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Sulfur-alkene click chemistry-based method for preparing stimulation responsive polyether amine macromolecular brush

A stimuli-responsive, click chemistry technology, applied in the field of polymer chemistry, can solve the problems of difficult to obtain polymer films and low graft density, and achieve the effects of small environmental conditions, simple operation, and broad application prospects

Inactive Publication Date: 2011-11-23
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the surface grafting technology used in the past has the disadvantages of low grafting density and difficulty in obtaining thicker polymer films.

Method used

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  • Sulfur-alkene click chemistry-based method for preparing stimulation responsive polyether amine macromolecular brush
  • Sulfur-alkene click chemistry-based method for preparing stimulation responsive polyether amine macromolecular brush
  • Sulfur-alkene click chemistry-based method for preparing stimulation responsive polyether amine macromolecular brush

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Such as figure 1 As shown, this embodiment includes the following steps:

[0022] 1. Synthesis of gPEA-SH

[0023] 1.28g (2mmol) PPO, 1.0g (1mmol) Jeffamine L100 and 0.077g (1mmol) mercaptoethylamine were added to 10ml of absolute ethanol, and the solution was reacted at 80°C for 24h under the protection of nitrogen. After cooling to room temperature, the solution was Pour into 10 times the volume of anhydrous ether, filter, and vacuum dry to obtain 2.2 g (93%) of gPEA-SH.

[0024] 2. Substrate treatment

[0025] Boil the silicon wafer substrate in a mixed solution containing 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. Rinse and dry to remove organic matter and impurities on the surface of the substrate.

[0026] 3. Self-assembly with alkenyl silane coupling agent

[0027] The cleaned and dried substrate was immersed in a 2 mM toluene solution of 3-meth...

Embodiment 2

[0037] 1. Synthesis of gPEA-SH

[0038] Add 1.28g (2mmol) of PPO, 1.0g (1mmol) of Jeffamine L100 and 0.077g (1mmol) of mercaptoethylamine into 10ml of absolute ethanol, and react the solution at 80°C for 24h under the protection of nitrogen. After cooling to room temperature, the The solution was poured into 10 times the volume of anhydrous ether, filtered, and dried in vacuum to obtain 2.2 g (93%) of gPEA-SH.

[0039] 2. Substrate treatment

[0040] Boil the silicon wafer substrate in a mixed solution containing 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. Rinse and dry to remove organic matter and impurities on the surface of the substrate.

[0041] 3. Self-assembly with alkenyl silane coupling agent

[0042] The cleaned and dried substrate was immersed in a 5 mM toluene solution of 3-methacryloylpropoxytrimethoxysilane and allowed to stand for 5 h. Then, the ...

Embodiment 3

[0048] 1. Synthesis of gPEA-SH

[0049] Add 1.28g (2mmol) of PPO, 1.0g (1mmol) of Jeffamine L100 and 0.077g (1mmol) of mercaptoethylamine into 10ml of absolute ethanol, and react the solution at 80°C for 24h under the protection of nitrogen. After cooling to room temperature, the The solution was poured into 10 times the volume of anhydrous ether, filtered, and dried in vacuum to obtain 2.2 g (93%) of gPEA-SH.

[0050] 2. Substrate treatment

[0051] Boil the silicon wafer substrate in a mixed solution containing 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. Rinse and dry to remove organic matter and impurities on the surface of the substrate.

[0052] 3. Self-assembly with alkenyl silane coupling agent

[0053] The cleaned and dried substrate was immersed in a 5 mM toluene solution of 3-methacryloylpropoxytrimethoxysilane and allowed to stand for 5 h. Then, the ...

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Abstract

The invention discloses a sulfur-alkene click chemistry-based method for preparing a stimulation responsive polyether amine macromolecular brush in the technical field of macromolecular chemistry. The method comprises the following steps of: reacting single side amino-terminated L100, polyoxypropylene and mercaptoethylamine to prepare a mercapto-containing stimulation responsive graft polyether amine gPEA-SH macromolecular polymer, initiating sulfur-alkene click chemistry reaction of double bonds and mercapto through an initiator, and fixing the stimulation responsive graft polyether amine gPEA-SH macromolecular polymer on an alkenyl silane coupler self-assembled substrate containing double bonds to realize the preparation of the stimulation responsive polyether amine macromolecular brush. The method is simple in operation, the polyether amine macromolecular brush with double response of pH and temperature can be effectively prepared in large scale, and the potential application of the stimulation responsive polymer brush is expanded.

Description

technical field [0001] The invention relates to a method in the technical field of polymer chemistry, in particular to a method for preparing a stimulus-responsive polyetheramine polymer brush based on a thioene click chemistry method. 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. Polyetheramines are a very important class of stimuli-responsive polymers. From a structural point of view, its main chain contains a large number of PPO chain segments, and the side chain co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B41/48C08G65/00
Inventor 贾新雁姜学松刘睿
Owner SHANGHAI JIAO TONG UNIV
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