Method for detecting phosphate ions based on dual-emission europium metal organic framework material

A metal-organic framework and phosphate ion technology, which is applied in the direction of luminescent materials, analytical materials, material excitation analysis, etc., can solve the problems of ineffective implementation of analysis and detection, expensive, lengthy sample pretreatment, etc., and achieve good application value and detection The effect of low limit and visible detection process
CN108535231AInactive Publication Date: 2018-09-14TIANJIN NORMAL UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
TIANJIN NORMAL UNIVERSITY
Publication Date
2018-09-14
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a method for detecting phosphate ions based on a dual-emission europium metal organic framework material. The dual-emission lanthanide europium metal organic framework material is used as a ratio-type fluorescence probe for being applied to high-selectivity high-sensibility detection of the phosphate ions. The chemical general formula of the adopted dual-emission lanthanide europium metal organic framework material is [Eu2(L)2(H20)2(DMF)2], wherein a Eu2O2 cluster is used as an inorganic node, a rigid asymmetric tricarboxylic acid ligand terphenyl-3,4'',5-tricarboxylicacid (H3L) is used as an organic bridging ligand, and preparation is successfully conducted by means of a simple and convenient one-pot solvothermal technology. The invention further discloses application of the metal organic framework material in the aspect of selectively detecting phosphate anions. In a detecting process, along with increase of the content of the added phosphate anions, obviouscolor change from pink to purple which is easily observed with naked eyes is presented under radiation of an ultraviolet lamp, and thus the detecting process becomes more convenient and practical.
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Description

[0001] This application is funded by the General Project 21375095 of the National Natural Science Foundation of China. technical field

[0002] The invention belongs to the field of metal organic framework material preparation and fluorescence sensing, and in particular relates to a method for detecting phosphate ions based on double emission europium metal organic framework material. Background technique

[0003] Metal-organic frameworks (MOFs), as a functional porous coordination polymer material self-assembled by inorganic metal ions or metal clusters and multi-dentate organic ligands, have tunable channels Excellent properties such as structure, huge specific surface area, controllable surface properties, good thermal and chemical stability, and abundant unsaturated sites have aroused great research interest. Among many metal-organic frameworks, lanthanide metal-organic frameworks (Ln-MOFs), which are coordinated by lanthanide ions and bridging organic ligands, are due t...

Claims

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