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Preparation method and application of myclobutanil molecularly imprinted inverse opal photonic crystal hydrogel sensor

A technology of photonic crystals and molecular imprinting, applied in chemical instruments and methods, analyzing materials through chemical reactions, and analyzing materials through observing the impact on chemical indicators, etc., can solve the problem of myclobutanil fungicide molecules Problems such as imprinting photonic crystal hydrogel to achieve the effect of saving manpower, convenient operation and low detection limit

Pending Publication Date: 2020-09-08
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, there is no relevant report on the preparation of molecularly imprinted photonic crystal hydrogel of myclobutanil fungicide

Method used

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  • Preparation method and application of myclobutanil molecularly imprinted inverse opal photonic crystal hydrogel sensor
  • Preparation method and application of myclobutanil molecularly imprinted inverse opal photonic crystal hydrogel sensor
  • Preparation method and application of myclobutanil molecularly imprinted inverse opal photonic crystal hydrogel sensor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1: The preparation method and application of the myclobutanil molecularly imprinted inverse opal photonic crystal hydrogel film are as follows:

[0031] (1) After preheating the constant temperature water tank to 40°C, fix the two-necked flask above the constant temperature water tank, add ammonia water, ultrapure water and absolute ethanol into the bottle and seal it, set the stirring speed to 1700r / min, and stir fully for 6 minutes Finally, after changing the stirring speed to 400r / min, add the mixture of absolute ethanol and tetraethyl orthosilicate into a two-necked flask and carry out a polymerization reaction at 40°C for 5 hours. After the reaction is completed, centrifuge to remove the supernatant, and wash with absolute ethanol for 2 times, remove the supernatant to obtain SiO 2 Microsphere emulsion; wherein the molar ratio of ammonia water, absolute ethanol and ultrapure water is 1:40:248, and the molar ratio of tetraethyl orthosilicate and absolute eth...

Embodiment 2

[0037] Example 2: The preparation method and application of the myclobutanazole molecularly imprinted inverse opal photonic crystal hydrogel film are as follows:

[0038] (1) After preheating the constant temperature water tank to 35°C, fix the two-necked flask above the constant temperature water tank, add ammonia water, ultrapure water and absolute ethanol into the bottle and seal it, set the stirring speed to 1600r / min, and stir fully for 7 minutes Finally, after changing the stirring speed to 500r / min, add the mixture of absolute ethanol and tetraethyl orthosilicate into a two-necked flask and carry out a polymerization reaction at 35°C for 6 hours. After the reaction is completed, centrifuge to remove the supernatant, and wash with absolute ethanol for 3 times, remove the supernatant to obtain SiO 2 Microsphere emulsion; wherein the mol ratio of ammonia, absolute ethanol and ultrapure water is 1:35:235, and the mol ratio of tetraethyl orthosilicate and absolute ethanol is...

Embodiment 3

[0044] Example 3: The preparation method and application of the myclobutanazole molecularly imprinted inverse opal photonic crystal hydrogel film are as follows:

[0045] (1) After preheating the constant temperature water tank to 30°C, fix the two-necked flask above the constant temperature water tank, add ammonia water, ultrapure water and absolute ethanol into the bottle and seal it, set the stirring speed to 1500r / min, and fully stir for 8 minutes Finally, the stirring speed was changed to 700r / min, and the mixture of absolute ethanol and tetraethyl orthosilicate was added into a two-necked flask for polymerization reaction at 30°C for 7 hours. After the reaction was completed, the supernatant was removed by centrifugation, and washed with absolute ethanol for 2 times, remove the supernatant to get clean SiO 2 Microsphere emulsion; wherein the mol ratio of ammonia, absolute ethanol and ultrapure water is 1:50:250, and the mol ratio of tetraethyl orthosilicate and absolute ...

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Abstract

The invention discloses a preparation method of a myclobutanil molecularly imprinted inverse opal photonic crystal hydrogel sensor. According to the method, SiO2 microspheres with good monodispersityare prepared firstly, then a glass sheet with opal structure photonic crystals is obtained, and then a myclobutanil imprinted structure is formed in an opal three-dimensional network structure throughthermal polymerization, and finally, SiO2 microspheres and myclobutanil molecules are removed to prepare the molecularly imprinted photonic crystal hydrogel film sensor. The myclobutanil imprinted cavity in the sensor can quickly capture myclobutanil molecules, so that the Bragg diffraction peak of the myclobutanil molecules is subjected to red shift, and chemical signals are converted into optical signals, thereby implementing quick detection of the myclobutanil concentration in the sample. The method is simple in steps and convenient to operate, has the advantages of high sensitivity and selectivity, short detection time, low detection limit and the like, and overcomes the defects of complex steps, expensive equipment, long time and the like in the traditional analysis method.

Description

technical field [0001] The invention belongs to the field of material chemistry and analysis and detection, and relates to a preparation method of myclobutanil molecular imprinted anti-opal photonic crystal hydrogel sensor. Background technique [0002] Myclobutanil is a commonly used triazole fungicide, which has the characteristics of high efficiency, low toxicity, strong systemic property, long-lasting effect and broad spectrum. It can inhibit the biosynthesis of ergosterol in pathogenic bacteria. Myclobutanil is mainly used to prevent diseases of fruit trees and grains caused by the genus Scrubella, Sclerotinia and Coccomella. Myclobutanil fungicide can remain in plants for 70 days. Residual myclobutanil will interfere with the endocrine system of human and animals, affect the reproductive function of the body, and even lead to death. Oral administration of myclobutanil can lead to liver damage, abnormal myocardial enzymes and respiratory failure, resulting in serious d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/26C08J5/18C08J3/075C08F292/00C08F220/04C08F222/14C08F220/06G01N21/78B01J20/26B01J20/30C08L51/10
CPCC08J9/26C08J5/18C08J3/075C08F292/00G01N21/78B01J20/268C08J2351/10C08J2201/0424C08F220/04C08F222/102C08F220/06C08F226/06
Inventor 顾丽莉李子怡佟振浩杜康刘东辉彭健孔光辉师君丽
Owner KUNMING UNIV OF SCI & TECH
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