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Green light-induced controlled hydrophilic/hydrophobic smart surface materials and their preparation methods and applications

A surface material and hydrophilic technology, applied in the field of light-sensitive materials, can solve the problems of bleaching of light-sensitive molecules on the surface of materials, limiting materials, etc., and achieve the effect of expanding the potential of applications

Active Publication Date: 2021-02-26
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a hydrophilic / hydrophobic smart surface induced and controlled by green light in order to solve the problem that the use of ultraviolet light in the prior art limits the application of materials in the biological field and causes the bleaching of light-sensitive molecules on the surface of materials Materials and their preparation methods and applications

Method used

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  • Green light-induced controlled hydrophilic/hydrophobic smart surface materials and their preparation methods and applications
  • Green light-induced controlled hydrophilic/hydrophobic smart surface materials and their preparation methods and applications
  • Green light-induced controlled hydrophilic/hydrophobic smart surface materials and their preparation methods and applications

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Embodiment 1

[0038] A preferred embodiment of the present invention provides a method for preparing a hydrophilic / hydrophobic smart surface material induced and controlled by green light. The specific preparation steps are as follows:

[0039]Using N-methylpyrrolidone as the solvent and polycaprolactone with a concentration of 10wt% as the substrate, the nanofiber substrate was prepared by electrospinning. The electrospinning voltage was 15kV, the receiving plate distance was 16cm, and the injection speed was is 15mL / h; the dopamine is polymerized and coated on the surface of the nanofiber substrate, and a dopamine solution is first prepared, using tris buffer (tris buffer, pH=8.5) as a solvent, and the dopamine concentration is 5mg / mL, and then In turn, add copper sulfate pentahydrate at a concentration of 0.5 mg / mL and hydrogen peroxide at a concentration of 0.5 mg / mL to the dopamine solution at a mass ratio of 1:1. The mass ratio of dopamine to copper sulfate pentahydrate is 10:1. The c...

Embodiment 2

[0042] A preferred embodiment of the present invention provides a method for preparing a hydrophilic / hydrophobic smart surface material induced and controlled by green light. The specific preparation steps are as follows:

[0043] Using N-methylpyrrolidone as the solvent and polycaprolactone with a concentration of 12wt% as the substrate, the nanofiber substrate was prepared by electrospinning. The electrospinning voltage was 15kV, the receiving plate distance was 16cm, and the injection speed was is 15mL / h; the dopamine is polymerized and coated on the surface of the nanofiber substrate, and a dopamine solution is first prepared, using tris buffer (tris buffer, pH=8.5) as a solvent, and the dopamine concentration is 5mg / mL, and then In turn, add copper sulfate pentahydrate at a concentration of 0.5 mg / mL and hydrogen peroxide at a concentration of 0.5 mg / mL to the dopamine solution at a mass ratio of 1:1. The mass ratio of dopamine to copper sulfate pentahydrate is 10:1. The ...

Embodiment 3

[0046] A preferred embodiment of the present invention provides a method for preparing a hydrophilic / hydrophobic smart surface material induced and controlled by green light. The specific preparation steps are as follows:

[0047] Using N-methylpyrrolidone as the solvent and polycaprolactone with a concentration of 14wt% as the substrate, the nanofiber substrate was prepared by electrospinning. The electrospinning voltage was 15kV, the receiving plate distance was 16cm, and the injection speed was is 15mL / h; the dopamine is polymerized and coated on the surface of the nanofiber substrate, and a dopamine solution is first prepared, using tris buffer (tris buffer, pH=8.5) as a solvent, and the dopamine concentration is 5mg / mL, and then In turn, add copper sulfate pentahydrate at a concentration of 0.5 mg / mL and hydrogen peroxide at a concentration of 0.5 mg / mL to the dopamine solution at a mass ratio of 1:1. The mass ratio of dopamine to copper sulfate pentahydrate is 10:1. The ...

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Abstract

The invention discloses a hydrophilic / hydrophobic intelligent surface material induced and controlled by green light and its preparation method and application. Through electrospinning technology, polycaprolactone is used to prepare nanofibers to realize the preparation of materials with large specific surface area; Under the action of hydrogen peroxide / copper sulfate, dopamine is polymerized and coated on the surface of nanofibers; finally, through a one-step chemical reaction, the donor-acceptor Steinhaus adduct structure is prepared on the surface of nanofibers to form a green light-sensitive smart surface . The present invention prepares smart surface materials sensitive to long-wavelength light, realizes that the hydrophilicity / hydrophobicity of the material surface can be controlled by long-wavelength light, liberates the limitation that traditional smart surface materials can only be controlled by ultraviolet light, and expands light-sensitive smart surfaces in the biological field application potential.

Description

technical field [0001] The invention belongs to the technical field of light-sensitive materials, and in particular relates to a hydrophilic / hydrophobic intelligent surface material induced and controlled by green light, a preparation method and application thereof. Background technique [0002] As a non-contact external stimulus, light is widely used to control chemical processes and material properties. Light-sensitive materials are composed of light-sensitive molecules, whose key properties can be precisely, efficiently and cleanly controlled by external stimuli, and are an important part of smart materials. Light-sensitive molecules are the basis of light-sensitive materials. However, most of the photosensitive molecules that exist at present, such as azobenzene, spiropyran, diarylene, etc., only respond to ultraviolet light, which greatly limits the application range of photosensitive materials, especially in biological application field. The two disadvantages of ult...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M15/61D06M13/355D06M13/175D01D5/00D06M101/32
CPCD01D5/003D01D5/0061D01D5/0092D06M13/175D06M13/355D06M15/61D06M2101/32D06M2200/12
Inventor 王东升古良鸿董树敏费雪郑永豪
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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