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Preparation method of H-MOF-5/TCPP fluorescent composite material

An H-MOF-5, composite material technology, applied in the field of quantum chemistry, can solve the problems of composite material morphology influence, easy generation of by-products, optical property inhibition, etc., to improve water solubility and fluorescence properties, prevent aggregation, and maintain The effect of consistency

Active Publication Date: 2019-03-08
NORTHWEST NORMAL UNIVERSITY
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Problems solved by technology

It is easy to aggregate in aqueous solution, resulting in suppressed optical properties, so overcoming this shortcoming of porphyrin has been a topic of in-depth discussion by scholars.
[0004] At present, the preparation method of MOFs / porphyrin fluorescent composite materials is mainly synthesized by high-temperature hydrothermal method. The preparation process takes a long time and the yield is low. by-product

Method used

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  • Preparation method of H-MOF-5/TCPP fluorescent composite material
  • Preparation method of H-MOF-5/TCPP fluorescent composite material
  • Preparation method of H-MOF-5/TCPP fluorescent composite material

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Embodiment 1

[0021] Weigh 70 mg of zinc nitrate, 17 mg of terephthalic acid, 40 mg of N-polyvinylpyrrolidone and 20 mg of dodecanoic acid, dissolve them in 5 mL of N-N-dimethylacetamide, transfer them to a sealed autoclave, and Put the reaction kettle into an oven and react at a temperature of 120°C for 30 minutes. After cooling down to room temperature, centrifuge at 10,000 rpm for 10 minutes, wash with ethanol three times, put it in a vacuum oven at 50°C, and dry for 3 hours to obtain H-MOF-5 nanosheets . Weigh 0.036g of the H-MOF-5 nanosheets, dissolve in 5mL ethanol solution, and ultrasonically treat for 10min to obtain a mixed solution; under stirring conditions, add 0.01g of porphyrin to the mixed solution, and stir to make the porphyrin completely Dissolve and continue to stir for 8 hours at room temperature to obtain a mixture; centrifuge at 10,000 rpm for 5 minutes to separate the product, wash with ethanol three times and centrifuge, and dry in a vacuum oven at 50°C for 3 hours t...

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Abstract

The invention discloses a preparation method of a fluorescent composite material based on MOFs / porphyrin. The method comprises the following steps: dissolving zinc nitrate, terephthalic acid, N-polyvinylpyrrolidone and lauric acid into N-N dimethylacetamide, and performing hydrothermal reaction, cooling, centrifugation, ethanol washing and vacuum drying, so as to obtain an H-MOF-5 nanosheet; dissolving the H-MOF-5 nanosheet into an ethanol solution, and performing ultrasonic mixing, so as to obtain a mixed solution; stirring, adding porphyrin into the mixed solution, ensuring that the porphyrin is completely dissolved, and continuously stirring at a room temperature, so as to obtain a mixture; performing centrifugation on the mixture, separating out a product, and performing ethanol washing and centrifugation and vacuum drying, so as to obtain an H-MOF-5 / TCPP fluorescent composite material. The method has the advantages that porphyrin molecule is loaded to the H-MOF-5 nanosheet, the aggregation of the porphyrin molecule is prevented, the water solubility and fluorescence property of the porphyrin molecule is improved, and the morphology consistency of the material before and aftercompounding is kept, so that the fluorescent composite material has an important effect in terms of fluorescence sensors.

Description

technical field [0001] The invention belongs to the technical field of quantum chemistry and relates to a preparation method of an H-MOF-5 / TCPP fluorescent composite material. Background technique [0002] Porphyrins are a class of heterocyclic macrocyclic organic compounds. It has a planar conjugated structure, a variety of three-dimensional structures, a large extinction coefficient in the visible light region, excellent photoelectric performance, good stability and biocompatibility. Therefore, it has been widely used in chemical sensing, biomedicine, biomimetic catalysis, photoelectric devices and other fields. However most porphyrins are hydrophobic. It is easy to aggregate in aqueous solution, resulting in suppressed optical properties, so overcoming this shortcoming of porphyrin has been a topic of in-depth discussion by scholars. [0003] Two-dimensional metal organic framework (Metal Organic Frameworks MOFs) material is a kind of porous material developed in recen...

Claims

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Application Information

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IPC IPC(8): C07D487/22C09K11/06C09K11/02
CPCC07D487/22C09K11/025C09K11/06C09K2211/1029
Inventor 陈晶胥亚丽高云静张彩中牛琦霞张茜徐方红卢小泉
Owner NORTHWEST NORMAL UNIVERSITY
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