Aggregate induced effect-based mercury ion fluorescence probe as well as preparation method and application thereof

An aggregation-induced effect, fluorescent probe technology, applied in the field of detection, can solve the problems of poor anti-interference ability, low sensitivity, inconvenient portability, etc., and achieve the effects of low detection limit, high sensitivity and easy operation.

Inactive Publication Date: 2018-11-16
UNIV OF SHANGHAI FOR SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The present invention aims to provide a method for detecting mercury ion content in natural water bodies with simple operation, high sensitivity, strong specificity, good anti-interference ability and high detection efficiency, so as to solve the problems of expensive equipment and complicated operation in classical detection methods , low sensitivity, poor anti-interference ability, inconvenient to carry, etc.

Method used

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  • Aggregate induced effect-based mercury ion fluorescence probe as well as preparation method and application thereof
  • Aggregate induced effect-based mercury ion fluorescence probe as well as preparation method and application thereof
  • Aggregate induced effect-based mercury ion fluorescence probe as well as preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0046] 1. Synthesis of fluorescent probe molecule 1

[0047] Weigh 9-anthracenecarbaldehyde (1g, 4.85mmol) and ethanedithiol (0.5ml, 5.97mmol) and dissolve in chloroform (25mL), add iodine pellets (0.14g, 0.55mmol). After stirring at room temperature for 15 minutes, Na 2S 2 o 3 (0.1mol·L-1, 25 mL) and NaOH (10%, 25 mL) to quench the reaction. After extraction, suction filtration, and spin-drying, a yellow solid is obtained, which is the fluorescent probe molecule 1, and its molecular formula is C 29 h 20 S 2 .

[0048] 2. Preparation of fluorescent probe molecule 1 solution

[0049] Weigh the fluorescent probe molecule 1 and prepare it with N,N-dimethylimide (DMF) to a concentration of 1×10 -2 mol L -1 10 mL of the standard solution; water was added to the resulting solution to prepare different fluorescent probe molecule 1 fluorescent molecular probe solutions with water volume percentages of 70%, 80%, 90%, and 99%, and the fluorescence emission intensity was observe...

Embodiment 2

[0056] 1. Synthesis of Fluorescent Probe Molecule 2

[0057] Weigh 4-(1,2,2-tristyryl)benzaldehyde (1.0g, 2.77mol) and ethanedithiol (0.3mL, 3.33mmol) and dissolve in chloroform (25mL), add iodine particles ( 0.14 g, 0.55 mmol). After stirring at room temperature for 15 min, Na2S2O3 (0.1mol·L -1 , 25 mL) and NaOH (10%, 25 mL) to quench the reaction. The reaction solution was extracted with chloroform (30mLx3), dried over anhydrous sodium sulfate, filtered with suction, and evaporated to dryness. Column chromatography with dichloromethane / petroleum ether (V:V=3:1) gave a white solid. Obtain fluorescent probe molecule 2, its molecular formula is C 17 h 14 S 2 .

[0058] 2. Preparation of fluorescent probe molecule 2 solution

[0059] Weigh the fluorescent probe molecule 2 and prepare it with dimethyl sulfoxide (DMSO) to a concentration of 1×10 -3 mol L -1 25mL of the standard solution, prepare different fluorescent probe molecules 2 fluorescent molecular probe solution...

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Abstract

The invention provides an aggregate induced effect-based mercury ion fluorescence probe. The aggregate induced effect-based mercury ion fluorescence probe comprises two parts: a fluorophore which contains an aldehyde group structure and has the aggregate induced effect and a disulfydryl organic compound B. A preparation method comprises the following steps: preparing mercaptal-containing fluorescence molecules having the aggregate induced effect; dispersing the fluorescence molecules in a mixed solvent (a volume ratio of water to an organic solvent is greater than 80 percent) of water and N,N-dimethyl formamide or water and dimethyl sulfoxide, thus forming a fluorescence probe system. The aggregate induced effect-based mercury ion fluorescence probe provided by the invention is utilized for detecting mercury ions in water and has many advantages of fast fluorescence response effect, strong selectivity, high sensitivity, strong antijamming capability, low detection limit, simpleness inoperation and the like, the detection limit is up to 1*10<-8>mol.L<-1>, and online detection conditions on water quality of drinking water are met.

Description

technical field [0001] The invention belongs to the field of detection, and in particular relates to a fluorescent probe and a dispersion liquid system, in particular to a mercury ion fluorescent probe based on the aggregation-inducing effect and its dispersion liquid system, and its performance in detecting mercury ions in water. application. Background technique [0002] Mercury, because of its volatility, mobility, bioaccumulation and neurotoxicity, poses a huge threat to human health and the entire ecological environment. Therefore, being able to effectively detect mercury ions is of great significance to the fields of chemistry, medicine and environmental science. [0003] The traditional methods for detecting mercury ions mainly include instrument analysis and fluorescent probe method. Among them, instrumental analysis methods include inductively coupled plasma mass spectrometry (ICP-MS), atomic absorption spectrometry (AAS), spectrophotometry, electrochemical method...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D339/06C09K11/06G01N21/64
CPCC07D339/06C09K11/06C09K2211/1007C09K2211/1011C09K2211/1092G01N21/643G01N2021/6417G01N2021/6443
Inventor 马杰张翠红张嫚嫚肖瑶闫录亮王庆洋郑为国张淑平
Owner UNIV OF SHANGHAI FOR SCI & TECH
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