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Photonic crystal sensing material, preparation method and application thereof

A technology for sensing materials and photonic crystals, which is applied in the direction of material analysis, analysis materials, and instruments by optical means, can solve the problems of photonic crystals that have not yet detected ciprofloxacin, high preparation costs, and complex preparation processes. Achieve the effect of lowering the preparation threshold and cost, high sensitivity and simple preparation process

Active Publication Date: 2017-11-17
INST OF HYGIENE & ENVIRONMENTAL MEDICINE PLA ACAD OF MILITARY MEDICAL
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0006] At present, there is no photonic crystal for the detection of ciprofloxacin, and the preparation process of these photonic crystal materials is complicated, requiring the preparation of microspheres and dispersing them in the gel for immobilization; some require the preparation of opal templates first, and then Polymer is poured into the formwork gaps and the opal formwork is etched away
[0007] Therefore, it is necessary to provide a method for preparing a photonic crystal sensing material for detecting ciprofloxacin, and at the same time, overcome the problems of complex preparation process and high preparation cost of current photonic crystal materials

Method used

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  • Photonic crystal sensing material, preparation method and application thereof
  • Photonic crystal sensing material, preparation method and application thereof
  • Photonic crystal sensing material, preparation method and application thereof

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preparation example Construction

[0027] The first aspect of the present invention provides a kind of preparation method of photonic crystal sensing material, and this preparation method comprises:

[0028] (1) In the presence of an inert gas, the compound shown in formula I, the compound shown in formula II, water and an initiator are contacted to carry out soap-free emulsion polymerization to obtain polymer microspheres;

[0029]

[0030] Wherein, R is a group containing alkene group, alkyne group, alkene amido group or alkene ester group;

[0031] (2) the polymer microspheres and H 2 o 2 Contact with HRP to get PMD microspheres;

[0032] (3) Dispersing the suspension of the PMD microspheres and standing to pile up to prepare the photonic crystal sensing material.

[0033] According to the present invention, preferably, the compound of formula I is the compound shown in formula III,

[0034]

[0035] Among them, m is an integer of 2-10, R 1 is a covalent bond, -CONH(CH 2 ) p -or-COO(CH 2 ) q -...

Embodiment 1

[0053] Dissolve 20mg of 3-methacrylamido dopamine (DMA) in 3mL of the compound (MMA) shown in formula II, then add the solution to 25.5mL of deionized water, ultrasonically deoxygenate for 10min; perform mechanical stirring at 370rpm, water bath temperature When the temperature of the system reaches 80°C, add the initiator KPS (60mg KPS dissolved in 1.5mL deionized water) and continue the reaction for 90min; after centrifuging to remove the supernatant, add 1mL 0.1 mM H 2 o 2 And HRP (10.0mgHPR dissolved in 0.50mL 0.10M PBS, pH 7.00), mixed well, overnight at room temperature; then centrifuged, washed with water, centrifuged at 4000rpm for 10min, removed the supernatant and precipitate, and only collected the middle layer to obtain PMD microspheres;

[0054] Dilute the obtained PMD microspheres with deionized water into a suspension with a mass fraction of 1%, fully ultrasonically disperse it and slowly pour it into a horizontal exhibition cylinder, then place it in an oven a...

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Abstract

The invention discloses a photonic crystal sensing material, a preparation method and application thereof. The preparation method comprises: (1) in the presence of an inert gas, contacting a formula I compound, a formula II compound, water and an initiator, and carrying out soap-free emulsion polymerization reaction to obtain polymer microspheres; (2) subjecting the polymer microspheres, H2O2 and HRP to contact reaction so as to obtain PMD microspheres; and (3) dispersing the suspension of the PMD microspheres and performing standing piling, thus obtaining the photonic crystal sensing material. The photonic crystal sensing material provided by the invention has a simple preparation process, and has the advantages of convenient detection operation, rapid response, high sensitivity and wide detection range when used for detection. Specifically, R is a group containing alkylene, alkyne, alkenamide or alkene ester group.

Description

technical field [0001] The invention relates to the field of food safety, and more specifically, to a photonic crystal sensing material and a preparation method and application thereof. Background technique [0002] Ciprofloxacin [1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-7-(piperazinyl)quinolone-3-carboxylic acid] (Ciprofloxacin, CF) belongs to the group of fluoroquinolones Drug, it is a synthetic antibiotic with broad-spectrum antibacterial effect, its bactericidal effect is good and cheap, so it has become one of the most commonly used antibiotics in fish farming. However, the extensive use of CF can lead to a large amount of residues in the environment and related foods, especially in fish farming waters and fish meat, which will not only promote the emergence of bacterial resistance, but also allow CF to enter the human body through the food chain, endangering People are healthy. Therefore, there is an urgent need to monitor CF residues to protect the environment and f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/58C08F220/14C08F8/06G01N21/47
CPCC08F8/06C08F220/14C08F220/58G01N21/4788
Inventor 宁保安白家磊彭媛王江李双宋艳秋何厚罗高志贤
Owner INST OF HYGIENE & ENVIRONMENTAL MEDICINE PLA ACAD OF MILITARY MEDICAL
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