A nitrogen-doped material and its application

A heteroaryl, selected technology, applied in the application field of organic electroluminescent devices, can solve the problems of electron and hole mismatch, efficiency roll-off, and shortened life of the light-emitting layer, and achieve voltage and efficiency improvement and increase The effect of life, good thermal stability

Active Publication Date: 2022-04-15
BEIJING ETERNAL MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The single carrier transport capability will cause a mismatch of electrons and holes in the light-emitting layer, resulting in severe efficiency roll-off and shortened lifetime

Method used

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  • A nitrogen-doped material and its application
  • A nitrogen-doped material and its application
  • A nitrogen-doped material and its application

Examples

Experimental program
Comparison scheme
Effect test

Synthetic example 1

[0036] Synthesis Example 1: Synthesis of Compound M1

[0037]

[0038] In the reaction flask, add 1-bromo-5-iodonnaphthalene 33g (100mmol), o-nitrophenylboronic acid 18.4g (110mmol), Pd 2 (PPh3) 4 0.9g, toluene 500mL, potassium carbonate 43.3g (314mmol), water 100Ml, 100°C for 3.5h. After the reaction is complete, stop the reaction. After cooling to room temperature and filtering, the obtained solid was purified by recrystallization from toluene to obtain white powder M1-1.

[0039]In the reaction flask, add M1-116.3g (100mmol), triphenylphosphine 26.2g (100mmol), o-dichlorobenzene 500ml, and react at 140°C for 10h. After the reaction is complete, stop the reaction. After cooling to room temperature and filtering, the obtained solid was purified by recrystallization from toluene to obtain white powder M1-2.

[0040] In the reaction bottle, add 29.5g (100mmol) of M1-2, 2g of CuI-ZMS5, 10g of S, 12g of KOH, and 300mL of DMF to react for 24h. After the reaction is comple...

Synthetic example 2

[0042] Synthesis Example 2: Synthesis of Compound M2

[0043] In the same way, by replacing the chloropyridine boronic acid in different positions, we can get the following

[0044]

Synthetic example 3

[0045] Synthesis Example 3: Synthesis of Compound M3

[0046] In the same way, o-nitrophenylboronic acid is replaced by o-nitropyridineboronic acid in the reaction scheme, and chloropyridineboronic acid is replaced by chlorophenylboronic acid in the reaction formula to obtain

[0047]

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PUM

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Abstract

The invention discloses a compound of the following general formula (1): in the formula (1), when the compound of the invention is used as a host material in an OLED light-emitting layer, it exhibits excellent device performance and stability. The present invention simultaneously protects the organic electroluminescent device using the compound of the above general formula.

Description

technical field [0001] The invention relates to a novel organic compound, in particular to a compound used in an organic electroluminescent device and its application in the organic electroluminescent device. Background technique [0002] Organic electroluminescent display (hereinafter referred to as OLED) has a series of advantages such as self-luminescence, low-voltage DC drive, full curing, wide viewing angle, light weight, simple composition and process, etc. Compared with liquid crystal display, organic electroluminescent display is not It needs a backlight source, has a large viewing angle, low power, and its response speed can reach 1000 times that of a liquid crystal display, but its manufacturing cost is lower than that of a liquid crystal display with the same resolution. Therefore, organic electroluminescent devices have broad application prospects. [0003] With the continuous advancement of OLED technology in the two major fields of lighting and display, people ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D495/14C07D491/147C07D471/14C09K11/06H01L51/50H01L51/54
CPCC07D495/14C07D491/147C07D471/14C09K11/06H10K85/622H10K85/615H10K85/654H10K85/6576H10K85/6574H10K85/657H10K85/6572H10K50/11
Inventor 李之洋邢其锋邵爽
Owner BEIJING ETERNAL MATERIAL TECH
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