Polycyclic aromatic compound and application of polycyclic aromatic compound in electroluminescent device

A polycyclic aromatic compound technology, used in triarylamine series derivatives, organic electroluminescent devices, can solve problems such as less luminescent materials, and achieve narrow half-peak width, high luminous efficiency, and reduced recombination energy. Effect

CN113943290APending Publication Date: 2022-01-18TSINGHUA UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2022-01-18

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Abstract

The invention relates to a polycyclic aromatic compound, in particular to a triarylamine series derivative with a bridging structure and application of the triarylamine series derivative. The compound has a structure as shown in a formula I or a formula II. When the compound is used as a luminescent layer material in an organic electroluminescent device, the luminescent efficiency of the device can be effectively improved, the spectral color purity of the device is improved, and the optimal technical effect that the luminescent half-peak width of the device is narrow is achieved.
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Description

technical field

[0001] The invention relates to a polycyclic aromatic compound, in particular to a triarylamine series derivative with a bridging structure and its application, in particular to the application of this type of compound in an organic electroluminescent device. Background technique

[0002] In recent decades, the field of organic light-emitting diodes (Organic Light-Emitting Diodes, OLEDs) has made rapid progress and has become one of the most promising technologies for full-color display and lighting applications. Compared with traditional inorganic light-emitting materials, organic light-emitting materials are more flexible in molecular design, and can regulate various performance indicators such as thermal stability, luminescence characteristics, and electrical conductivity characteristics of molecules through modification and transformation of molecular structures. At the same time, many Organic materials also have high luminous quantum efficiencies. In te...

Examples

Embodiment approach

[0108] The specific preparation methods of the above-mentioned novel compounds of the present invention will be described in detail below by taking a number of synthesis examples as examples, but the preparation methods of the present invention are not limited to these synthesis examples.

[0109] The compounds of the synthetic methods not mentioned in the examples of the present invention are all raw material products obtained through commercial channels. Solvents and reagents used in the present invention, such as ethyl acetate, toluene, sodium carbonate and other chemical reagents, can be purchased from the domestic chemical product market, such as purchased from Sinopharm Group Reagent Company, TCI Company, Shanghai Bi De Pharmaceutical Company, Bailingwei Reagent company etc. In addition, those skilled in the art can also synthesize by known methods.

[0110] Compound Synthesis Example

[0111] Representative synthetic route 1:

[0112] This representative synthetic ...