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Compound and application thereof, and organic electroluminescent device comprising compound

A compound, unsubstituted technology, applied in the field of organic electroluminescent devices, can solve the problems of OLED product efficiency, lifespan, cost, etc. that cannot be completely resolved, and achieve the effects of high efficiency and lifespan, reduced driving voltage, and improved efficiency and lifespan

Pending Publication Date: 2021-02-23
BEIJING ETERNAL MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The currently used OLED materials and device structures cannot completely solve the problems of OLED product efficiency, lifespan, cost, etc.

Method used

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  • Compound and application thereof, and organic electroluminescent device comprising compound
  • Compound and application thereof, and organic electroluminescent device comprising compound
  • Compound and application thereof, and organic electroluminescent device comprising compound

Examples

Experimental program
Comparison scheme
Effect test

Synthetic example 1

[0174] Synthesis Example 1: Synthesis of Compound P4

[0175]

[0176] (1) 2-chloro-4-phenylquinazoline (30mmol), intermediate M1 (30mmol), three (dibenzylideneacetone) dipalladium (0.30mmol), tri-tert-butylphosphorus toluene solution (0.30 mmol), sodium tert-butoxide (60mmol), xylene (300mL), heated to 100°C for 12h under nitrogen protection, the reaction was completed by TLC monitoring, and the reaction liquid was concentrated and separated by column chromatography to obtain intermediate P4-A.

[0177]

[0178] (2) Intermediate P4-A (25mmol), 9,9-dimethylacridine (25mmol), tris(dibenzylideneacetone) dipalladium (0.25mmol), tri-tert-butylphosphonium toluene solution (0.25 mmol), sodium tert-butoxide (50mmol), xylene (300mL), were added to the reaction flask, heated to reflux reaction for 12h under nitrogen protection, TLC monitored the completion of the reaction, the reaction solution was cooled and filtered, and the filter cake was washed with ethanol to obtain the com...

Synthetic example 2

[0180] Synthesis Example 2: Synthesis of Compound P15

[0181] The difference from Synthesis Example 1 is that 2-chloro-4-phenylquinazoline is replaced by 2-chloro-4,6-diphenyl-1,3,5-triazine of the same amount, and the intermediate Substitution of intermediate M1 by an equivalent amount of intermediate M2 affords compound P15.

[0182] MS: C 46 h 33 N 5 , theoretical value: 655.27, actual value: 656.28.

Synthetic example 3

[0183] Synthesis Example 3: Synthesis of Compound P26

[0184]

[0185] (1) 2-chloro-4-phenylquinazoline (30mmol), p-fluorophenylboronic acid (30mmol), tetrakis (triphenylphosphine) palladium 0.3mmol, potassium carbonate (60mmol), 1,4-diox Hexacyclic (300mL) and 60mL of water were added to the reaction flask, heated to 120°C for 5h under the protection of nitrogen, and the reaction was monitored by TLC. The reaction solution was poured into water for filtration, and the filter cake was washed with ethanol to obtain intermediate P26-A.

[0186]

[0187] (2) Add intermediate P26-A (30mmol), intermediate M3 (30mmol), cesium carbonate (60mmol), DMF (300mL) into the reaction flask, heat to reflux reaction for 12h under the protection of nitrogen, and monitor the completion of the reaction by TLC , Pour the reaction solution into water to filter, and wash the filter cake with ethanol to obtain the intermediate P26-B.

[0188]

[0189] (3) Same as step (2) in Synthesis Exam...

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Abstract

The invention relates to a compound and application thereof, and an organic electroluminescent device comprising the compound, wherein the compound has a structure shown as a formula (I). According tothe invention, the parent nucleus of the compound provided by the invention is formed by fusing carbazole and an aromatic ring or an aromatic heterocyclic ring, so that the ET of the compound is slightly reduced due to the expansion of the conjugated system, and the injection barrier of charges is reduced so as to make the molecule provided by the invention have lower voltage and higher efficiency; and quinazoline and triazine are matched to serve as electron withdrawing groups, so that carrier transmission in the device is relatively balanced, efficiency roll-off is not easy to cause, the efficiency of the device is obviously improved, and the service life of the device is obviously prolonged.

Description

technical field [0001] The invention relates to the technical field of organic electroluminescence, in particular to a compound and its application, and an organic electroluminescence device containing it. Background technique [0002] In recent years, optoelectronic devices based on organic materials have become increasingly popular. The inherent flexibility of organic materials makes them very suitable for manufacturing on flexible substrates. They can design and produce beautiful and cool optoelectronic products according to requirements, and obtain incomparable advantages over inorganic materials. Examples of such organic optoelectronic devices include organic light emitting diodes (OLEDs), organic field effect transistors, organic sensors, and the like. Among them, OLED is developing rapidly, and has achieved commercial success in the field of information display. OLED can provide high-saturation red, green, and blue colors, and the full-color display device made of i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D401/14C07D403/14C07D413/14C07D417/14C07D471/04C07D471/14H01L51/54H01L51/50
CPCC07D401/14C07D413/14C07D417/14C07D403/14C07D471/14C07D471/04H10K85/654H10K85/6572H10K85/657H10K50/11
Inventor 李之洋黄鑫鑫曾礼昌
Owner BEIJING ETERNAL MATERIAL TECH
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