparation method of the present invention, the compound shown in the synthetic formula V is first obtained by reacting the compound shown in the formula VI with the compound shown in the formula VII; Put it into the reactor, under argon protection, add anhydrous tetrahydrofuran as a solvent, cool to -78°C, slowly add 2.0 moles of 2M butyllithium solution dropwise, react for 8 hours, add anhydrous methanol to quench, and then add dichloro Methane extraction, the organic layer was dried with anhydrous sodium sulfate and then spin-dried, and an appropriate amount of palladium acetate and an appropriate amount of anhydrous potassium acetate were directly added to the spin-dried intermediate, and the reaction was continued for 12 hours, followed by pointing the plate, and adding two Extract with methyl chloride, dry the organic layer with anhydrous sodium sulfate and spin dry, pass through the column with dichloromethane / petroleum ether (volume ratio: 1:5),...

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Abstract

The invention discloses a compound, a preparation method thereof and an organic light-emitting device. The compound is shown as a formula I in the specification, wherein the R group is a substituent group containing an atom N, O or S. The preparation method of the compound comprises a coupling step of performing a coupling reaction on a compound shown as a formula II and a compound shown as a formula III to obtain a compound shown as a formula I-1. The compound is taken as a main body material of an organic light-emitting layer of the organic light-emitting device. The material is stable in performance, and the external quantum efficiency of the organic light-emitting device can be increased, so that the light-emitting efficiency of the organic light-emitting device can be increased.

Description

technical field [0001] The invention relates to the field of photoelectric materials, in particular to a compound, a preparation method thereof, and an organic electroluminescent device. Background technique [0002] An organic electroluminescent device is a self-luminous device that sandwiches a light-emitting layer between electrodes. When a voltage is applied, electrons injected from the cathode and holes injected from the anode recombine at the luminescent center to form molecular excitons, and the molecular excitons release energy and emit light when they return to the ground state. Organic electroluminescent devices have the characteristics of low voltage, high brightness, wide viewing angle, fast response and good temperature adaptability, so they are widely used in electronic product displays such as TV sets, mobile phones, and MP3 players. [0003] Organic electroluminescent materials are generally divided into singlet fluorescent dyes and triplet phosphorescent dy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D409/04C07D405/04C07D401/04C07D221/20H01L51/54
CPCC07D221/20C07D401/04C07D405/04C07D409/04H10K85/6576H10K85/6574H10K85/6572C09K11/025H10K85/342H10K50/11H10K2101/10
Inventor 陈建陆相晚李宾朱涛袁慧芳唐文浩方群尹海斌董安鑫
Owner BOE TECH GRP CO LTD
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