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A fluorescent probe for visually detecting ozone and its preparation method

A fluorescent probe, ozone technology, applied in chemical instruments and methods, fluorescence/phosphorescence, organic chemistry, etc., can solve problems such as inability to qualitatively detect ozone, and achieve the effect of saving costs, avoiding interference, and avoiding large-scale instruments

Inactive Publication Date: 2020-10-13
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, judging from the existing research progress, most of them detect ozone water in solution, and cannot directly detect ozone qualitatively in solid state.

Method used

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  • A fluorescent probe for visually detecting ozone and its preparation method
  • A fluorescent probe for visually detecting ozone and its preparation method
  • A fluorescent probe for visually detecting ozone and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) Synthesis of fluorescent probes

[0036] 0.5 mmol 2-(2-hydroxyphenyl)benzothiazole (HBT) was mixed with 0.75 mmol 4-bromo-1-butene and 3 mL dimethylformamide (DMF) and 1.25 mmol cesium carbonate, magnetically stirred for 12 h. Then add ice water to terminate the reaction, extract with dichloromethane and dry over anhydrous sodium sulfate respectively; then pass through the silica gel chromatography column purification of petroleum ether / dichloromethane eluent with a volume ratio of 10:1, and remove the solvent by rotary evaporation to obtain The fluorescent probe has a structural formula as shown in formula I:

[0037]

[0038] (2) Qualitative and quantitative detection of ozone

[0039]For gaseous ozone samples to be tested, use a puncher to make organic filter membranes into small discs of uniform specifications, soak the filter discs with fluorescent probes dissolved in acetonitrile solvent, take them out immediately, and dry them with qualitative filter pape...

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Abstract

The invention belongs to the field of technologies for detecting and analyzing ozone, and particularly relates to a fluorescence probe for visually detecting ozone and a method for preparing the fluorescence probe. 2-(2-hydroxyphenyl) benzothiazole is used as a fluorophore for the fluorescence probe, 4-bromine-1-butene is used as a recognition group, bright green fluorescence can be emitted by thefluorophore in a solid state, the fluorescence is quenched after the fluorophore and the recognition group are connected with each other, the fluorescence probe capable of emitting weak blue light isgenerated, and the fluorophore capable of emitting the bright green fluorescence can be restored after reaction is carried out on the fluorescence probe and the ozone. The fluorescence probe and themethod have the advantages that the liquid-state and gas-state ozone can be visually, qualitatively and quantitatively detected by the fluorescence probe, and the fluorescence probe is good in selectivity and high in anti-interference performance.

Description

technical field [0001] The invention belongs to the technical field of ozone detection and analysis, in particular to a fluorescent probe for visual detection of ozone and a preparation method thereof. Background technique [0002] The reduction of stratospheric ozone makes a large amount of ultraviolet radiation, which is easy to induce skin cancer, cataract and other diseases, and also damages plants and aquatic organisms; the concentration of tropospheric ozone caused by industrial development, etc., excessive ozone will cause intracellular dysfunction and cause various diseases Such as lung cancer and even death. Therefore, the efficient qualitative and quantitative detection of ozone is of great significance to the current research in the fields of biology and environmental protection. [0003] At present, the detection methods of ozone mainly include: ultraviolet-visible absorptiometry, high performance liquid chromatography, chemiluminescence, electron spin resonance...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D277/66C09K11/06G01N21/64
CPCC07D277/66C09K11/06C09K2211/1007C09K2211/1037G01N21/6428G01N2021/6432
Inventor 王素华余龙余欢张奎岳季董韦汝
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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