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Method for preparing stimulating responsive polymer brush

A stimuli-responsive, polymer brush technology, applied in the field of preparation of stimuli-responsive polymer brushes, can solve the problems of difficult large-scale preparation, time-consuming and labor-intensive, restricting the use of polymer brushes, etc., to achieve simple operation, broad application prospects, The effect of high graft density

Inactive Publication Date: 2009-10-21
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing methods are time-consuming and laborious, and it is difficult to achieve large-scale preparation, which restricts the further use of polymer brushes in biosensors. It is of great significance to research and develop new and convenient preparation methods for polymer brushes.

Method used

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  • Method for preparing stimulating responsive polymer brush
  • Method for preparing stimulating responsive polymer brush
  • Method for preparing stimulating responsive polymer brush

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] 1. Substrate treatment

[0020] Boil the silicon substrate in a mixed solution of concentrated sulfuric acid and hydrogen peroxide for 1 hour. The mass ratio of concentrated sulfuric acid and hydrogen peroxide in the mixed solution is 7:3. Then place the substrate in acetone for 30 minutes and rinse it with deionized water. , drying to remove organic matter and impurities on the surface of the substrate.

[0021] 2. Self-assembly of epoxy silane coupling agent

[0022] The cleaned and dried substrate was immersed in a 5 mM toluene solution of 3-glycidyl propoxytrimethoxysilane and allowed to stand for 12 hours. Then, the taken-out substrate was ultrasonically cleaned successively in toluene and acetone, and then dried to obtain the self-assembled substrate of epoxy silane coupling agent.

[0023] 3. Initiator DAB-16-TX grafting

[0024] Immerse the self-assembled substrate of the epoxy silane coupling agent in a chloroform solution with a photoinitiator DAB-16-TX con...

Embodiment 2

[0028] 1. Substrate treatment

[0029] Boil the silicon substrate in a mixed solution of concentrated sulfuric acid and hydrogen peroxide for 1.5 hours. The mass ratio of concentrated sulfuric acid to hydrogen peroxide in the mixed solution is 7:3. Then place the substrate in acetone for 20 minutes of ultrasonication. Rinse and dry to remove organic matter and impurities on the surface of the substrate.

[0030] 2. Self-assembly of epoxy silane coupling agent

[0031] The cleaned and dried substrate was immersed in a 5 mM toluene solution of 3-glycidyl propoxytrimethoxysilane and allowed to stand for 12 hours. Then, the taken-out substrate was ultrasonically cleaned successively in toluene and acetone, and then dried to obtain the self-assembled substrate of epoxy silane coupling agent.

[0032] 3. Initiator DAB-16-TX grafting

[0033] Immerse the self-assembled substrate of the epoxy silane coupling agent in a chloroform solution with a photoinitiator DAB-16-TX concentrati...

Embodiment 3

[0038] 1. Substrate treatment

[0039] Boil the silicon substrate in a mixed solution of concentrated sulfuric acid and hydrogen peroxide for 2 hours. The mass ratio of concentrated sulfuric acid and hydrogen peroxide in the mixed solution is 7:3. Then place the substrate in acetone for 10 minutes and rinse it with deionized water. , drying to remove organic matter and impurities on the surface of the substrate.

[0040] 2. Self-assembly of epoxy silane coupling agent

[0041] The cleaned and dried substrate was immersed in a 10 mM toluene solution of 3-glycidyl propoxytrimethoxysilane and allowed to stand for 12 h. Then, the taken-out substrate was ultrasonically cleaned successively in toluene and acetone, and then dried to obtain the self-assembled substrate of epoxy silane coupling agent.

[0042] 3. Initiator DAB-16-TX grafting

[0043] Immerse the self-assembled substrate of the epoxy silane coupling agent in a chloroform solution with a photoinitiator DAB-16-TX concent...

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PUM

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Abstract

The invention relates to a method for preparing a stimulating responsive polymer brush, in particular to a polymer brush which can modify a surface and has stimulating responsiveness to temperature, and belongs to the technical field of micro nano material preparation. The stimulating responsive polymer brush is obtained by performing surface cleaning on a substrate by using a mixed solution containing concentrated sulphuric acid and hydrogen peroxide, performing epoxy silane coupling agent self-assembly and performing graft by adopting a photoinitiator. The method fixes a thioxanthone photoinitiator containing coinitiator amine on the surface of a base material by self-assembly technology, prepares the polymer brush by surface photo-initiation polymerization, is simple in operation, has the initiator with high graft intensity, high efficiency and speed of initiation polymerization, can be widely suitable for monomers capable of performing photo-initiation polymerization, and has wide application prospect.

Description

technical field [0001] The invention relates to a preparation method of a stimuli-responsive polymer brush, in particular to a preparation method of a surface-modifying stimuli-responsive polymer brush. It belongs to the technical field of micro-nano material preparation. Background technique [0002] Stimuli-responsive polymers are a class of polymers that can respond to subtle changes (stimuli) in the external environment, resulting in corresponding changes in physical structure and chemical properties or even mutations. External stimuli can be temperature, pH, ionic strength ( Electrolyte), electric field, light, etc. Environmentally responsive polymers have a wide range of applications, such as sensors, actuators, smart switches, drivers, displays, optical communications, drug carriers, biocatalysis and other fields. The stimuli-responsive polymer brush is an important way for the practical application of stimuli-responsive polymers, which has aroused the interest of m...

Claims

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Application Information

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IPC IPC(8): C03C17/30C04B41/49
Inventor 印杰姜学松贾新雁刘睿
Owner SHANGHAI JIAO TONG UNIV
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