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Europium complex and preparing method and application thereof

A technique of europium complex and furandicarboxylic acid is applied in the field of europium complex and its preparation, which can solve the problems of poor performance of fluorescent probe materials and complicated preparation process, and achieves high sensitivity and selectivity, good repeatability, high Yield effect

Inactive Publication Date: 2019-07-12
BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Based on the problems existing in the prior art, the object of the present invention is to provide a europium complex and its preparation method and application, which can solve the problems of poor performance and complex preparation process of existing fluorescent probe materials for identifying small molecules such as iron ions

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  • Europium complex and preparing method and application thereof
  • Europium complex and preparing method and application thereof
  • Europium complex and preparing method and application thereof

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preparation example Construction

[0022] The embodiment of the present invention also provides a method for preparing a europium complex, which is used to prepare the above-mentioned europium complex, comprising:

[0023] Mix 2,5-furandicarboxylic acid, phenanthroline and europium nitrate, add it to the solution of N,N-dimethylformamide and water mixed at a volume ratio of 1:1, stir for 10 minutes, and then place Stand in an oven at 95°C for 96 hours, and the colorless blocky crystals obtained after cooling are europium complexes;

[0024] The consumption of each raw material of above-mentioned preparation method is:

[0025]

[0026] The embodiment of the present invention further provides an application of the above-mentioned europium complex as a fluorescent probe for identifying iron ions.

[0027] The europium complex of the present invention is composed of elements or groups such as europium, deprotonated 2,5-furandicarboxylic acid, o-phenanthroline, etc., to Fe 2+ , Fe 3+ It has high sensitivity a...

Embodiment 1

[0030] This embodiment provides a europium complex, the preparation method of which comprises: mixing 0.031g of 2,5-furandicarboxylic acid, 0.036g of o-phenanthroline and 0.045g of europium nitrate, and adding to 5mL of N,N-di Mix methylformamide and water (volume ratio: 1:1), stir for 10 minutes, and then place it in an oven at 95°C for 96 hours. After cooling, you will get colorless blocky crystals, which are europium complexes. thing.

[0031] Specifically, the selected size is 0.25×0.24×0.23mm 3 The europium complex prepared in Example 1 was subjected to single crystal structure analysis, and the single crystal diffraction data was collected by a Bruker-AXS SMART APEX2CCD diffractometer, and the Mokα ray monochromated by a graphite monochromator 3.0°≤θ≤28.4°, thus the following results are obtained: the europium complex prepared in Example 1 of the present invention belongs to the monoclinic crystal system, the space group is all C2c, and the unit cell parameters are app...

Embodiment 2

[0033] This embodiment provides a europium complex, the preparation method of which comprises: mixing 0.31g of 2,5-furandicarboxylic acid, 0.36g of o-phenanthroline and 0.45g of europium nitrate, and adding them to 50mL of N,N-dimethyl In a solution mixed with methyl formamide and water (volume ratio 1:1), stir for 10 minutes, then place it in an oven at 95°C for 96 hours, and obtain colorless blocky crystals after cooling, which is the europium complex .

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Abstract

The invention discloses a europium complex and a preparing method and application thereof. The chemical structural formula of the europium complex is [Eu(C6H2O5)(C6H3O5)(C12H8N2)(H2O)] (C12H8N2)0.5 H2O, wherein C6H2O5 represents 2,5-furandicarboxylicacid of which two hydrogens are removed, C6H3O5 represents 2,5-furandicarboxylicacid of which one hydrogen is removed, and C12H8N2 represents phenanthroline. The preparing method comprises the steps of mixing 2,5-furandicarboxylicacid, phenanthroline and europium nitrate, adding the mixture into a mixed solution of N,N-dimethyl formamide and wateraccording to the volume ratio of 1:1, conducting stirring for 10 minutes, placing the solution in an oven at 95 DEG C, conducting standing for 96 hours, and conducting cooling to obtain the europium complex. The europium complex serves as a fluorescent probe for recognizing iron ions with high sensitivity and selectivity, the preparing technology is simple, the chemical components are easy to control, the repeatability is good, and the high yield is easy to achieve.

Description

technical field [0001] The invention relates to the field of fluorescent probe preparation, in particular to a europium complex and its preparation method and application. Background technique [0002] At present, a fluorescent substance is used as an indicator to form a fluorescent probe, which is excited by a certain wavelength of light to cause the fluorescent probe to generate fluorescence, and the qualitative or quantitative analysis of the detected substance is realized by detecting the generated fluorescence. Compared with traditional detection and analysis methods, fluorescent probes have the advantages of good selectivity, good sensitivity, simple equipment, and easy operation, so they are widely used in environmental detection, biochemistry and other fields. [0003] Metal ions play an important role in the fields of environment, biology and medicine, and their concentration, type and valence state have an important impact on life activities and the environment. F...

Claims

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Application Information

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IPC IPC(8): C07F5/00C09K11/06G01N21/64
CPCC07B2200/13C07F5/003C09K11/06C09K2211/182G01N21/643
Inventor 王浩郝学敏郭文莉李树新伍一波商育伟杨丹
Owner BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
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