Molecular sensor capable of singly and selectively identifying picric acid molecules and synthesis and application of molecular sensor

A technology of molecular sensor and picric acid, which is applied in the direction of chemical instruments and methods, instruments, analytical materials, etc., can solve the problems of easily polluted soil and groundwater, and the reduction of biological treatment effect

Pending Publication Date: 2020-02-14
NORTHWEST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

And when the concentration of PA in water is more than 20~30mg / L, the biological treatment effect will be reduced, so when PA is exposed to water, it is easy to pollute the soil and groundwater

Method used

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  • Molecular sensor capable of singly and selectively identifying picric acid molecules and synthesis and application of molecular sensor
  • Molecular sensor capable of singly and selectively identifying picric acid molecules and synthesis and application of molecular sensor
  • Molecular sensor capable of singly and selectively identifying picric acid molecules and synthesis and application of molecular sensor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1, molecular sensor Q

[0031] Weigh 0.19 g (1 mol) of 1,8-naphthalene dioic anhydride and 0.345 g (3.0 mol) of hexamethylenediamine, add them into 60 ml of ethanol solvent, stir to dissolve completely, and react at 85°C for 36 h. After the reaction Cooling precipitated a white solid, suction filtered, and rinsed with ethanol to obtain 0.25 naphthalimide derivatives with a yield of 83%;

[0032] Weigh 1.18 g (4 mol) of naphthalimide derivatives, 0.26 g (1 mol) of trimesoyl chloride, add them to 65 ml of dichloromethane, and react at room temperature for 48 h; after the reaction, a white solid precipitates out and is suction filtered , rinsed with hot ethanol, the product obtained is the molecular sensor Q, and the yield is 63%.

Embodiment 2

[0033] Example 2. Molecular sensor Q recognizes PA

[0034] Pipette 2 ml of supramolecular sensor molecule Q in DMF-H 2 O solution (C Q =1×10 -5 M, V DMF : V 水 = 1:9) In a series of colorimetric tubes, add the DMF solutions of picric acid, hydrochloric acid, acetic acid, n-butyric acid, salicylic acid, hippuric acid, phenylhydrazine-4-sulfonic acid and p-hydroxybenzoic acid respectively (C =0.01M), if the DMF-H of the sensor molecule 2 The fluorescence of the O solution is obviously quenched, which means that the solution of picric acid molecules is added, and if the fluorescence intensity of the sensor molecules does not change, it means that the solution of picric acid molecules is not added.

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Abstract

The invention discloses a synthesis method for synthesizing a molecular sensor capable of singly and selectively identifying picric acid molecules, wherein the synthesis method comprises the steps: carrying out a reaction on 1,8-naphthalic anhydride and hexamethylenediamine as substrates in an ethanol solvent to obtain a naphthalimide derivative; taking trimesoyl chloride and the naphthalimide derivative as substrates, and carrying out a reaction in dichloromethane to obtain the target molecular sensor. DMF solutions of hydrochloric acid, acetic acid, n-butyric acid, salicylic acid, hippuric acid, phenylhydrazine-4-sulfonic acid and p-hydroxybenzoic acid are respectively added into a DMF-H2O solution of the molecular sensor, and only picric acid is added to quench the fluorescence of the DMF-H2O solution of the molecular sensor, so that the single selective identification performance on picric acid is realized, and the detection is quick and sensitive.

Description

technical field [0001] The present invention relates to a molecular sensor capable of single and selective recognition of picric acid molecules and a synthesis method thereof; the present invention also relates to the molecular sensor in DMF-H 2 The application of fluorescent recognition of picric acid in O solution belongs to the field of chemical synthesis and the field of molecular detection. Background technique [0002] Picric acid, chemical name: 2,4,6-trinitrophenol, is a kind of explosives, abbreviated as TNP, PA, pure substance is slightly yellow crystal at room temperature. Picric acid is a trinitro substitute of phenol, which is strongly acidic due to the electron-withdrawing effect of nitro, and is named for its strong bitter taste. Picric acid is insoluble in carbon tetrachloride, slightly soluble in carbon disulfide, soluble in hot water, ethanol, ether, easily soluble in acetone, benzene and other organic solvents. However, when the human body is exposed to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D221/14C09K11/06G01N21/64
CPCC07D221/14C09K11/06G01N21/6428G01N2021/6432C09K2211/1029C09K2211/1007
Inventor 林奇李颖洁关晓文何俊霞魏太保张有明姚虹
Owner NORTHWEST NORMAL UNIVERSITY
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