Compound and application thereof

Abstract

The invention protects a compound and application thereof. The compound is represented by the following formula (1) as shown in the specification, wherein A<1>-A<8> are same or different and are independently selected from one of the following formula (1-1) or formula (1-2) as shown in the specification or the following groups: hydrogen, deuterium, substituted or unsubstituted C1-C10 alkyl, substituted or unsubstituted C1-C10 cycloalkyl, substituted or unsubstituted C1-C10 alkoxy, substituted or unsubstituted C6-C30 aryl, substituted or unsubstituted C3-C30 heteroaryl, and besides at least twoof the A<1>-A<8> are selected from the formula (1-1) or the formula (1-2) as shown in the specification. L<1> and L<2> are each independently selected from one of a single bond, substituted or unsubstituted C6-C30 arylene, and substituted or unsubstituted C3-C30 heteroarylene; and Ar<1> and Ar<2> are independently selected from one of substituted or unsubstituted C3-C30 heteroaryl. When being used as an electron transport material in an OLED device, the compound exhibits excellent device performance and stability. The invention also protects organic electroluminescent devices using the compound of the general formula.

Description

technical field [0001] The invention relates to an organic compound, which can be used as an electron transport layer material of an organic electroluminescent device; the invention also relates to the application of the compound in the organic electroluminescent device. Background technique [0002] At present, with the continuous advancement of OLED technology in the two major fields of display and lighting, people pay more attention to the research of its core materials. As core materials, common functional organic materials include: hole injection materials, hole transport materials, hole blocking materials, electron injection materials, electron transport materials, electron blocking materials, and luminescent host materials and luminescent objects (dye). [0003] Various types of electron transport materials with strong transport capacity and high stability have been reported in previous articles and patents. Generally speaking, electron-transporting materials are com...

AI Technical Summary

Problems solved by technology

Generally speaking, electron-transporting materials are compounds with electron-deficient nitrogen-containing heterocyclic groups. Most of them have high electron affinity, so they have a strong ability to accept electrons. , common electron transport materials such as AlQ 3 The electron mobility of (octahydroxyquinoline aluminum) is much lower than the hole mobility of the hole transport material, so in the OLED device, on the one hand, it will cause the gap between the holes and electrons caused by the unbalanced injection and transport of carriers. The recombination probability of the device is reduced, thereby reducing the luminous efficiency of the device. On the other hand, the electron transport material with lower electron mobility will lead to an increase in the operating voltage of the device, thereby affecting the power efficiency, which is not good for energy saving.

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