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Cross-linked AIE polymer nano-particles, preparation thereof and application of cross-linked AIE polymer nano-particles in water-phase nitro aromatic compound detection

A nanoparticle and polymer technology, used in measurement devices, fluorescence/phosphorescence, instruments, etc., can solve the problems of inability to detect nitroaromatic compounds, increase in nanoparticle size, and low colloidal stability, and achieve optimal solvent resistance. High performance, fast capture, high sensitivity

Active Publication Date: 2021-05-25
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, hydrophobic AIE small molecules have problems such as poor water dispersibility and low colloidal stability when used. Relatively speaking, AIE polymer nanoparticles have better water dispersibility and colloidal stability, and are more suitable for aqueous nitro Detection of aromatic compounds
However, it should be pointed out that when non-crosslinked AIE polymer nanoparticles are used to detect nitroaromatic compounds in the water phase, they are easily swelled by nitroaromatic compounds, resulting in larger nanoparticles and even system instability. Accurate and quantitative detection of nitroaromatic compounds [Sens.Actuators B Chem.2020,302,127201]

Method used

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  • Cross-linked AIE polymer nano-particles, preparation thereof and application of cross-linked AIE polymer nano-particles in water-phase nitro aromatic compound detection
  • Cross-linked AIE polymer nano-particles, preparation thereof and application of cross-linked AIE polymer nano-particles in water-phase nitro aromatic compound detection
  • Cross-linked AIE polymer nano-particles, preparation thereof and application of cross-linked AIE polymer nano-particles in water-phase nitro aromatic compound detection

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] 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.

[0079] 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

[0087] 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.

[0088] 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

[0090] 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.

[0091] 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 cross-linked AIE polymer nanoparticles, preparation thereof and application of the cross-linked AIE polymer nanoparticles in water-phase nitroaromatic compound detection. The cross-linked AIE polymer nanoparticles are prepared by the following steps: 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, performing pre-emulsification and ultrasonic emulsification treatment to obtain a monomer miniemulsion, and performing free radical polymerization reaction in monomer droplets, introducing an AIE monomer into a cross-linked polymer matrix in a copolymerization mode, so as to obtain the cross-linked AIE polymer nanoparticles. The invention provides the application of the cross-linked AIE polymer nanoparticle as a fluorescent probe for detecting a water-phase nitroaromatic compound, and the cross-linked AIE polymer nanoparticles have the advantages of high sensitivity, low detection lower limit, good stability and the like.

Description

[0001] (1) Technical field [0002] The invention relates to a cross-linked aggregation-induced luminescent (AIE) polymer nanoparticle and its preparation and application in the detection of aqueous nitroaromatic compounds. [0003] (2) Background technology [0004] Nitroaromatic compounds are a class of common chemicals that are widely used in military, industrial and agricultural construction and production, but because of their high toxicity, they often cause serious pollution to water bodies during production, use and transportation [Chemosphere, 2009,75,435-41.]. Therefore, the development of new materials for rapid quantitative detection of nitroaromatic compounds in aqueous phase is of great significance to ensure human safety, health and ecological balance. [0005] At present, the commonly used methods for the detection of nitroaromatic compounds in aqueous phase mainly include ion mobility method [Talanta 2003,59,327-333.], gas chromatography-mass spectrometry [Tala...

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 曹志海梁小琴赵路通陶萌秘一芳
Owner ZHEJIANG SCI-TECH UNIV