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Organic compound, preparation method thereof and electron transport material

A technology of organic compounds and production methods, which is applied in the field of electron transport materials, organic compounds and their production, can solve the problems of reduced electron transport rate, luminous efficiency and lifespan of devices, so as to increase glass transition temperature and improve thermal stability , Improve the display effect

Pending Publication Date: 2021-12-07
WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When the electroluminescent device is in operation, the Joule heat generated will cause bathophenanthroline (BPhen), bathocuproine (BCP) and 1,3,5-tris[(3-pyridyl)-3-phenyl]benzene ( The degradation of TmPyPB) molecules or the change of molecular structure will lead to the decrease of the electron transport rate of the device, and the serious decline of luminous efficiency and lifespan.

Method used

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  • Organic compound, preparation method thereof and electron transport material
  • Organic compound, preparation method thereof and electron transport material
  • Organic compound, preparation method thereof and electron transport material

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Embodiment Construction

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention. In addition, it should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention. In the present invention, unless stated to the contrary, the used orientation words such as "up" and "down" usually refer to up and down in the actual use or working state of the device, specifically the direction of the drawing in the drawings ; while "inside" and "outs...

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Abstract

The embodiment of the invention discloses an organic compound, a preparation method thereof and an electron transport material. The organic compound has the following molecular structural formula: the organic compound comprises at least one substituent group of R1, R2, R3 and R4, and R1, R2, R3 and R4 are electron withdrawing groups. According to the embodiment of the invention, a spirocyclic phosphoryl structure is taken as a core, and is matched with a non-planar configuration of an electron withdrawing group and an organic compound intramolecular group, so that the amorphous performance of the electron transport material is enhanced, the thermal stability is improved, and the glass-transition temperature is increased, and the electron transport material has a relatively deep HOMO energy level and LUMO energy level; the thermal stability and luminous efficiency of the organic light-emitting device are improved, and the display effect is improved.

Description

technical field [0001] The invention relates to the field of display, in particular to an organic compound, a preparation method thereof, and an electron transport material. Background technique [0002] At present, more electron transport materials are used in electroluminescent devices, such as bathophenanthroline (BPhen), bathocuproine (BCP) and 1,3,5-tris[(3-pyridyl)-3-phenyl ]Benzene (TmPyPB) has a low glass transition temperature, generally less than 85°C. When the electroluminescent device is in operation, the Joule heat generated will cause bathophenanthroline (BPhen), bathocuproine (BCP) and 1,3,5-tris[(3-pyridyl)-3-phenyl]benzene ( The degradation of TmPyPB) molecules or the change of molecular structure will lead to the reduction of the electron transport rate of the device, and the serious decline of luminous efficiency and lifetime. [0003] Therefore, there is an urgent need for an organic compound, its preparation method, and electron transport material to s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F9/6568H01L51/50H01L51/54
CPCC07F9/65685H10K85/654H10K85/657H10K50/16
Inventor 汪奎
Owner WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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