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Method of preparing flexible molecularly imprinted sensor based on carbon nano tube-loaded polymeric micelle

A technology of carbon nanotubes and molecular imprinting, applied in the direction of nanotechnology, nanotechnology, nanotechnology, etc. for materials and surface science, can solve application limitations, limitations of preparation methods, molecularly imprinted polymer micelles and carbon nanotubes Weak force and other problems, to achieve the effect of increasing specific surface area, increasing adsorption capacity, excellent sensing performance and stability

Inactive Publication Date: 2017-06-30
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the fly in the ointment is that the molecularly imprinted polymer micelles and carbon nanotubes in this patent have a weak interaction force, and the preparation of the sensing coating is mainly realized by the method of drop coating to form a film, which limits the preparation method; in addition, the patent The method provided is mainly used to modify some rigid electrodes, so that its application as a flexible sensor device is limited

Method used

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  • Method of preparing flexible molecularly imprinted sensor based on carbon nano tube-loaded polymeric micelle
  • Method of preparing flexible molecularly imprinted sensor based on carbon nano tube-loaded polymeric micelle
  • Method of preparing flexible molecularly imprinted sensor based on carbon nano tube-loaded polymeric micelle

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Embodiment 1

[0031] A method for preparing a flexible molecularly imprinted sensor based on carbon nanotube-loaded polymer micelles, characterized in that the preparation steps are as follows:

[0032] (1) Synthesis of amphiphilic photosensitive polymer

[0033] Under normal pressure, acrylic acid, 7-(4-vinylbenzyloxy)-4-methylcoumarin, and isooctyl acrylate are dissolved in dioxane at a molar ratio of 5:5:5; Azobisisobutyronitrile (2% of the total molar ratio of the monomers) is dissolved; react under nitrogen protection and 65°C for 24 hours; after the reaction, use petroleum ether as a precipitant and tetrahydrofuran as a solvent for repeated precipitation dissolved, and the resulting product was vacuum-dried to obtain the amphiphilic photosensitive polymer PEMA-5:5:5.

[0034] (2) Preparation of carbon nanotube-loaded polymer micelles

[0035] Dissolve the above-mentioned amphiphilic photosensitive polymer PEMA-5:5:5 in N,N-dimethylformamide to prepare a 5 mg / ml polymer solution, add c...

Embodiment 2

[0039] A method for preparing a flexible molecularly imprinted sensor based on carbon nanotube-loaded polymer micelles, characterized in that the preparation steps are as follows:

[0040] (1) Synthesis of amphiphilic photosensitive polymer

[0041] Under normal pressure conditions, methacrylic acid, 7-(4-vinylbenzyloxy)-4-methylcoumarin, and isooctyl acrylate were dissolved in dioxane at a molar ratio of 5:1:4; The initiator azobisisobutyronitrile (1% of the total molar ratio of the monomers) is dissolved; under nitrogen protection, 65°C, react for 12h; After repeated precipitation and dissolution, the resulting product was vacuum-dried to obtain the amphiphilic photosensitive polymer PEMM-5:1:4.

[0042] (2) Preparation of carbon nanotube-loaded polymer micelles

[0043] Dissolve the above-mentioned amphiphilic photosensitive polymer PEMM-5:1:4 in tetrahydrofuran to prepare a 10 mg / ml polymer solution, add carbon nanotubes, and ultrasonically disperse for 12 hours to obtai...

Embodiment 3

[0047] (1) Synthesis of amphiphilic photosensitive polymer

[0048] Under normal pressure conditions, acrylic acid, 7-(4-vinylbenzyloxy)-4-methylcoumarin, and lauryl methacrylate are dissolved in dioxane at a molar ratio of 5:4:1; azobisisoheptanonitrile (according to 3% of the total molar ratio of the monomers) and make it dissolve; under nitrogen protection, 65 ℃ of conditions, react for 48h; The precipitate was dissolved, and the obtained product was vacuum-dried to obtain the amphiphilic photosensitive polymer PEML-5:4:1.

[0049] (2) Preparation of carbon nanotube-loaded polymer micelles

[0050] Dissolve the above-mentioned amphiphilic photosensitive polymer PEML-5:4:1 in dioxane to prepare a 1 mg / ml polymer solution, add carbon nanotubes, and ultrasonically disperse for 24 hours to obtain a uniformly dispersed amphiphilic photosensitive polymer / carbon nanotube dispersion (the concentration of carbon nanotubes is 0.1 mg / ml); slowly drop caffeine solution (5 mg / ml) in...

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Abstract

The invention discloses a method of preparing a flexible molecularly imprinted sensor based on carbon nanotube-loaded polymeric micelle. The method comprises the following three steps of: synthesizing an amphipathic photosensitive polymer; preparing the carbon nanotube-loaded polymeric micelle; and constructing the flexible molecularly imprinted sensor. The polymer prepared by the method can be interacted with template molecules and a carbon nanotube at the same time, a carbon nanotube composite material loading the molecularly imprinted polymeric micelle is prepared by self-assembly in one step, and the material is finally used for constructing the flexible molecularly imprinted sensor. The method disclosed by the invention is simple to operate, and the obtained flexible sensor has the advantages of excellent molecular recognition ability, high sensitivity, strong stability and the like, and overcomes the defects of a conventional physical sensor. In addition, the flexible sensor is easily integrally applied to a conventional flexible micro-electronic apparatus, and can be widely applied to the fields of food safety, biomedicine, life health and the like.

Description

technical field [0001] The invention relates to the field of electrochemical sensors, in particular to a method for using carbon nanotubes to load polymer micelle and applying it to prepare flexible molecularly imprinted sensors. Background technique [0002] At present, many intelligent detection equipment have adopted a large number of various sensors, and their applications have already penetrated into various aspects such as industrial production, marine exploration, environmental protection, medical diagnosis, bioengineering, space development, and smart home. To some extent, the sensor can be said to be a key component that determines the characteristics and performance indicators of a system. [0003] As the application requirements of the information age are getting higher and higher, the expectations and ideal requirements for various performance parameters such as the range, accuracy and stability of the measured information are gradually increasing. In the face o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/30C25D13/04B82Y30/00
CPCB82Y30/00C25D13/04G01N27/30
Inventor 刘晓亚林戈瑜张广俊姚骞张伟璇胡志威许升赵伟吴倩
Owner JIANGNAN UNIV
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