Fluorescence chemical sensor for detecting 2,4,6-trinitrophenol and preparation method of fluorescence chemical reactor

A chemical sensor, trinitrophenol technology, applied in chemical instruments and methods, fluorescence/phosphorescence, luminescent materials, etc., can solve the problems of huge instrument and equipment operation process, inability to identify and detect, difficult to quickly detect, etc., to achieve excellent Effects of thermal and chemical stability, high sensitivity, and good fluorescence characteristics

Active Publication Date: 2015-02-25
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, many instrumental analysis techniques, including ion mobility spectrometry, gas chromatography, mass spectrometry, energy dispersive X-ray diffraction analysis, nuclear quadrupole moment resonance analysis, and surface-enhanced Raman spectroscopy, etc. It can detect 2,4,6-trinitrophenol with high sensitivity, but the disadvantage is that the detection process often requires huge equipment and complex operation procedures, which takes a lot of time and is difficult to meet the needs of rapid on-site detection
However, under the interference of other electron-deficient compounds, most fluorescent chemosensors usually cannot selectively recognize and detect 2,4,6-trinitrophenol
Therefore, it is still challenging to achieve specific detection of 2,4,6-trinitrophenol

Method used

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  • Fluorescence chemical sensor for detecting 2,4,6-trinitrophenol and preparation method of fluorescence chemical reactor
  • Fluorescence chemical sensor for detecting 2,4,6-trinitrophenol and preparation method of fluorescence chemical reactor
  • Fluorescence chemical sensor for detecting 2,4,6-trinitrophenol and preparation method of fluorescence chemical reactor

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Experimental program
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Embodiment 1

[0021] In a 250mL dry single-necked round bottom flask, 0.100g of hexachlorocyclotriphosphazene and 0.320g of curcumin (the molar ratio of hexachlorocyclotriphosphazene and curcumin is 1:3) were dissolved in 50mL of acetonitrile, and then added to the above 2 mL of triethylamine was added to the solution, and the reaction was carried out at room temperature in an ultrasonic water bath (100 W) for 7 hours. After the reaction, the solid product was separated by centrifugation, washed several times with acetone and deionized water until the supernatant was colorless after centrifugation, and finally dried in vacuum at 65°C for 24 hours to obtain a yellow solid powder, which was the fluorescent chemical sensor.

[0022] Implementation effect of this embodiment: figure 1 is a schematic diagram of the preparation route of the fluorescent chemical sensor. Hexachlorocyclotriphosphazene and curcumin undergo a one-step polycondensation reaction under the condition of triethylamine as a...

Embodiment 2

[0027] In a 250mL dry single-necked round bottom flask, 0.400g hexachlorocyclotriphosphazene and 1.280g curcumin (the molar ratio of hexachlorocyclotriphosphazene and curcumin is 1:3) were dissolved in 100mL acetonitrile, and then added to the above Add 4 mL of triethylamine to the solution, and react in an ultrasonic water bath (250W) at room temperature for 5 hours. After the reaction, the solid product was separated by centrifugation, washed several times with acetone and deionized water until the supernatant was colorless after centrifugation, and finally dried in vacuum at 65°C for 24 hours to obtain a yellow solid powder, which was the fluorescent chemical sensor.

Embodiment 3

[0029] In a 250mL dry single-necked round bottom flask, 0.100g of hexachlorocyclotriphosphazene and 0.320g of curcumin (the molar ratio of hexachlorocyclotriphosphazene and curcumin is 1:3) were dissolved in 50mL of acetonitrile, and then added to the above Add 2 mL of triethylamine to the solution, and react in an ultrasonic water bath (300W) at 60°C for 5 hours. After the reaction, the solid product was separated by centrifugation, washed several times with acetone and deionized water until the supernatant was colorless after centrifugation, and finally dried in vacuum at 65°C for 24 hours to obtain a yellow solid powder, which was the fluorescent chemical sensor.

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Abstract

The invention provides a fluorescence chemical sensor for detecting 2,4,6-trinitrophenol and a preparation method of the fluorescence chemical reactor, belonging to the technical field of preparation and chemical analysis of functional high polymer materials. The fluorescence chemical sensor has a chemical structure shown in the specification. The preparation method of the fluorescence chemical sensor comprises the following steps: (1), in the presence of an acid-binding agent, performing condensation polymerization in an organic solvent by using phosphonitrilic chloride trimerl and curcumin to obtain a solution; (2), separating a solid product in the solution, washing and drying to obtain the fluorescence chemical sensor. The fluorescence chemical sensor based on ring-crosslinking type polyphosphazene, disclosed by the invention, is simple and mild in preparation process, has excellent thermal stability, chemical stability and fluorescence characteristics, can be used for realizing specific identification and detection of 2,4,6-trinitrophenol in a liquid phase, is high in sensibility, is suitable for the fields of trace explosive detection and environment monitoring, and is favorable for realizing industrial production.

Description

technical field [0001] The invention relates to a fluorescent chemical sensor, in particular to a fluorescent chemical sensor based on ring-crosslinked polyphosphazene that can be used to detect 2,4,6-trinitrophenol. The fluorescent chemical sensor can specifically recognize and detect 2,4,6-trinitrophenol in liquid phase, and has high sensitivity. The present invention further relates to a preparation method of the fluorescent chemical sensor. The invention belongs to the technical field of functional polymer material preparation and chemical analysis. technical background [0002] 2,4,6-Trinitrophenol, also known as picric acid, is a nitroaromatic compound that is often used to make high explosives and is also an environmental pollutant. Therefore, in view of the increasingly frequent terrorist activities and the continuous spread of terrorist forces in today's international society, the rapid and reliable detection of trace amounts of 2,4,6-trinitrophenol has important ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G79/04G01N21/64C09K11/06
Inventor 魏玮卢荣杰唐书渊刘晓亚
Owner JIANGNAN UNIV
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