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Amine-rich catecholamine compound, preparation method thereof, amine-rich surface-modified product, material and dip coating method of material

A technology of amine-rich catecholamines and catecholamines, which is applied in the field of materials science, can solve the problems of functional changes and poor chemical stability of coatings, and achieve the effect of not easy to deteriorate and damage, simple method and good adhesion performance

Active Publication Date: 2019-07-16
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention provides a catecholamine-based amine-rich surface modification product, which aims to improve the existing catecholamine coatings, such as polydopamine coatings, which have poor chemical stability and are difficult to make further functional changes to the coating, and at the same time endow Good adhesion properties of the coating

Method used

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  • Amine-rich catecholamine compound, preparation method thereof, amine-rich surface-modified product, material and dip coating method of material
  • Amine-rich catecholamine compound, preparation method thereof, amine-rich surface-modified product, material and dip coating method of material
  • Amine-rich catecholamine compound, preparation method thereof, amine-rich surface-modified product, material and dip coating method of material

Examples

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preparation example Construction

[0030] A method for preparing an amino-rich catecholamine compound, comprising:

[0031] The carboxyl-containing plant polyphenolic compound and the amino-rich molecule are placed in an acidic buffer solution to react completely, and then dialyzed and freeze-dried to obtain the amino-rich catecholamine compound. The molar ratio of the amine groups in the amine group molecule is 0.01-10:1, and the concentration of the carboxyl group-containing plant polyphenol compound in the acid buffer solution is 0.01-100 mg / ml.

[0032] Preferably, in order to ensure that the raw materials participating in the reaction are not too wasteful, the molar ratio of the carboxyl groups in the carboxyl-containing plant polyphenol compounds participating in the reaction to the amine groups in the amine-rich molecules participating in the reaction is 0.14-0.33:1.

[0033] Preferably, in order to make the carboxyl group in the carboxyl group-containing plant polyphenol compound react more efficiently ...

Embodiment 1

[0062] This embodiment provides an amine-rich catecholamine compound and its preparation method, a catecholamine-based amine-rich surface modification product, a material and a dip coating method thereof.

[0063] A method for preparing amino-rich catecholamine compounds: adding hydrocaffeic acid and polyallylamine to MES buffer solution with a molar ratio of carboxyl and amine groups of 0.2:1 to react for 12 hours to obtain a mixed solution, and placing the mixed solution in The dialysis bag was dialyzed 6 times for 3 hours each time, and then the solution obtained by the dialysis was freeze-dried to obtain the amino-rich catecholamine compound provided in this example.

[0064] A catecholamine-based amine-rich surface modification product, which comprises two components: PBS buffer and amine-rich catecholamine compound, the ratio of the amount of amine-rich catecholamine compound to PBS buffer is 1mg: 1mL. The amino-rich catecholamine compound is obtained by reacting hydroca...

Embodiment 2

[0069] This example is basically the same as Example 1, except that the carboxyl-containing plant polyphenol compound is tannic acid, and the alkaline buffer solution is Tris-HCl.

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Abstract

The invention relates to the technical field of materials, and provides an amine-rich catecholamine compound and a preparation method thereof. The amine-rich catecholamine compound is prepared by thereaction of a carboxyl-containing plant polyphenol compound and an amine-rich molecule. The invention also provided a catecholamine-based amine-rich surface-modified product, including an alkaline buffer solution and the amine-rich catecholamine compound, and the ratio of the amine-rich catecholamine compound to the alkaline buffer solution is 0.01-100 mg: 1 mL. The amine-rich catecholamine compound is prepared by the reaction of the carboxyl-containing plant polyphenol compound and the amine-rich molecule. A coating formed by the surface-modified product has good wide-spectrum adhesion properties and stable chemical properties under strong acid and strong base conditions, and the surface-modified product can further react with various functional compounds to impart new properties to the coating. A material with the coating on the surface of the material and a method of dip-coating the catecholamine-based amine-rich coating on the surface of the material are also provided.

Description

technical field [0001] The invention relates to the technical field of materials science, in particular, to an amino-rich catecholamine compound and a preparation method thereof, an amino-rich surface modified product, a material and a dip coating method thereof. Background technique [0002] At present, for many fields such as modern chemistry, medicine, biology, and material science, chemical modification methods on the surface of different materials play a very important role in enhancing their functions. There are many existing methods for functional modification of the material surface, such as self-assembled monolayer, functionalized silane (such as silane coupling agent), LB (Langmuir-Blodgett) ultra-thin molecular film deposition, layer-by-layer self-assembly, Molecular glue technology and genetic engineering surface binding peptides, etc. These methods are widely used in research, but there are limitations in their widespread use, such as the requirement for chemic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B37/08C08F8/10C08F126/02C08G69/48C09D177/04C09D105/08C09D139/02C09D139/00
CPCC08B37/003C08F8/10C08G69/48C09D105/08C09D139/00C09D139/02C09D177/04C08F126/02
Inventor 杨志禄乔峰黄楠涂秋芬夏俊秋邱华高鹏
Owner SOUTHWEST JIAOTONG UNIV
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