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Organic blue OLED fused ring compound, preparation method and organic electroluminescent device thereof

A technology of organic electronic devices and compounds, which is applied in the field of organic electroluminescent devices and organic blue OLED fused ring compounds, can solve the problems of high driving voltage, short service life, poor stability, etc., and achieve protection conjugation and not easy to aggregate , The effect of molecular stabilization

Inactive Publication Date: 2019-08-02
HEBEI DELONGTAI CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides an organic blue light OLED fused ring compound, a preparation method and an organic electroluminescence device thereof, so as to solve the problems of poor stability of the existing blue fluorescent materials, which lead to high driving voltage, low efficiency and long service life of the device short technical question

Method used

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  • Organic blue OLED fused ring compound, preparation method and organic electroluminescent device thereof
  • Organic blue OLED fused ring compound, preparation method and organic electroluminescent device thereof
  • Organic blue OLED fused ring compound, preparation method and organic electroluminescent device thereof

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preparation example Construction

[0063] The preparation method of formula (1) of the present invention includes the following steps:

[0064]

[0065] Among them, Ar 1 , Ar 2 , R 1 , R 2 , R 3 , R 4 , A is defined as above.

preparation Embodiment 1

[0066] Preparation Example 1: Preparation of formula (1a)

[0067]

[0068] The synthesis of intermediate (1a-1): Add 320ml of dioxane solvent, 35ml of water into a three-necked flask, and then add 0.1mol of 4-isopropylaniline and 0.1mol of 4-bromo-6-phenylbis Benzofuran, 0.25mol potassium carbonate, 0.001mol ferrocene palladium dichloride, stirred and heated to reflux, 4h later, the reaction of the raw materials was detected to be completed, the reaction solution was spin-dried under reduced pressure, and 0.07mol intermediate was obtained by column chromatography 1a-1 (70% yield).

[0069] Synthesis of intermediate (1a-2): Add 1000ml of dioxane, 2.2mol of 1-pyrrole-1-cyclohexene, and 1mol of 2,3-bis(bromomethyl)naphthalene into a three-necked flask and heat to reflux After 18h, add 2000ml water and continue heating for 2h. It is detected that the reaction of the raw materials is complete. The reaction solution is spin-dried under reduced pressure and treated with ether, 5% HCL an...

preparation Embodiment 2

[0074] Preparation Example 2: Preparation of formula (1i)

[0075]

[0076] Synthesis of intermediate (1i-1): The synthesis method is the same as that of intermediate 1a-1 to obtain intermediate 1i-1 (yield 70%).

[0077] Synthesis of compound 1i: The synthesis method is the same as that of intermediate 1a to obtain compound 1i (yield 77%).

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Abstract

The invention provides an organic blue OLED fused ring compound, a preparation method and an organic electroluminescent device thereof, and belongs to the technical field of organic semiconductors. The organic blue OLED fused ring compound adopts a structure shown as a formula (1).

Description

Technical field [0001] The invention relates to the technical field of organic semiconductors, in particular to an organic blue OLED condensed ring compound, a preparation method and an organic electroluminescent device. Background technique [0002] Organic electroluminescence is the use of organic substances to convert electrical energy into light energy. Organic light-emitting elements generally include a structure of anode and cathode and an organic layer between them. The organic layer generally consists of a hole injection layer, a hole transport layer, an electron blocking layer, The light-emitting layer, the hole blocking layer, the electron transport layer, and the electron injection layer are composed. When a voltage is applied to the anode and the cathode, holes are injected into the light-emitting layer from the anode side, and electrons are injected into the light-emitting layer from the cathode side. The injected holes and electrons The light-emitting layer combines...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D307/91C07D405/14C07F7/08C09K11/06H01L51/50H01L51/54
CPCC07D307/91C07D405/14C07F7/081C09K11/06C09K2211/1007C09K2211/1011C09K2211/1014C09K2211/1029C09K2211/1088H10K85/624H10K85/626H10K85/615H10K85/6574H10K85/6572H10K85/40H10K50/11
Inventor 寇可雨刘保军吕瑶贾学艺
Owner HEBEI DELONGTAI CHEM
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