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Nanometer functionalization surface modification method based on o-dihydroxybenzene derivatives

A surface modification, nano-functional technology, applied in chemical instruments and methods, material electrochemical variables, coatings, etc., to achieve the effect of strong universality, easy industrialization, and mild conditions

Active Publication Date: 2013-12-11
YANTAI LVSHUIFU MEMBRANE MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] However, the existing research and patents use the polydopamine layer to further bond small molecules or macromolecular organic materials on the surface of the material, or generate nanoparticles in situ on the surface of the material, but there is no way to combine various prepared nanoparticles. Related reports about materials fixed on the surface of materials through polydopamine layer modification for surface nano-coating

Method used

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Examples

Experimental program
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Effect test

Embodiment 1-5

[0026] Soak the plastic monolith in 0.2 mmol / L borate buffer solution (pH7.4), then add 3,4-dihydroxyphenylacetic acid at a concentration of 0.05 mg / mL, and add ammonium persulfate (0.5 mg / mL ). Stir or shake the solution continuously for 7 days, take out the single piece, and wash it repeatedly with 50% ethanol aqueous solution to remove unreacted 3,4-dihydroxyphenylacetic acid and unattached poly-3,4-dihydroxyphenylacetic acid. Then the poly-3,4-dihydroxyphenylacetic acid-coated plastic monolithic sheet was soaked in different concentrations of copper nanoparticle solutions (0.001 mMol / L, 1 mMol / L, 100 mMol / L, 500 mMol / L, 1 Mol / L L) After 24 hours (at room temperature), after cleaning the excess saline solution, let the plastic single piece dry naturally, and test the conductivity. The results show that a good conductive layer is formed on the non-conductive plastic monolithic surface after the growth of copper nanoparticles, and plastic electroplating parts can be formed o...

Embodiment 6-9

[0028] Soak the glassy carbon electrode in 1 mmol / L phosphate buffer solution (pH7.0), then add 3,4-dihydroxybenzylamine at a concentration of 100 mg / mL, and add sodium periodate (0.5mg / mL). Stir or shake the solution continuously for 5 minutes, take out the electrode, and wash it repeatedly with 50% ethanol aqueous solution to remove unreacted 3,4-dihydroxybenzylamine and unattached poly-3,4-dihydroxybenzylamine. Then soak the glassy carbon electrode coated with poly-3,4-dihydroxybenzylamine in different concentrations of polyaminopyridine solutions (51 mMol / L, 100 mMol / L, 500 mMol / L, 1 Mol / L) 24 hours (room temperature), followed by treatment to activate the electrode and test the electrochemical behavior of caffeine on the electrode. The results show that the electrode has a good electrocatalytic ability for the electrooxidation reaction of caffeine, and the oxidation peak potential difference increases, so that the motor can achieve a good detection effect.

Embodiment 10

[0030] The forward osmosis membrane was soaked in 10 mmol / L Tris(TRIS) hydrochloric acid buffer solution (pH 8.5), and then 3,4-dihydroxyphenylacetic acid (DOPAC) was added at a concentration of 2 mg / mL. Stir or shake the solution continuously for 1 hour, take out the forward osmosis membrane, and wash it repeatedly with pure water to remove unreacted DOPAC and unattached poly-DOPAC. Then the forward osmosis membrane coated with poly-DOPAC was soaked in the silver nanosol with a concentration of 100 mMol / L for 10 hours (room temperature), and then the excess salt solution was washed. Antibacterial experiments have found that the forward osmosis membrane produced by silver nanoparticles has an antibacterial effect of 100% against various bacteria, including Escherichia coli and streptococcus. The forward osmosis membrane produced by silver nanoparticles has an efficiency of 100% in the attachment and growth inhibition of Escherichia coli.

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Abstract

The invention provides a simple universal nanometer functionalization surface modification method based on o-dihydroxybenzene derivatives. The method comprises that: dopamine is used to perform surface decoration on a basis material for one or more times, then the basis material subjected to surface decoration is subjected to nanometer functionalization decoration for one or more times; and nanometer functional materials such as various organic or inorganic nanometer particles, nanometer wires, nanometer sols, nanometer tubes and the like are fixedly disposed on the surface of the basis material, so that the material surface is improved in hydrophilicity, hydrophobicity, roughness and anti-pollution capability, or the material is enhanced in biocompatibility and performances such as antibiosis, catalysis and the like, or the material is endowed with new conductive, optical, thermodynamical performances and the like and enhanced in mechanical strength.

Description

technical field [0001] The present invention relates to the surface nano-coating technology of organic, inorganic and hybrid materials, especially the surface of separation membranes, electrodes, medical equipment, chemical energy devices, artificial organ materials, biosensor materials, anti-corrosion materials and biological decontamination materials nano-coating technology. Background technique [0002] The surface chemical composition and microstructure of materials directly affect the performance of materials. In order to meet the special needs of materials in the working environment, various surface modification technologies have been proposed, such as shot peening, electroplating, spraying, and vapor deposition (PVD, CVD, etc.). ), laser treatment and surface chemical treatment, etc., have greatly improved the service behavior of the material through the improvement of the surface structure of the material and the change of the chemical composition, so it has been wid...

Claims

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Application Information

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IPC IPC(8): C08J7/06C08J7/04C08G83/00G01N27/30B01D67/00A61L27/00A61L27/06
Inventor 胡云霞徐卫星
Owner YANTAI LVSHUIFU MEMBRANE MATERIAL
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