Preparation and application of fluorescence ion imprinting probe

A fluorescent ion and fluorescent probe technology, applied in the field of fluorescent ion imprinted probe preparation, can solve the problems of limited application, inability to use complex system detection, low selectivity, etc., and achieve high sensitivity, excellent recognition performance, and improved sensitivity. Effect

Inactive Publication Date: 2015-01-21
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these techniques are not highly selective and require harsh detection environments
Cannot be applied to the detection of complex systems
thus limiting its application

Method used

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  • Preparation and application of fluorescence ion imprinting probe
  • Preparation and application of fluorescence ion imprinting probe
  • Preparation and application of fluorescence ion imprinting probe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] (1) EuCl 3 0.5 mmol, 0.75 mmol of phen, and 0.5 mmol of TTA were dissolved in 100 mL of ethanol with magnetic stirring, and concentrated ammonia water was added dropwise after five minutes. Adjust pH=7, the solution becomes turbid. Continue stirring for 2 h, centrifuge, and wash three times with ethanol. get Dy( ) complexes.

[0041] (2) Eu( in step (1) ) complex 100 mg was dissolved in 5 mL DMF. Form solution A with a mixed solution of 25 ml ethanol and 1 mL TEOS. Then 1 mL of ammonia water was added to the mixed solution of 14 ml of ethanol and 5 ml of distilled water to form solution B, then solution A was quickly poured into solution B, and magnetically stirred for 2 h. centrifuged and washed three times to obtain Eu(III)SiO 2 .

[0042] (3) Eu(III)SiO obtained in (2) 2 Disperse 0.1 g in 30 mL of acetonitrile, then add 0.35 mmol methacrylic acid (MAA), 1.50 mL ethylene glycol dimethacrylate (EGDMA), 0.10 mmol Cu 2+ . N 2 Under protection, self-assem...

Embodiment 2

[0049] (1) EuCl 3 0.5 mmol, phen 0.5 mmol, and TTA 0.5 mmol were dissolved in 100 mL of ethanol with magnetic stirring, and concentrated ammonia water was added dropwise after five minutes. Adjust pH=7, the solution becomes turbid. Continue stirring for 2 h, centrifuge, and wash three times with ethanol. get Dy( ) complexes.

[0050] (2) Eu( ) complex 20 mg was dissolved in 1 mL DMF. Form solution A with a mixed solution of 5 ml ethanol and 0.19 mL TEOS. Then 0.2 mL of ammonia water was added to the mixed solution of 4.2 ml of ethanol and 1.5 ml of distilled water to form solution B, then solution A was quickly poured into solution B, and magnetically stirred for 2 h. centrifuged and washed three times to obtain Eu(III)SiO 2 .

[0051] (3) Disperse 0.12 g of the fluorescent material obtained in (2) in 30 mL of acetonitrile, then add 0.50 mmol methacrylic acid (MAA), 1.55 mL ethylene glycol dimethacrylate (EGDMA), 0.12 mmol Cu 2+ . N 2 Under protection, self-assem...

Embodiment 3

[0055] (1) EuCl 3 0.5 mmol, 0.5 mmol of phen, and 0.5 mmol of TTA were dissolved in 100 mL of ethanol with magnetic stirring, and concentrated ammonia water was added dropwise after five minutes. Adjust pH=7, the solution becomes turbid. Continue stirring for 2 h, centrifuge, and wash three times with ethanol. get Dy( ) complexes.

[0056] (2) Eu( in step (1) ) complex 50 mg was dissolved in 2 mL DMF. The mixed solution with 10ml ethanol and 0.5 mL TEOS forms solution A. Then 0.4 mL of ammonia water was added to the mixed solution of 7 ml of ethanol and 2.5 ml of distilled water to form solution B, then solution A was quickly poured into solution B, and magnetically stirred for 2 h. centrifuged and washed three times to obtain Eu(III)SiO 2 .

[0057] (3) Disperse 0.12 g of the fluorescent material obtained in (2) in 30 mL of acetonitrile, then add 0.60 mmol methacrylic acid (MAA), 1.70 mL ethylene glycol dimethacrylate (EGDMA), 0.15 mmol Cu 2+ . N 2 Under protect...

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Abstract

The invention relates to a preparation method and application of a fluorescence ion imprinting probe and in particular relates to a method for preparing a fluorescence ion imprinting probe for detecting Cu<2+> as well as application of the fluorescence ion imprinting probe to detecting trace Cu<2+> in water, belonging to the technical fields of material preparation and detection. The invention particularly discloses a method for preparing an imprinting fluorescence probe by taking a metal europium ion complex as a luminous group, a bivalent Cu ion as a template molecule, methacrylic acid (MAA) as a functional monomer, ethylene glycol dimethacrylate (EGDMA) as a cross-linking agent and azodiisobutyronitrile (AIBN) as an initiator. The trace analysis detection experiment and selective experiment are used for researching the selective analysis performance of the prepared fluorescence probe. The result proves that the obtained fluorescence imprinting probe has excellent Cu ion identification performance.

Description

technical field [0001] The invention relates to a preparation method and application of a fluorescent ion imprinted probe, in particular to a method for detecting Cu 2+ The preparation method of the fluorescent imprinting probe, and be applied to detect the Cu of trace amount in water 2+ , belonging to the technical field of material preparation and detection. Background technique [0002] With the continuous development of electronic technology, the global demand for copper metal is also growing steadily. Environmental pollution caused by improper disposal of smelting and mining residues has attracted people's attention in recent years. With the rapid increase of industrial sewage discharge, it has become an indisputable fact that Cu ion pollution in various water environments has become increasingly serious. It has been confirmed that Cu in human 2+ Excessive enrichment can cause damage to the nervous system and urinary system. cause Alzheimer's disease. The U.S. Env...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/06C08F222/14C08F2/44C08J9/28C09K11/06C09K11/02G01N21/64
Inventor 郑旭东李春香潘建明戴江栋高林卫潇
Owner JIANGSU UNIV
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