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Receptor compound for colorimetric detection of fluorine ions and preparation method and application thereof

A fluoride ion and compound technology, applied in the field of anion detection, can solve problems such as inconvenient detection methods, and achieve the effects of fast detection, simple preparation method and convenient operation

Pending Publication Date: 2020-10-30
HEXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an acceptor compound (2-hydroxy-4-nitrophenylureapropyl triethoxysilane) for colorimetric detection of fluoride ions, so as to solve the problem of inconvenient detection methods

Method used

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  • Receptor compound for colorimetric detection of fluorine ions and preparation method and application thereof
  • Receptor compound for colorimetric detection of fluorine ions and preparation method and application thereof
  • Receptor compound for colorimetric detection of fluorine ions and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0030] 1. Synthesis of Receptor Compounds

[0031] Add 2-hydroxy-4-nitroaniline and isocyanatopropyltriethoxysilane to a 50mL round-bottomed flask, and use 30ml acetone as the reaction medium to make isocyanatopropyltriethoxysilane and 2- Hydroxy-4-nitroaniline in a molar ratio of 1:1.2, at 40 degrees Celsius, magnetic stirring, and react for 4 hours. After cooling, pour the drug into an ice-water bath to crystallize, and a yellow solid is precipitated. The acceptor compound 2-hydroxy- 4-Nitrophenylureidopropyltriethoxysilane.

[0032] 2. Anion Recognition Experiments for Receptor Compounds

[0033] Pipette 0.5 mL of acceptor in DMSO (2 x 10 -4 mol / L) in a series of 10 mL colorimetric tubes. add F separately 一 , Cl 一 , Br 一 , I 一 , CH 3 COO 一 , HSO 4 一 , H 2 PO 4 一 , ClO 4 一 0.5mL of DMSO solution of tetrabutylamine salt of anion (0.01mol / L), diluted with DMSO to 5mL scale, so that the concentration of various anions is 50 times of the acceptor concentration, m...

Embodiment 2

[0052] Add 2-hydroxy-4-nitroaniline and isocyanatopropyltriethoxysilane to a 50mL round-bottomed flask, and use 30ml acetone as the reaction medium to make isocyanatopropyltriethoxysilane and 2- Hydroxy-4-nitroaniline in a molar ratio of 1:1.8, at 30 degrees Celsius, magnetic stirring, and react for 4 hours. After cooling, pour the drug into an ice-water bath to crystallize, and a yellow solid is precipitated. The acceptor compound 2-hydroxy- 4-Nitrophenylureidopropyltriethoxysilane.

Embodiment 3

[0054] Add 2-hydroxy-4-nitroaniline and isocyanatopropyltriethoxysilane to a 50mL round-bottomed flask, and use 30ml acetone as the reaction medium to make isocyanatopropyltriethoxysilane and 2- Hydroxy-4-nitroaniline in a molar ratio of 1:1.5, at 50 degrees Celsius, magnetic stirring, and react for 4 hours. After cooling, pour the drug into an ice-water bath to crystallize, and a yellow solid is precipitated. Suction filtration to obtain the acceptor compound 2-hydroxy- 4-Nitrophenylureidopropyltriethoxysilane.

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Abstract

The invention discloses a receptor compound for colorimetric detection of fluorine ions as well as a preparation method and application of the receptor compound, belongs to the technical field of anion detection, and solves the problem that an existing detection method is relatively inconvenient. The receptor compound disclosed by the invention is 2-hydroxy-4-nitrophenyl urea propyl triethoxy silane. The preparation method comprises the following steps: taking acetone as a reaction medium, magnetically stirring isocyanatopropyltriethoxysilane and 2-hydroxy-4-nitroaniline in a molar ratio of 1:(1.1-1.8) at 30-80 DEG C, reacting for 3-5 hours, cooling, pouring a medicine into an ice-water bath, crystallizing, separating out a yellow solid, and carrying out suction filtration, thereby obtaining the product. The receptor compound can be used for colorimetric detection of the fluorine ions. According to the invention, a 2-hydroxy-4-nitrobenzene group is used as a signal report group, so that the receptor compound has the capability of colorimetric recognition; urea groups are adopted as recognition sites, so that the compound can be better combined with the fluorine ions and can be used as a receptor compound for detecting and recognizing the fluorine ions.

Description

technical field [0001] The invention belongs to the technical field of anion detection, and in particular relates to an acceptor compound used for colorimetric detection of fluoride ions and a preparation method and application thereof. Background technique [0002] With the rapid development of supramolecular chemistry, the recognition anions of acceptor compounds play an important role in supramolecular chemistry, and anions have considerable application value in life science, chemistry, pharmacy, catalytic chemistry, environmental chemistry and other scientific fields , especially the highly selective anion-recognition acceptor compounds have received extensive attention. However, there are not many acceptor compounds that can be applied to anion recognition. Compared with cationic and neutral molecules, the development of non-covalent anion coordination chemistry is slow. Therefore, the design of synthetic anion sensors has received more and more attention from research...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F7/18G01N21/78
CPCC07F7/1804C07F7/1892G01N21/78
Inventor 曹成李守博籍向东
Owner HEXI UNIV