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Organic light-emitting material and application of organic light-emitting material to preparation of organic electroluminescence device

A luminescent material and organic technology, applied in luminescent materials, electrical solid devices, electrical components, etc., can solve problems such as barriers to electron injection, unbalanced charge transfer, and weakened electron-absorbing performance, so as to achieve a balance of charges and improve Injection and transport ability, life-enhancing effect

Inactive Publication Date: 2019-12-03
BEIJING ETERNAL MATERIAL TECH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the prior art, for example, Chinese patent CN103732590A discloses a benzocarbazolidine-quinoline compound suitable for organic electroluminescent devices, but the charge-absorbing segment of the compound is a quinoline structure, and diphenyl The connection of heterocyclic fragments and quinoline fragments will weaken the overall electron-withdrawing performance, resulting in the imbalance of charge transport in the molecular structure, resulting in a decrease in the luminous efficiency of the material in the device; at the same time, this type of material is due to the absorption The electrical properties are weak, and its LUMO value is shallow, which leads to barriers to electron injection, which is manifested by the high voltage of the device

Method used

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  • Organic light-emitting material and application of organic light-emitting material to preparation of organic electroluminescence device
  • Organic light-emitting material and application of organic light-emitting material to preparation of organic electroluminescence device
  • Organic light-emitting material and application of organic light-emitting material to preparation of organic electroluminescence device

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Embodiment Construction

[0040] Synthetic example

[0041] The synthetic route of benzocarbazole derivative described in the present invention is as follows:

[0042]

[0043] Based on the above synthesis equation, in the synthesis process of the different benzocarbazole derivatives of the present invention, it is only necessary to replace different benzocarbazole derivatives according to the structural characteristics of the target product. Different target compounds can be obtained by performing synthesis. And it should be noted that the buchwald hartwig coupling reaction is used in the above synthesis method, but it is not limited to this coupling method, and other suitable methods in the prior art can also be selected according to the structure of the target product. The following synthesis examples illustrate the synthesis process by taking part of the target compounds as representatives.

[0044] Synthesis of Synthetic Example 1 Compound A1

[0045]

[0046] In the reaction flask, add ...

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Abstract

The invention relates to a novel organic compound, in particular to an organic light-emitting material, and further discloses a preparation method of the organic light-emitting material and an application to preparation of an organic electroluminescence device. The organic light-emitting material has a parent structure of benzocarbazole or azabenzocarbazole with the polycyclic conjugate characteristic, has high interatomic bond energy and good heat stability and is favorable for solid accumulation between molecules, and the service life of the material is prolonged when the organic light-emitting material is used as a luminescent layer material.

Description

technical field [0001] The invention relates to a novel organic compound, in particular to an organic luminescent material, and further discloses its preparation method and application for preparing an organic electroluminescence device. Background technique [0002] Electroluminescence (EL) refers to the phenomenon that luminescent materials emit light under the action of an electric field and are excited by current and electric field. It is a luminescence process that directly converts electrical energy into light energy. 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 requires a backlight source, has a large viewing angle and low power, and its response speed can reach 1000 times that of a liquid crystal display,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D403/04C07D403/10C07D401/14C07D471/04C07D519/00C07D401/10C07D209/80C07D209/86C07D401/04C07D401/12C07D405/14C07D487/04C07D471/22C07D471/14C09K11/06H01L51/50H01L51/54
CPCC07D403/04C07D403/10C07D401/14C07D471/04C07D519/00C07D401/10C07D209/80C07D209/86C07D401/04C07D401/12C07D405/14C07D487/04C07D471/22C07D471/14C09K11/06C09K2211/1007C09K2211/1011C09K2211/1014C09K2211/1029C09K2211/1044C09K2211/1059C09K2211/1088C09K2211/1092H10K85/622H10K85/624H10K85/633H10K85/636H10K85/615H10K85/654H10K85/6576H10K85/6574H10K85/6572H10K50/11
Inventor 邢其锋黄鑫鑫邵爽
Owner BEIJING ETERNAL MATERIAL TECH
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