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A colorimetric fluorescent probe for ultrasensitive analysis of mercury ions and preparation method thereof

A mercury ion and preparation technology, which is applied in analytical materials, fluorescence/phosphorescence, material excitation analysis, etc., can solve the problems of insufficient response speed, complex synthesis, and insufficient selectivity, and achieves good stability, simple synthesis, and high efficiency. The effect of promoting the application

Inactive Publication Date: 2019-04-12
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still some problems with the currently reported colorimetric and fluorescent probes, including insufficient selectivity, insufficient response speed, and complex synthesis.

Method used

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  • A colorimetric fluorescent probe for ultrasensitive analysis of mercury ions and preparation method thereof
  • A colorimetric fluorescent probe for ultrasensitive analysis of mercury ions and preparation method thereof
  • A colorimetric fluorescent probe for ultrasensitive analysis of mercury ions and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0032]

[0033] (Scheme 1) Dissolve 387mg (1mmol) of rhodamine B hybridized fluorescein in 15mL of dichloromethane, then add 337mg (2mmol) of phenyl thiochloroformate and stir for 6 hours at room temperature, and then use a rotary evaporator for rotary evaporation. A crude product is obtained. If a purer product is to be obtained, it can be recrystallized in a mixed system of dichloromethane and petroleum ether (eg v / v, 1:5) to obtain a pure product. Obtained 364 mg of red pure product with a yield of 64%.

[0034] (Scheme 2) Dissolve 387mg (1mmol) of rhodamine B hybridized fluorescein in 15mL of dichloromethane, then add 252.7mg (1.5mmol) of phenyl thiochloroformate and stir for 6 h at room temperature, then use a rotary evaporator to carry out Rotary evaporation to obtain crude product. If a purer product is to be obtained, it can be recrystallized in a mixed system of dichloromethane and petroleum ether (eg v / v, 1:5) to obtain a pure product. Obtained 297 mg of red pu...

Embodiment 2

[0040] figure 1 is the probe (5μM) added with Hg 2+ Fluorescence spectra before and after (10 μM). It can be clearly seen from the figure that the addition of mercury ions leads to enhanced fluorescence intensity.

Embodiment 3

[0042] Figure 2a are different concentrations of Hg 2+ (0-0.8μM) on the probe (5μM) fluorescence spectrum; Figure 2b is different concentrations of Hg 2+ (0-10μM) on the probe (10μM) UV absorption spectrum.

[0043] Depend on Figure 2a It can be seen that with the Hg in the probe solution 2+ As the concentration increases, the fluorescence intensity gradually increases, and at (0-0.8μM)Hg 2+ Concentration range, Hg 2+ There is a good linear relationship between the concentration and the fluorescence intensity. This proves that with the help of this fluorescent probe, Hg 2+ Quantitative analysis with high sensitivity. Hg in drinking water standard in my country 2+ The standard limit is 0.001 mg / L. Therefore, the probe of the present invention can more accurately determine the Hg in the sample to be tested. 2+ content. Furthermore, with Hg 2+ As the concentration increases, the absorption spectrum gradually increases, which indicates that the colorimetric determinat...

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PUM

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Abstract

The invention relates to a colorimetric fluorescent probe for supersensitive analysis of mercury ions and a preparation method thereof. Concretely, the probe is a thiocarbonic acid phenyl ester compound, and the compound can be used as the mercury ion colorimetric fluorescent probe for detection of mercury ions. The probe can be used for realizing at least one of following technical effects: identification of mercury ions with high selectivity; rapid response of mercury ions; high sensitivity analysis of mercury ions; stable property, and long-term preservation and usage; high anti-interference capability.

Description

technical field [0001] The invention relates to a thiophenylcarbonate compound used as a fluorescent probe for mercury ions, which can rapidly and sensitively identify mercury ions with high selectivity, or it can measure the concentration of mercury ions in a sample. Background technique [0002] Mercury is a metal element with severe physiological toxicity. Due to its persistence, easy migration and high bioaccumulation, it has become one of the most concerned environmental pollutants. Inorganic mercury ions in the environment can be converted by organisms into highly toxic methylmercury under certain conditions. Inorganic mercury mainly affects the kidneys, while methylmercury mainly damages the nervous system after entering the human body, especially the central nervous system. Both can be highly enriched in biological tissues through the food chain, thus causing great harm to humans and nature. Mercury poisoning will have an extremely bad impact on the whole society. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D493/10C09K11/06G01N21/64
CPCC07D493/10C09K11/06C09K2211/1088G01N21/6428
Inventor 段庆霞张萌柳彩云王作凯朱宝存杜斌
Owner UNIV OF JINAN