Europium metal-organic framework compound with fluorescent recognition function and preparation method and application

A metal-organic framework and fluorescence recognition technology, applied in the field of chemistry, to achieve the effects of good luminescence, good selectivity, and high product purity

Inactive Publication Date: 2016-04-20
NORTHWEST UNIV(CN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

By designing various organic ligands to react with rare earth metal ions, scientists have prepared some rare earth metal organic framework materials with fluorescence sensing function for metal ions. 3+ ion or Cr 2 o 7 2- The fluorescent sensing function of ions, and there is only one case of materials that can simultaneously have the fluorescent sensing function for these two ions

Method used

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  • Europium metal-organic framework compound with fluorescent recognition function and preparation method and application
  • Europium metal-organic framework compound with fluorescent recognition function and preparation method and application
  • Europium metal-organic framework compound with fluorescent recognition function and preparation method and application

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specific Embodiment 1

[0036] A kind of europium metal organic framework compound with fluorescence recognition function, its chemical formula is [Eu(Hpzbc) 2 (NO 3 )]·H 2 O, Hpzbc is the negative monovalent anion ligand of 3-(1H-3-pyrazolyl)benzoic acid, and the Hpzbc structural formula is as follows:

[0037]

[0038] Further, the europium metal-organic framework compound with fluorescence recognition function is a three-dimensional structural compound based on europium-carboxylic acid chain building units, which contains a one-dimensional channel, and the surface of the one-dimensional channel contains pyrazole-NH groups that do not participate in coordination and Nitrate oxygen atom.

[0039]Structural description: a europium metal organic framework compound with fluorescence recognition function, its chemical formula is [Eu(Hpzbc) 2 (NO 3 )]·H 2 O, where Hpzbc is the negative monovalent anion ligand of 3-(1H-3-pyrazolyl)benzoic acid.

[0040] The crystal structure of the europium metal...

specific Embodiment 2

[0054] A kind of europium metal organic framework compound with fluorescence recognition function, its chemical formula is [Eu(Hpzbc) 2 (NO 3 )]·H 2 O, Hpzbc is the negative monovalent anion ligand of 3-(1H-3-pyrazolyl)benzoic acid, and the Hpzbc structural formula is as follows:

[0055]

[0056] Further, the europium metal-organic framework compound with fluorescence recognition function is a three-dimensional structural compound based on europium-carboxylic acid chain building units, which contains a one-dimensional channel, and the surface of the one-dimensional channel contains pyrazole-NH groups that do not participate in coordination and Nitrate oxygen atom.

[0057] A method for preparing a europium metal organic framework compound with a fluorescence recognition function, comprising the following steps:

[0058] (1) Europium nitrate hexahydrate and 3-(1 hydrogen-3-pyrazolyl)benzoic acid are added to acetonitrile and stirred evenly to obtain a mixed solution, eur...

specific Embodiment 3

[0061] A kind of europium metal organic framework compound with fluorescence recognition function, its chemical formula is [Eu(Hpzbc) 2 (NO 3 )]·H 2O, Hpzbc is the negative monovalent anion ligand of 3-(1H-3-pyrazolyl)benzoic acid, and the Hpzbc structural formula is as follows:

[0062]

[0063] Further, the europium metal-organic framework compound with fluorescence recognition function is a three-dimensional structural compound based on europium-carboxylic acid chain building units, which contains a one-dimensional channel, and the surface of the one-dimensional channel contains pyrazole-NH groups that do not participate in coordination and Nitrate oxygen atom.

[0064] A method for preparing a europium metal organic framework compound with a fluorescence recognition function, comprising the following steps:

[0065] (1) Europium nitrate hexahydrate and 3-(1 hydrogen-3-pyrazolyl)benzoic acid are added to acetonitrile and stirred evenly to obtain a mixed solution, euro...

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Abstract

The invention relates to a europium metal-organic framework compound with a fluorescent recognition function and a preparation method and application. The chemical formula of the europium metal-organic framework compound with the fluorescent recognition function is [Eu(Hpzbc)2(NO3)].H2O. The preparation method of the europium metal-organic framework compound with the fluorescent recognition function comprises the steps that 1, europium nitrate hexahydrate and 3-(1H-3-pyrazolyl) benzoic acid are added to acetonitrile to be stirred to be uniform, and a mixed solution is obtained; 2, the mixed solution is put into a reaction kettle, the reaction kettle is sealed and heated for a reaction, and an intermediate product is obtained; 3, the temperature in the reaction kettle is decreased to room temperature through cooling, a colorless bulk crystal is obtained, and the colorless bulk crystal is the europium metal-organic framework compound with the fluorescent recognition function. The europium metal-organic framework compound with the fluorescent recognition function is used for detecting Fe<3+> ions and Cr2O7<2-> ions.

Description

technical field [0001] The invention belongs to the field of chemistry, and in particular relates to a europium metal organic framework compound with a fluorescence recognition function, a preparation method and an application. Background technique [0002] Fe 3+ ions and Cr 2 o 7 2- Ions are well-known important raw materials, among which Fe 3+ is an essential element of life and is often used in industrial production, while Cr 2 o 7 2- It is an important oxidizing agent in industry. The widespread use of these two ions also brings many environmental and health concerns, because Cr 2 o 7 2- Highly toxic and carcinogenic, Fe 3+ Excessive absorption can cause health problems. Therefore, the preparation of a Fe 3+ ions and Cr 2 o 7 2- Materials with sensitive and selective recognition of ions are highly desirable. [0003] Among the existing detection methods, the fluorescence method has been extensively and deeply studied due to its advantages of high sensiti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F5/00C09K11/06G01N21/64
CPCC07F5/003C09K11/06C09K2211/1007C09K2211/1044C09K2211/182G01N21/6402
Inventor 侯磊李高鹏时文娟张文彦李泳志王尧宇
Owner NORTHWEST UNIV(CN)
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