Nitrogenous heterocyclic compound, application thereof, and organic electroluminescence devices
A nitrogen heterocyclic compound and heteroaryl technology, applied in the field of organic electroluminescent materials, can solve problems such as affecting the emission efficiency, and achieve the effects of improving the luminous efficiency, facilitating the transmission of electrons, and reducing the driving voltage.
Active Publication Date: 2019-10-18
BEIJING ETERNAL MATERIAL TECH
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Otherwise, the energy of the excitons will be transferred to the host material and thus affect the emission efficiency
Method used
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[0015] Specific embodiments of the present disclosure will be described in detail below. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure, but not to limit the present disclosure.
[0016] A first aspect of the present disclosure provides a nitrogen-containing heterocyclic compound having a structure represented by the following general formula (1):
[0017]
[0018] where R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 3’ , R 4’ , R 5’ , R 6’ and R 7’ each independently selected from hydrogen, C 1 ~C 10 Alkyl, C 1 ~C 10 Alkoxy, C 1 ~C 10 At least one of silyl group, halogen group, cyano group and group represented by formula (2), and R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 3’ , R 4’ , R 5’ , R 6’ and R 7’ not hydrogen at the same time;
[0019]
[0020] Wherein, * is the linking site; L is selected from single bond, substituted or unsubstituted C 6 ~C 30 ...
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Abstract
The invention relates to a nitrogenous heterocyclic compound. The nitrogenous heterocyclic compound has the structure shown in the following general formula (1): in the nitrogenous heterocyclic compound, a parent nucleus structure contains two N atoms, thus the nitrogenous heterocyclic compound has the characteristic of electron deficiency, the nitrogenous heterocyclic compound has a rigid plane structure and a large pi conjugate system, electronic transmission is facilitated, the nitrogenous heterocyclic compound can serve as a high-mobility organic semiconductor material to be applied to thefield of organic photoelectricity, and thus the driving voltage of electroluminescence devices can be reduced, and the luminescence efficiency is improved. The nitrogenous heterocyclic compound is wide in application range, when a parent nucleus is connected with an electron-donating group, the peak value of an emission peak of the nitrogenous heterocyclic compound is within a green light range,and the nitrogenous heterocyclic compound can serve as a green phosphorescence main body to be applied to the organic electroluminescence devices; and when the parent nucleus is connected with an electron-withdrawing group, the electron affinity of the nitrogenous heterocyclic compound is increased, and thus the produced compound more facilitates transmission of electrons, and can serve as an electron transmission material to be applied to the organic electroluminescence devices.
Description
technical field [0001] The present disclosure relates to the field of organic electroluminescent materials, in particular, to a nitrogen-containing heterocyclic compound and its application and organic electroluminescent device. Background technique [0002] With the continuous advancement of OLED technology in the two fields of lighting and display, people pay more attention to the research of high-efficiency organic materials that affect the performance of OLED devices. An organic electroluminescent device with good efficiency and long life is usually the device structure and various organic materials. The result of the optimized collocation. In the most common OLED device structure, it usually includes the following types of organic materials: hole injection materials, hole transport materials, electron transport materials, as well as various luminescent materials (dyes or doped guest materials) and corresponding host materials, etc. . [0003] The luminescent material ...
Claims
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Login to View More IPC IPC(8): C07D471/22C07F7/08C07D519/00C09K11/06H01L51/50H01L51/54
CPCC07D471/22C07D519/00C09K11/06C09K2211/1007C09K2211/1011C09K2211/1014C09K2211/1029C09K2211/1033C09K2211/1044C09K2211/1048C09K2211/1059C09K2211/1088C09K2211/1092C07F7/0805H10K85/622H10K85/624H10K85/626H10K85/615H10K85/631H10K85/654H10K85/6576H10K85/6574H10K85/657H10K85/40H10K85/6572H10K50/12H10K50/16
Inventor 张亚光范洪涛杜倩任雪艳
Owner BEIJING ETERNAL MATERIAL TECH