Novel fluorescence probe for specific detection of mercury ions, and preparation method and application thereof

A fluorescent probe and mercury ion technology, applied in fluorescence/phosphorescence, organic chemistry, material excitation analysis, etc., can solve the problems of difficult large-scale application, low sensitivity, complicated operation, etc., and achieve easy synthesis, high yield, The effect of easy access to materials

Inactive Publication Date: 2013-11-27
ANHUI UNIVERSITY OF ARCHITECTURE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with traditional detection methods, these methods are accurate and reliable, but their sensitivity is not high, the operation is complicated, and the cost is high, so it is difficult to apply on a large scale.

Method used

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  • Novel fluorescence probe for specific detection of mercury ions, and preparation method and application thereof
  • Novel fluorescence probe for specific detection of mercury ions, and preparation method and application thereof
  • Novel fluorescence probe for specific detection of mercury ions, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Weigh rhodamine B (0.5 g, 1 mmol) into a ground-neck Erlenmeyer flask, add 40 mL of methanol, drop in (0.2 mL, 5 mmol) of hydrazine hydrate, install a reflux device, and heat to reflux at 80°C for 8 hours. Until the red color disappears, remove the reflux condenser, heat slightly to evaporate the solvent, wait until a dark oily liquid appears, cool, add a little double distilled water, extract with 40mL dichloromethane several times, combine the organic phases, and wash with anhydrous sulfuric acid Dry over sodium, and evaporate the solvent under reduced pressure to obtain a solid.

[0025] Add 0.25 g (0.5 mmol) N-amino-rhodamine amide to the Erlenmeyer flask, add 1 mmol benzaldehyde solution, mix well, add dropwise 30ml methanol solution, heat and reflux at 100°C for 10 minutes, evaporate under reduced pressure Solvent to obtain mercury ion detection probe compound.

[0026] Add 20 μL, 40 μL, 80 μL, 160 μL, 320 μL, 640 μL, 2.8 mol / L mercury sulfate solution to 2ml (0....

Embodiment 2

[0029] Weigh rhodamine B (0.5 g, 1 mmol) into a ground-neck Erlenmeyer flask, add 40 mL of methanol, drop in (0.8 mL, 20 mmol) of hydrazine hydrate, install a reflux device, and continue heating to reflux at 80 °C 10 hours until the red color disappears, remove the reflux condenser, heat slightly to evaporate the solvent, wait until a dark oily liquid appears, cool, add a little double distilled water, extract with 40mL dichloromethane several times, combine the organic phases, and remove Dry over sodium sulfate and distill off the solvent under reduced pressure to obtain a solid.

[0030] Add 0.38 g (0.75 mmol) N-amino-rhodamine amide to the Erlenmeyer flask, add 1 mmol benzaldehyde solution to mix, add 30 mL of methanol, heat and reflux at 100°C for 10 minutes, evaporate the solvent under reduced pressure to obtain mercury Ion detection probe compounds.

[0031] Add 20 μL, 40 μL, 80 μL, 160 μL, 320 μL, 640 μL, 2.8 mol / L mercury sulfate solution to 2ml (0.5 μmol) fluorescent...

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PUM

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Abstract

The invention discloses a novel fluorescence probe for specific detection of mercury ions. The novel fluorescence probe has high recognition selectivity for mercury ions, and has the advantages of easy synthesis, accessible materials, high yield and the like. The prepared fluorescence probe is a non-fluorescence substance, and can detect the mercury ion concentration on the basis of fluorescence enhancement and chroma enhancement.

Description

technical field [0001] The invention belongs to the field of organic molecular fluorescent probes, and in particular relates to a novel fluorescent probe for detecting mercury ions based on Schiff base reaction and its preparation method and application. Background technique [0002] Mercury is a toxic silver-white monovalent and divalent heavy metal element. It is the only liquid metal at room temperature, and it exists freely in nature and exists in cinnabar, calomel and several other minerals. Mercury is often produced by roasting cinnabar and condensing mercury vapor. It is mainly used in scientific instruments: electrical instruments, control equipment, thermometers, barometers, mercury boilers, mercury pumps and mercury vapor lamps, commonly known as "mercury". The harm caused by its high toxicity to humans and the environment has attracted global attention. Mercury is widely distributed, and elemental mercury and ionic mercury can be converted into methylmercury by ba...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D493/10G01N21/64
Inventor 唐建设黄显怀项丽赵峰潘发康
Owner ANHUI UNIVERSITY OF ARCHITECTURE
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