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Compound and application thereof

A compound and unsubstituted technology, applied in the field of organic electroluminescence, can solve the problems of poor operating voltage, luminous efficiency and service life, and achieve the effects of stronger rigidity, lower driving voltage, and improved luminous efficiency

Pending Publication Date: 2021-06-18
BEIJING ETERNAL MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the existing organic electroluminescent materials are still not good in terms of operating voltage, luminous efficiency, and service life.

Method used

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  • Compound and application thereof
  • Compound and application thereof
  • Compound and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Synthetic example 1

[0104] Synthesis Example 1: Synthesis of Compound P6

[0105]

[0106] Add M (50mmol), 2-chloro-4-phenylquinazoline (55mmol), cesium carbonate (60mmol), N,N-dimethylformamide (DMF, 150mL) into the reaction flask, reflux for 4h, After the reaction was complete, it was lowered to room temperature, and the reaction was also poured into water for filtration. The filter cake was washed once with ethanol and then recrystallized from toluene to obtain compound P6.

Synthetic example 2

[0107] Synthesis Example 2: Synthesis of Compound P18

[0108]

[0109] Add M (50mmol), 2-(4-fluorophenyl)-4-phenylquinazoline (55mmol), cesium carbonate (60mmol), DMF (150mL) into the reaction flask, reflux for 4h, and drop to After reaching room temperature, the reaction was also poured into water and filtered, the filter cake was washed once with ethanol and recrystallized from toluene to obtain compound P18.

Synthetic example 3

[0110] Synthesis Example 3: Synthesis of Compound P24

[0111] The difference between the synthesis method and Synthesis Example 1 is that 2-chloro-4-phenylquinazoline is replaced by an equivalent amount of 2-chloro-3-(1-naphthyl)quinoxaline to obtain compound P24.

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Abstract

The invention relates to a compound and application thereof. The compound has a structure as shown in a formula I. According to the compound provided by the invention, a large conjugated eight-membered aromatic ring with a specific structure is used as a parent nucleus, the planarity of molecules is improved, the transmission barrier of current carriers is reduced, the compound is matched with aryl or heteroaryl (Ar), the luminous efficiency of an OLED (Organic Light Emitting Diode) device using the compound is improved, the driving voltage is reduced, in addition, the rigidity of the compound molecules is enhanced due to the increase of conjugation, the compound is more stable in structure, and the OLED device using the compound also shows a relatively long service life.

Description

technical field [0001] The invention relates to the technical field of organic electroluminescence, in particular to a compound and its application. 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 photovoltaic cells, 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 it does not need an additional...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D221/18C07D403/04C07D401/14C07D403/10C07D471/06C07D403/14C07D409/14C07D405/14C07D409/04C09K11/06H01L51/54
CPCC07D221/18C07D403/04C07D401/14C07D403/10C07D471/06C07D403/14C07D409/14C07D405/14C07D409/04C09K11/06C09K2211/1029C09K2211/1044C09K2211/1092C09K2211/1088C09K2211/1074H10K85/6576H10K85/6574H10K85/6572
Inventor 李之洋张辉
Owner BEIJING ETERNAL MATERIAL TECH