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A Fluorescence Tunable Europium-Containing Coordination Polymer Hydrogel Film

A coordination polymer and hydrogel technology, which is applied in the field of europium-containing coordination polymer hydrogel film, can solve the problems that the material is difficult to maintain stable fluorescence, and water molecules quench fluorescence, etc. The effect of good bit ability and easy operation

Active Publication Date: 2021-08-03
BEIJING NORMAL UNIVERSITY
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Problems solved by technology

Secondly, because lanthanide complexes are easily affected by solvent molecules, water molecules will quench the fluorescence, making it difficult for the synthesized materials to maintain stable fluorescence in aqueous solution and respond to various stimuli.

Method used

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  • A Fluorescence Tunable Europium-Containing Coordination Polymer Hydrogel Film
  • A Fluorescence Tunable Europium-Containing Coordination Polymer Hydrogel Film
  • A Fluorescence Tunable Europium-Containing Coordination Polymer Hydrogel Film

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Embodiment Construction

[0029] One, the preparation of europium coordination polymer of the present invention

[0030] Eu(III)-PMAG hydrogel film is obtained by one-step polymerization method, and the specific operation steps are:

[0031] The polymerized monomer methacryloylglycine (MAG), europium nitrate crystal (Eu(NO 3 ) 3 ·6H 2 O), sodium persulfate (Na 2 S 2 o 8 ) and N,N'-methylenebisacrylamide (BIS) were dissolved in water to obtain a preparatory solution, in which MAG, Eu(NO 3 ) 3 ·6H 2 O, Na 2 S 2 o 8 and BIS at a concentration of 100mg mL, respectively -1 , 104mg mL -1 , 8mg mL -1 , 2mg mL -1 . In high purity N 2Immediately drop 40 μL of the preparatory solution onto the ITO surface under atmosphere, and the polymerization reaction was completed after about 2 hours.

[0032] The target product that obtains is carried out infrared spectrum detection (see figure 1 ), comparing the infrared spectrum data of MAG, PMAG and Eu(III)-PMAG samples, confirmed the successful polymer...

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Abstract

The embodiment of the present invention discloses a new europium-containing coordination polymer hydrogel film, wherein the preparation method of the europium-containing coordination polymer hydrogel film is a simple one-step process, including: (1) polymerizing the monomer Methacryloylglycine (MAG), europium nitrate crystals (Eu(NO 3 ) 3 ·6H 2 O), sodium persulfate (Na 2 S 2 o 8 ) and N,N’-methylenebisacrylamide (BIS) were dissolved in water to obtain a preparatory solution, in which MAG, Eu(NO 3 ) 3 ·6H 2 O, Na 2 S 2 o 8 The ratio of substance to BIS is 107:36:5:2; (2) in high-purity N 2 Immediately apply a certain volume of the preparatory liquid to the smooth solid surface under the atmosphere, and the polymerization reaction is completed after about 2 hours. The as-prepared europium-containing coordination polymer hydrogel film has a stable fluorescent signal, which is not only sensitive to pH, but also to different concentrations of copper ions and reduced nicotinamide adenine dinucleotide (NADH) in aqueous solution. Reversible stimuli-responsive properties, especially for quantitative analysis of NADH in solution.

Description

technical field [0001] The invention relates to a new europium-containing coordination polymer hydrogel film with adjustable fluorescence. Background technique [0002] Coordination polymers refer to inorganic-organic hybrid materials formed by chemical bonds between metal ions and organic ligands, which have the advantages of both polymers and coordination compounds. Utilizing the characteristics of multi-coordination points in the multi-electron configuration of metal ions can effectively form coordination bonds with ligands, and the central ion also determines the functional properties of coordination polymers. Lanthanide ions are ideal fluorophores due to their excellent optical properties, such as sharp emission peaks, long luminescence lifetime, and high color purity, and have potential applications in the fields of luminescence sensing and bioimaging. Europium ions exhibit intense red photoluminescence under UV light irradiation. This photoluminescence is not only a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/58C08L87/00
CPCC08F220/58C08G83/008C08J3/075C08J5/18C08J2387/00C08F222/385
Inventor 刘红云魏文婷
Owner BEIJING NORMAL UNIVERSITY
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