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Method for high selectivity recognition of acetate ions by applying perimidine onium anion receptor

A technology with high selectivity for acetate ions, which is applied in the field of recognizing acetate ions and using pyridinium anion receptors to recognize acetate ions with high selectivity, achieving the effect of simple operation, high selectivity recognition and high selectivity

Inactive Publication Date: 2012-10-24
EAST CHINA NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There have been many reports on urea, thiourea, amide, indole and other groups as hydrogen bond donors to selectively recognize acetate anion acceptors, and related use Pyridinium has not been reported as the anion acceptor of hydrogen bond donor, and the present invention utilizes Pyridinium salts are anion receptors with high selectivity for acetate ion recognition

Method used

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  • Method for high selectivity recognition of acetate ions by applying perimidine onium anion receptor
  • Method for high selectivity recognition of acetate ions by applying perimidine onium anion receptor
  • Method for high selectivity recognition of acetate ions by applying perimidine onium anion receptor

Examples

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Effect test

Embodiment example 1

[0024] Pipette 1mL respectively Dimethylsulfoxide (DMSO) solution of pyridinium anion acceptor 1 (2.0×10 -6 mol / L) in a series of 10mL volumetric flasks, respectively add the sample to be tested: 0.5mL of tetrabutyl DMSO solution of ammonium salt (2.0×10 -5 mol / L), diluted to the mark with DMSO, at this time The pyridinium anion acceptor concentration was 2.0 x 10 -7 mol / L, the anion concentration is 1.0×10 -6 mol / L, that is, the concentration of each anion is 5 times the concentration of the acceptor, mixed well and left overnight, the concentration is 2.0×10 -7 The mol / L DMSO solution of pure acceptor was used as a control, and the fluorescence emission spectra of each solution were measured at 25°C. Comparing the changes in fluorescence intensity before and after adding various anion acceptors, the experimental results show that: after adding acetate ions, The fluorescence emission spectrum of the pyridinium anion acceptor at 402nm was significantly enhanced, and th...

Embodiment 2

[0026] Pipette 1mL respectively DMSO solution of pyridinium anion acceptor 1 (6.0×10 -6 mol / L) in a series of 10mL volumetric flasks, respectively add the sample to be tested: 0.5mL of tetrabutyl DMSO solution of ammonium salt (6.0×10 -5 mol / L), diluted to the mark with DMSO, at this time The pyridinium anion acceptor concentration was 6.0 x 10 -7 mol / L, the anion concentration is 3.0×10 -6 mol / L, that is, the concentration of each anion is 5 times the concentration of the acceptor, mixed well and left overnight, the concentration is 6.0×10 -7 The mol / L DMSO solution of pure acceptor was used as a control, and the fluorescence emission spectra of each solution were measured at 25°C. Comparing the changes in fluorescence intensity before and after adding various anions, the experimental results show that: after adding acetate ions, The fluorescence emission spectrum of the pyridinium anion acceptor at 402nm was significantly enhanced, and the fluorescence intensity inc...

Embodiment 3

[0028] Pipette 1mL respectively DMSO solution of pyridinium anion acceptor 1 (6.0×10 -5 mol / L) in a series of 10mL volumetric flasks, respectively add the sample to be tested: 0.5mL of tetrabutyl DMSO solution of ammonium salt (6.0×10 -4 mol / L), diluted to the mark with DMSO, at this time The pyridinium anion acceptor concentration was 6.0 x 10 -6 mol / L, the anion concentration is 3.0×10 -5 mol / L, that is, the concentration of each anion is 5 times the concentration of the acceptor, mixed well and left overnight, the concentration is 6.0×10 -6 The mol / L DMSO solution of pure acceptor was used as a control, and the fluorescence emission spectra of each solution were measured at 25°C. Comparing the changes in fluorescence intensity before and after adding various anions, the experimental results show that, if figure 1 As shown, after adding acetate ion, The fluorescence emission spectrum of the pyridinium anion acceptor at 402nm was significantly enhanced, and the fluo...

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Abstract

The invention provides an application of a perimidine onium anion receptor in high selectivity recognition of acetate ions. According to the method, a sample requiring detection is added to a DMSO solution of a perimidine onium anion receptor, if the sample contains acetate ions, a fluorescence emission spectrum of the perimidine onium anion receptor is significantly enhanced so as to realize high selectivity recognition of the acetate ions.

Description

technical field [0001] The invention belongs to the technical field of detection, relates to a method for identifying acetate ions, and in particular to an application A method for highly selective recognition of acetate ions by pyridinium anion receptors. Background technique [0002] Molecular recognition essentially refers to the process in which the host molecule (receptor) selectively binds to the guest molecule (substrate) and produces a specific function. Molecular recognition includes recognition of cations, recognition of neutral molecules, and recognition of anions. Because anions play an important role in the fields of chemistry, biology, medicine, and environmental science, the design and synthesis of artificial receptors that can selectively recognize anions have received extensive attention from chemists (Evans LS, Gale P A, Light M E, Quesada R. Anion binding vs. deprotonation in colorimetric pyrrolylamidothiourea based anion sensors. Chem. Commun. 2006, 96...

Claims

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Application Information

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IPC IPC(8): G01N21/64
Inventor 高国华封美云
Owner EAST CHINA NORMAL UNIV
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