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Organic phosphorescent material, preparation method thereof and anti-counterfeiting ink

An anti-counterfeiting ink and organic phosphorus technology, applied in the field of phosphorescent materials, can solve the problems of complex synthesis of phosphorescent materials and unstable phosphorescence, and achieve the effects of excellent phosphorescence performance, stable phosphorescence performance and excellent crystallinity

Inactive Publication Date: 2021-01-12
WENZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The first purpose of the present invention is to provide organic phosphorescent materials to solve the technical problems of complex synthesis of phosphorescent materials and unstable phosphorescence in the prior art

Method used

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  • Organic phosphorescent material, preparation method thereof and anti-counterfeiting ink
  • Organic phosphorescent material, preparation method thereof and anti-counterfeiting ink
  • Organic phosphorescent material, preparation method thereof and anti-counterfeiting ink

Examples

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preparation example Construction

[0074] The present invention also provides a method for preparing the above-mentioned organic phosphorescent material, comprising the following steps:

[0075] When X and Y are different, compound B and compound and compounds Carry out Suzuki coupling reaction to obtain compound A;

[0076] Alternatively, when X and Y are the same, compound B and compound Carry out Suzuki coupling reaction to obtain compound A;

[0077] Wherein, the structural formula of compound B is

[0078] In a specific embodiment of the present invention, the preparation method of compound B may include: bromination reaction of 2,6-dimethylpyrone, and the bromination agent used in the bromination reaction may be NBS. The conditions of the bromination reaction are conventional bromination reaction conditions.

[0079] In a particular embodiment of the invention, the conditions of the Suzuki coupling reaction include: in Pd(PPh 3 ) 4 Under the action of a base and a base, the reaction raw materi...

Embodiment 1

[0100] This embodiment provides an organic phosphorescent material whose structural formula is as follows:

[0101]

[0102] Organic phosphorescent material A 1 The synthetic route of is as follows:

[0103]

[0104] The specific preparation method may include the following steps:

[0105] (1) At room temperature, 2,6-dimethylpyrone was brominated with NBS to obtain compound B;

[0106] (2) Then take 10mmol of compound B and 24mmol of 5% Pd(PPh 3 ) 4 , K of 10% of the mass of compound B 2 CO 3 , 20mL of THF and 2mL of water, mixed in a nitrogen atmosphere and reacted at 80°C for 12h, after the reaction, separated by column chromatography to obtain compound A 1 .

Embodiment 2

[0108] This embodiment provides an organic phosphorescent material whose structural formula is as follows:

[0109]

[0110] Organic phosphorescent material A 2 The synthetic route of is as follows:

[0111]

[0112] The specific preparation method is with reference to Example 1, the difference is only that replace with

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Abstract

The invention relates to the technical field of phosphorescent materials, in particular to an organic phosphorescent material, a preparation method thereof and anti-counterfeiting ink. The organic phosphorescent material has a structural general formula shown in the specification, and X and Y are independently selected from any one of H and halogen. The organic phosphorescent material has the advantages of small molecular weight, symmetrical molecular configuration, excellent crystallinity and excellent phosphorescent performance, and can be used for anti-counterfeiting ink, anti-counterfeiting treatment of articles and the like.

Description

technical field [0001] The invention relates to the technical field of phosphorescent materials, in particular to an organic phosphorescent material, a preparation method thereof and anti-counterfeiting ink. Background technique [0002] Phosphorescent materials will have a period of afterglow visible to the naked eye ranging from tens of microseconds to tens of minutes after the excitation source is removed, so compared with common fluorescent materials, they have great advantages in anti-interference, so they are used Widely used in biological imaging, devices, encryption anti-counterfeiting and other fields. [0003] However, the synthesis of existing phosphorescent materials is complex and costly. And most phosphorescent materials can only emit light when they are crystallized well, and the phosphorescence will disappear in powder or amorphous state. Therefore, the practical application of phosphorescent materials is greatly limited. Therefore, it is necessary to deve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D309/38C09K11/06C09D11/50C09D11/17C09D11/037B41M5/00
CPCC07D309/38C09K11/06C09D11/50C09D11/17C09D11/037B41M5/0023C09K2211/1088
Inventor 雷云祥王梦竹黄小波刘妙昌吴华悦
Owner WENZHOU UNIVERSITY