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Preparation method of optical-response imprint recognition membrane

A photoresponse and imprinting technology, applied in the direction of color/spectral characteristic measurement, etc., can solve problems such as changes in optical responsiveness, and achieve the effects of easy operation, easy portability, and expanded application potential

Active Publication Date: 2017-10-10
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, the optical response changes significantly, and the selectivity is outstanding

Method used

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  • Preparation method of optical-response imprint recognition membrane
  • Preparation method of optical-response imprint recognition membrane
  • Preparation method of optical-response imprint recognition membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] (1) Prepare nanocrystalline cellulose (NCC), and adjust the pH of NCC to 2.4 and the concentration to 4.0 wt% by centrifugation and dialysis.

[0037] (2) Synthesize the imprinted precursor polymer of sulfonamide resin, and dissolve it with a mixed solvent of ethanol and water (15 / 85v / v%) to form a 30wt% mixed solution for use.

[0038] (3) After ultrasonically degassing the NCC suspension in step (1) for 10 minutes, pipette 10ml of NCC into a 25ml round-bottomed flask, and add 100μl of the resin imprinted precursor solution in step (2) dropwise, at room temperature The reaction was stirred for 2h. Place in a constant temperature water bath at 22°C to dry to form a film, that is, the original film of sulfamethoxazole molecular imprinting.

[0039] (4) The membrane material was placed in 16% sodium hydroxide eluting solution, and eluted in a constant temperature water bath at 70° C. for 8 hours. After taking it out, first wash and soak it with a large amount of water, ...

Embodiment 2

[0046] (1) Prepare nanocrystalline cellulose (NCC), and adjust the pH of NCC to 2.4 and the concentration to 4.0 wt% by centrifugation and dialysis.

[0047] (2) Synthesize the sulfonamide resin imprinting precursor, dissolve it with a mixed solvent of ethanol and water (15 / 85v / v%) and prepare a 30wt% mixed solution for use.

[0048] (3) After ultrasonically degassing the NCC suspension in step (1) for 10 minutes, pipette 10ml of NCC into a 25ml round bottom flask, and add 200μl of the resin imprinted precursor solution in step (2) dropwise, at room temperature The reaction was stirred for 2h. Place in a constant temperature water bath at 22°C to dry to form a film, that is, the original film of sulfamethoxazole molecular imprinting.

[0049] (4) The membrane of (3) was placed in a 16% sodium hydroxide elution solution, and eluted in a constant temperature water bath at 70° C. for 8 hours. After taking it out, first wash and soak it with a large amount of water, and then use...

Embodiment 3

[0052] (1) Prepare nanocrystalline cellulose (NCC), and adjust the pH of NCC to 2.4 and the concentration to 4.0 wt% by centrifugation and dialysis.

[0053] (2) Synthesize the imprinted precursor polymer of sulfonamide resin, and dissolve it with a mixed solvent of ethanol and water (15 / 85v / v%) to form a 30wt% mixed solution for use.

[0054] (3) After ultrasonically degassing the NCC suspension in step (1) for 20 minutes, pipette 10ml into a 25ml round bottom flask, add 300μl of the resin imprinted precursor solution in step (2) dropwise, and stir the reaction at room temperature 2h. Place in a constant temperature water bath at 22°C to dry to form a film, that is, the original film of sulfamethoxazole molecular imprinting.

[0055] (4) The membrane material was placed in 16% sodium hydroxide eluting solution, and eluted in a constant temperature water bath at 70° C. for 8 hours. After taking it out, first wash and soak it with a large amount of water, and then use a mixed...

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Abstract

The invention belongs to the field of material preparation technologies and detection technologies and provides a preparation method of an imprint optical-response recognition membrane of a sulfamethoxazole molecule. The preparation method comprises the following steps: step 1, preparing nano-crystalline cellulose (NCC); step 2, synthesizing a resin imprint precursor polymer of sulfamethoxazole; step 3, preparing an original membrane which is structurally colored; step 4, preparing an imprint optical-response recognition mesoporous membrane. According to the preparation method provided by the invention, green and recyclable liquid-crystal cellulose is used as a membrane matrix and is evaporated at room temperature and self-assembled to form a colored membrane which is regularly arrayed; a molecular imprint technology has a selective recognition property; the conversion from a complicated microscopic signal to a macroscopic visualized signal is applied to a technology for recognizing polluted target molecules.

Description

technical field [0001] The invention belongs to the field of material preparation technology and detection technology, relates to structurally colored imprinted photoresponsive recognition membranes, in particular to a method combining templated liquid crystal cellulose and molecular imprinting technology to prepare imprinted sulfamethoxazole molecules Photoresponsive recognition film. Background technique [0002] Optical signals greatly enrich life in the natural world. Usually, they are presented to people in colorful colors. For example, the elytra of many beetles always have iridescent or metallic outer sides. Such colored surfaces of the flora and fauna world have long been studied. Therefore, these unique optical responsivity phenomena continue to encourage scientists to prepare a series of optical responders, which can be used to conveniently identify things related to the human world. For example, Qin Peng and his colleagues synthesized a photoresponsor for recog...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/25
CPCG01N21/25
Inventor 张福生郑旭东刘恩秀李春香喻龙宝闫永胜
Owner JIANGSU UNIV
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