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Fluorescent sensing film based on AIE polymer nanoparticles as well as preparation and application of fluorescent sensing film

A fluorescent sensing film and nanoparticle technology, applied in fluorescence/phosphorescence, material analysis through optical means, instruments, etc., can solve the problems of not easy to carry, expensive, large equipment volume, etc., and achieve good reusability and use Long life and good stability

Active Publication Date: 2021-05-28
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] At present, relatively mature detection techniques, such as ion mobility method [Talanta 2003,59(2), 327-333.], gas chromatography-mass spectrometry method [Talanta 2001,54(3), 427-438] and Raman spectroscopy [Anal .Chem.2000, 72(23), 5834-5840] can be used for the detection of explosives, but there are problems such as complicated sample pretreatment, large equipment volume, not easy to carry, and expensive

Method used

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  • Fluorescent sensing film based on AIE polymer nanoparticles as well as preparation and application of fluorescent sensing film
  • Fluorescent sensing film based on AIE polymer nanoparticles as well as preparation and application of fluorescent sensing film
  • Fluorescent sensing film based on AIE polymer nanoparticles as well as preparation and application of fluorescent sensing film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] Weigh 0.075g emulsifier sodium lauryl sulfate and 0.1g Tween-20 and dissolve in 12.5g deionized water to obtain emulsifier aqueous solution; weigh 0.0005g AIE-13 molecule and dissolve 0.04g n-hexadecane and 0.5g In the mixed solution of divinylbenzene, the oil phase solution is obtained; the emulsifier aqueous solution is added to the oil phase solution, and the coarse emulsion is obtained after stirring and pre-emulsified; the container containing the coarse emulsion is placed in an ice-water bath, and the power Ultrasound at 400W for 9 minutes to prepare a stable monomer miniemulsion; add 0.025g of potassium persulfate to the monomer miniemulsion, pass nitrogen to remove oxygen, raise the temperature to 70°C, and react for 5 hours under the protection of nitrogen to obtain AIE Polymer Nanoparticle Emulsion.

[0067] The Z-average particle diameter of the cross-linked AIE polymer nanoparticles measured by a dynamic light scattering nanometer is 50nm, and the PDI is 0.0...

Embodiment 2

[0076] Weigh 0.15g emulsifier sodium dodecylbenzene sulfonate and dissolve it in 12.5g deionized water to obtain emulsifier aqueous solution; weigh 0.003g AIE-1 molecule and 0.03g azobisisoheptanonitrile and dissolve it in 0.2g alkane, 1.75g ​​ethylene glycol dimethacrylate and 0.75g styrene mixed solution to obtain an oil phase solution; add the emulsifier aqueous solution to the oil phase solution, and make a rough emulsion after stirring and pre-emulsifying; Place the container with the coarse emulsion in an ice-water bath, and use an ultrasonic wave with a power of 200W for 15 minutes to obtain a stable monomer fine emulsion; pass nitrogen to deoxygenate, raise the temperature to 65°C, and react for 10 hours under the protection of nitrogen to obtain AIE Polymer Nanoparticle Emulsion.

[0077] The Z-average particle diameter of the AIE polymer nanoparticles measured by a dynamic light scattering nanometer is 70nm, and the PDI is 0.091. The gel rate of the AIE polymer nano...

Embodiment 3

[0081] Weigh 0.06g emulsifier hexadecyltrimethylammonium bromide and dissolve it in 12.5g deionized water to obtain emulsifier aqueous solution; weigh 0.004g AIE-2 molecule and 0.04g azobisisobutyronitrile and dissolve it in 0.12g alkane, 1g of neopentyl glycol dimethacrylate and 1g of methyl methacrylate in a mixed solution to obtain an oil phase solution; the emulsifier aqueous solution is added to the oil phase solution, and a rough emulsion is obtained after pre-emulsification by stirring; Place the container containing the coarse emulsion in an ice-water bath, and use an ultrasonic wave with a power of 380W for 12 minutes to prepare a stable monomer fine emulsion; pass nitrogen to deoxygenate, raise the temperature to 65°C, and react for 10 hours under nitrogen protection. Prepare AIE polymer nanoparticle emulsion.

[0082] The Z-average particle diameter of the AIE polymer nanoparticles measured by a dynamic light scattering nanometer is 80 nm, and the PDI is 0.051. The...

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Abstract

The invention discloses a fluorescent sensing film based on AIE polymer nanoparticles as well as preparation and application of the fluorescent sensing film. The fluorescent sensing film is obtained by forming a uniform thin film on the surface of a solid base material by a cross-linked AIE polymer nanoparticle emulsion in a dipping or spin-coating manner, and then drying the thin film and carrying out heat treatment on the thin film. The cross-linked AIE polymer nanoparticle emulsion is prepared by the following method: preparing an emulsifier aqueous solution, mixing and dissolving an AIE monomer, a conventional monovinyl monomer, a cross-linked monomer and a co-stabilizer into an oil phase solution, carrying out pre-emulsification and ultrasonic emulsification treatment to obtain a monomer miniemulsion, and introducing an AIE monomer into a cross-linked polymer matrix in a copolymerization manner through a free radical polymerization reaction in monomer droplets, so as to obtain a cross-linked AIE polymer nanoparticle emulsion. The invention provides application of the fluorescent sensing film based on AIE polymer nanoparticles in detection of nitroaromatic compounds, and the fluorescent sensing film has the advantages of high sensitivity, good stability and the like.

Description

[0001] (1) Technical field [0002] The invention relates to a fluorescent sensing membrane based on AIE polymer nanoparticles, its preparation and application in the detection of nitroaromatic compounds. [0003] (2) Background technology [0004] Nitroaromatic compounds, such as 2,4,6-trinitrotoluene (TNT), picric acid (PA), 2,4-dinitrotoluene (DNT), are important explosive components and are potential carcinogens Substances are highly threatening to public security and highly ecologically destructive [J.Appl.Toxicol., 2014, 34(8), 810-824; Chemosphere, 2009, 75(4), 435-41.]. Therefore, the rapid detection of such compounds is of great significance for the timely detection of hidden explosives, the prevention of terrorist crimes, the protection of public safety, and the monitoring of environmental quality. [0005] At present, relatively mature detection techniques, such as ion mobility method [Talanta 2003,59(2), 327-333.], gas chromatography-mass spectrometry method [Talan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F212/36C08F222/14C08F212/08C08F216/16C08F212/14C08F220/14C08F220/18C08F220/20G01N21/64
CPCC08F212/36C08F222/102C08F220/14C08F222/103C08F212/08G01N21/643G01N2021/6432C08F216/165C08F220/1811C08F220/20C08F212/22C08F222/104C08F220/1818
Inventor 曹志海梁小琴张森秘一芳
Owner ZHEJIANG SCI-TECH UNIV
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