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Synergistic chemical and photodynamic antibacterial and antiviral coating and preparation method thereof

A photodynamic antibacterial and antiviral technology, applied in botany equipment and methods, coatings, chemicals for biological control, etc., can solve the problems of limited antiviral and antibacterial effects, poor versatility, complicated preparation process, etc. To achieve the effect of blocking the spread of pathogens, limited solution effect and simple method

Active Publication Date: 2021-06-25
CHINA WEST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a synergistic chemical and photodynamic antibacterial and antiviral coating and its preparation method to solve the problems of limited antiviral and antibacterial effects, complicated preparation process and poor versatility in the prior art. question

Method used

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  • Synergistic chemical and photodynamic antibacterial and antiviral coating and preparation method thereof
  • Synergistic chemical and photodynamic antibacterial and antiviral coating and preparation method thereof
  • Synergistic chemical and photodynamic antibacterial and antiviral coating and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0037] A method for preparing a synergistic chemical and photodynamic antibacterial and antiviral coating, comprising the following steps:

[0038] S1. Dissolve 1.5mg copper chloride, 3mg (2,3,9,10,16,17,23,24-octahydroxyphthalocyanine) copper, 6mg dopamine hydrochloride in 60mL water with a volume ratio of 9:1 Mix the solution with N'N-dimethylformamide, stir at room temperature for 10 minutes to form a metal ion-phthalocyanine / dopamine coordination complex, then add tris (Tris), and use hydrochloric acid to adjust the pH of the solution to 10;

[0039] S2, atomize and spray the metal ion-phthalocyanine / dopamine coordination complex solution obtained in S1 onto the surface of the silicon wafer, and irradiate it with a xenon lamp (light intensity 9W·cm －2 ) 1h, with the help of (2,3,9,10,16,17,23,24-octahydroxyphthalocyanine) copper exposed to light to generate active oxygen species, promote the oxidative polymerization of dopamine in the coordination complex to form a film, ...

Embodiment 2

[0041] A method for preparing a synergistic chemical and photodynamic antibacterial and antiviral coating, comprising the following steps:

[0042] S1. Dissolve 2 mg of zinc sulfate, 6 mg (2,3,9,10,16,17,23,24-octahydroxyphthalocyanine) zinc, and 10 mg of dopamine hydrochloride in 40 mL of water with a volume ratio of 6:1. Methyl sulfoxide mixed solution, stirred at room temperature for 20 minutes to form a metal ion-phthalocyanine / dopamine coordination complex, after adding Tris solution, adjust the pH of the solution to 8.5 with hydrochloric acid;

[0043] S2, atomize and spray the metal ion-phthalocyanine / dopamine coordination complex solution obtained in S1 onto the surface of the titanium alloy, and irradiate it with a xenon lamp (light intensity 5W cm －2 ) 3h, with the help of (2,3,9,10,16,17,23,24-octahydroxyphthalocyanine)zinc exposed to light to generate active oxygen species, and promote the oxidative polymerization of dopamine in the coordination complex to form a f...

Embodiment 3

[0045] A method for preparing a synergistic chemical and photodynamic antibacterial and antiviral coating, comprising the following steps:

[0046] S1. Dissolve 3mg of copper nitrate, 20mg of 2,9,16,23-tetrakis(3,4,5-trihydroxybenzamido)zinc phthalocyanine and 24mg of dopamine hydrochloride in 20mL of 1.5:1 volume ratio A mixed solution of water and ethanol was stirred at room temperature for 30 minutes to form a metal ion-phthalocyanine / dopamine coordination complex. After adding tris (Tris), the pH of the solution was adjusted to 7.5 with hydrochloric acid;

[0047] S2. Atomize and spray the metal ion-phthalocyanine / dopamine coordination complex solution obtained in S1 onto the wood surface, and irradiate with sunlight (sunlight intensity > 0.1W·cm －2 ) 8h, with the help of (2,3,9,10,16,17,23,24-octahydroxyphthalocyanine)zinc exposed to light to generate active oxygen species, promote the oxidative polymerization of dopamine in the coordination complex to form a film, the wo...

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Abstract

The preparation method comprises the following steps: S1, dissolving a soluble metal salt, a phthalocyanine compound and dopamine hydrochloride in a mixed solvent, carrying out a reaction to obtain a metal ion-phthalocyanine / dopamine coordination complex, then adding a Tris solution, and adjusting the pH value of the solution to 7.5-10.0 by using diluted acid; S2, atomizing and spraying the reaction liquid to the surface of a base material, irradiating for a period of time by using sunlight or a xenon lamp, alternately washing the surface of the base material with water and ethanol, and performing airing to obtain the product. According to the coordination effect of catechol, copper ions and zinc ions, the adhesion of a dopamine oxidation film to a base material is utilized, active oxygen clusters generated by phthalocyanine under illumination are utilized, surface oxidation self-polymerization of dopamine is promoted, and metal ions with antibacterial and antiviral activity and a phthalocyanine compound with photodynamic antibacterial activity are fixed on the surface of the base material; and the method has universality for most base materials, is simple, is simple and convenient to operate, and solves the problems in the prior art.

Description

technical field [0001] The invention relates to the field of antibacterial and antiviral technology, in particular to a synergistic chemical and photodynamic antibacterial and antiviral coating and a preparation method thereof. Background technique [0002] Exposure to pathogenic contaminants is one of the main causes of infectious disease epidemics. Bacterial infections, such as plague, cholera, etc., not only spread quickly, but also have a high mortality rate. For a long time, in order to deal with bacterial infection and prevent the surface of materials, especially medical devices, from being contaminated by bacteria, researchers have developed a variety of antifouling and antibacterial coatings, mainly including physical structure antibacterial and antifouling, antibacterial agents (mainly antibiotics) impregnated Or chemical bonding modification, etc. In practical application, it is difficult to construct the physical structure; the excessive use of antibiotics in tr...

Claims

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Application Information

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IPC IPC(8): A61L15/18A61L15/20A61L15/44A61L15/46A61L31/08A61L31/16A01N43/90A01N59/20A01N59/16A01P3/00A01P1/00
CPCA61L15/18A61L15/20A61L15/44A61L15/46A61L31/088A61L31/08A61L31/16A01N43/90A01N59/20A01N59/16A61L2300/404A61L2300/408A61L2300/412A61L2300/602A61L2300/102A61L2300/216A61L2300/606
Inventor 常金明钟琴官小玉廖运文高和军徐洲付洪权
Owner CHINA WEST NORMAL UNIVERSITY
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