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Synthesis of fluorescent hydrogel sensor based on ionic liquid and application of fluorescent hydrogel sensor in detection of paranitroaniline

A hydrogel and sensor technology, applied in the synthesis of fluorescent hydrogel sensors and the application field of detection of p-nitroaniline, can solve problems such as sensitivity limitation, and achieve the effects of high sensitivity, short detection time and good selectivity

Active Publication Date: 2021-11-12
NORTHWEST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This performance can address some of the shortcomings of traditional rigid sensors, especially sensitivity limitations due to hindered diffusion of contaminants in traditional dense thin-film materials

Method used

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  • Synthesis of fluorescent hydrogel sensor based on ionic liquid and application of fluorescent hydrogel sensor in detection of paranitroaniline
  • Synthesis of fluorescent hydrogel sensor based on ionic liquid and application of fluorescent hydrogel sensor in detection of paranitroaniline
  • Synthesis of fluorescent hydrogel sensor based on ionic liquid and application of fluorescent hydrogel sensor in detection of paranitroaniline

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Weigh 300 mg of hydroxyethyl methacrylate, 3.5 mg of N,N'-methylenebisacrylamide, 4 mg of azobisisobutyronitrile, and 10 mg of 3-(anthracen-9-ylmethyl)-1-ethylene Base-1H-imidazol-3-ium chloride was added to 10mL dimethyl sulfoxide, ultrasonicated for 10min, added to the flask, and then blank paper was added; vacuum filled with argon, three cycles of degassing, argon purging, The flask was sealed and placed in an oil bath at a temperature of 80° C. for 15 hours; washed with ethanol, dimethyl sulfoxide and deionized water in sequence, and dried in vacuum to synthesize a fluorescent hydrogel sensor.

[0027] 1. Microscopic morphology of the fluorescent hydrogel sensor.

[0028] Microscopic morphology: the microscopic morphology of the fluorescent hydrogel sensor synthesized in Example 1 was observed with a scanning electron microscope, and its microscopic electron microscope morphology diagram, such as figure 1 and figure 2 As shown, it can be seen that the fibrous net...

Embodiment 2

[0037]Weigh 600 mg of hydroxyethyl methacrylate, 7 mg of N,N'-methylenebisacrylamide, 8 mg of azobisisobutyronitrile, and 20 mg of 3-(anthracene-9-ylmethyl)-1-vinyl -1H-imidazol-3-ium chloride was added to 20mL dimethyl sulfoxide, ultrasonicated for 10min, added to the flask, and then added to textiles; vacuumed and filled with argon, degassed three times, argon purged, closed The flask was placed in an oil bath at 60°C to react for 24 hours; washed with ethanol, dimethyl sulfoxide, and deionized water in sequence, and dried in vacuum to synthesize a fluorescent hydrogel sensor.

Embodiment 3

[0039] Weigh 450 mg of hydroxyethyl methacrylate, 5.25 mg of N,N'-methylenebisacrylamide, 6 mg of azobisisobutyronitrile, and 15 mg of 3-(anthracen-9-ylmethyl)-1-ethylene Base-1H-imidazol-3-ium chloride was added to 7.5mL dimethyl sulfoxide, sonicated for 10min, added to the flask, and then added to the textile; evacuated and filled with argon, degassed three times, and argon purged , seal the flask, and place it in an oil bath at 100°C for 8 hours; wash with ethanol, dimethyl sulfoxide, and deionized water in sequence, and dry in vacuum to synthesize a fluorescent hydrogel sensor.

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Abstract

The invention discloses synthesis of a fluorescent hydrogel sensor based on ionic liquid and application of the fluorescent hydrogel sensor in detection of paranitroaniline, hydroxyethyl methylacrylate, N, N '-methylene bisacrylamide, a fluorescent ionic liquid monomer and an initiator azodiisobutyronitrile are dissolved in dimethyl sulfoxide to prepare a mixed solution; the mixed solution is adsorbed onto a substrate material, in-situ cross-linking polymerization is performed under a heating condition, washed and dried to synthesize the fluorescent hydrogel sensor. The material can be used as a fluorescent sensor for rapidly detecting paranitroaniline, has the advantages of high sensitivity, short detection time, good selectivity and the like, and can be applied to detection of paranitroaniline in environmental living water samples.

Description

technical field [0001] The invention belongs to the technical field of material chemistry, and relates to a method for synthesizing a fluorescent hydrogel sensor based on an ionic liquid; the invention also relates to a method for detecting p-nitroaniline based on a fluorescent hydrogel sensor synthesized by the synthesis method. in the application. Background technique [0002] p-Nitroaniline (p-NA) is an important chemical intermediate, which is widely used as a dye, pesticide, and pharmaceutical intermediate, and can also be used to produce antioxidants, preservatives, etc. During industrial production, p-NA is released into the environment in the form of industrial waste. Since p-NA has good solubility in water, it is easy to infiltrate and accumulate in soil or groundwater. p-NA is highly toxic, mutagenic and carcinogenic. It is not only highly toxic to aquatic organisms, but also harmful to human health. It can be absorbed through the skin and respiratory tract, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/20C08F222/38C08F226/06C09K11/06G01N21/64
CPCC08F220/20C09K11/06G01N21/6402C09K2211/14C08F222/385C08F226/06
Inventor 宋鹏飞马菁菁李永莉马菊萍姬维刚席琦
Owner NORTHWEST NORMAL UNIVERSITY
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