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Conduction cavity type electroluminescent material and preparation method and application thereof

An electroluminescent material and hole-type technology, applied in the direction of luminescent materials, chemical instruments and methods, semiconductor/solid-state device manufacturing, etc., can solve the problem of film formation, thermal stability, low solubility, and poor carrier transport performance , high blue light energy, etc., to achieve unique optical and optoelectronic properties, enhanced fluorescence emission intensity, and large atomic radius

Inactive Publication Date: 2014-11-05
OCEANS KING LIGHTING SCI&TECH CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high energy and wide band gap of blue light, the efficiency and stability are not as good as green and red light materials, and the carrier transport performance of the material is also poor.
Anthracene single crystal is the earliest blue organic electroluminescence material used, but the device is unstable due to its easy crystallization, and the material has low film-forming property, thermal stability and solubility

Method used

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  • Conduction cavity type electroluminescent material and preparation method and application thereof
  • Conduction cavity type electroluminescent material and preparation method and application thereof
  • Conduction cavity type electroluminescent material and preparation method and application thereof

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preparation example Construction

[0037] The embodiment of the present invention also provides the preparation method of the above-mentioned conductive hole-type electroluminescent material, please refer to figure 2 , the preparation method of the conduction hole type electroluminescent material comprises the following steps:

[0038] S1: Provide compounds A and B represented by the following structural formula respectively,

[0039]

[0040] Among them, X is Br or I; D is an electron-donating group; R is C1 ~C 12 straight-chain or branched-chain alkyl groups;

[0041] S2: In an oxygen-free environment and in the presence of an organometallic catalyst system and an organic solvent, the compounds A and B are subjected to a Suzuki coupling reaction to obtain a conductive hole-type electroluminescent material represented by the following structural general formula (I), The Suzuki coupling reaction formula of this step S2 can be expressed as follows:

[0042]

[0043] Specifically, in the step S1 of the ...

Embodiment 1

[0077] The conductive hole-type electroluminescent material 2,7,12-tris(5-(10-n-hexylanthracene-9-yl)selenophen-2-yl)-5,5',10,10' , the preparation of 15,15'-hexaethyltripolyindene (HSTET), its structural formula is as follows I 1 Shown:

[0078]

[0079] Its preparation steps are as follows:

[0080] 1) The preparation of compound 2,7,12-tribromo-5,5′,10,10′,15,15′-hexaethyltripolyindene, the specific preparation steps are as follows:

[0081] 1.1) The preparation of compound tripolyindene, its chemical reaction formula is as follows:

[0082]

[0083] The specific preparation process is as follows: 10 mmol of 1-indanone is added to a mixed solution containing 8 mL of acetic acid and 4 mL of concentrated hydrochloric acid, heated to 100° C., stirred and refluxed for 20 h. After the reaction, the reaction solution was poured into a beaker filled with ice water, and a large amount of solid precipitated immediately. After the precipitate was washed with water, acetone ...

Embodiment 2

[0108] The conductive hole-type electroluminescent material 2,7,12-tris(5-(10-n-hexyloxyanthracene-9-yl)selenophen-2-yl)-5,5′,10,10 Preparation of ',15,15'-hexaethyltripolyindene (HOSTET), whose structural formula is as follows I 2 Shown:

[0109]

[0110] Its preparation steps are as follows:

[0111] 1) Preparation of compound 2,7,12-tribromo-5,5′,10,10′,15,15′-hexaethyltripolyindene: please refer to step (1) in Example 1 for its preparation method .

[0112] 2) Preparation of compound 2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolane)-5-(10-n-hexyloxyanthracene-9-yl)selenophene , and its chemical reaction formula is as follows:

[0113]

[0114]2.1) Preparation of compound 10-n-hexyloxy-9-bromoanthracene: Dissolve 15mmol of 10-n-hexyloxyanthracene in 25mL of dichloromethane, and dissolve 16mmol of NBS in 15mL of dichloromethane. Slowly drop the dichloromethane solution of 10-n-hexyloxyanthracene into the reaction flask, drop into 1ml of glacial acetic acid, and react in...

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Abstract

The invention discloses a conduction cavity type electroluminescent material and a preparation method and an application thereof. A molecular structure general formula of the conduction cavity type electroluminescent material is shown as the following formula (I), wherein D is an electron-donating group, and R is a C1-C12 linear chain or alkyl with a branched chain. The conduction cavity type electroluminescent material is prepared by the copolymerization of an anthracene structural unit, a selenophen structural unit and a truxene structural unit, so that the conduction cavity type electroluminescent material is stable in structure and excellent in thermal stability and cavity transmission performance, enhances fluorescence emission, and has great application prospect in the field of photoelectricity. The conduction cavity type electroluminescent material is simple in preparation technology and easy to operate and control, reduces the production cost, and is suitable for industrial production.

Description

technical field [0001] The invention belongs to the technical field of organic compound synthesis, and in particular relates to a hole-conducting electroluminescent material and its preparation method and application. Background technique [0002] With the development of the information age, organic light emitting diodes (OLEDs) with high efficiency, energy saving and light weight and large-area white light illumination have attracted more and more attention. As a new type of LED technology, organic electroluminescent devices, which have the characteristics of self-luminescence, simple structure, fast response speed, and can be made into flexible devices, have put forward higher requirements for materials. [0003] In 1987, Tang and VanSlyke of Eastman Kodak Company in the United States reported a breakthrough in the research of organic electroluminescence. In order to achieve full-color display and lighting applications, blue light is essential among the three primary colo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/06H01L51/00H01L51/42H01L51/46H01S5/36H10K99/00
CPCH01L51/0056H01L51/0058Y02E10/549Y02P70/50H10K85/624H10K85/626
Inventor 周明杰王平梁禄生张娟娟
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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