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Tetrapyridylporphyrin metal-organic framework materials, and preparation method and use thereof

A technology of tetrapyridyl porphyrin and organic framework, applied in the field of pyridyl porphyrin MOFs and their preparation, can solve the problems of weak coordination bond, performance-dependent, influence on use, etc., and achieve the effect of rich and adjustable functions

Inactive Publication Date: 2019-09-20
SHENZHEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using MOFs as catalysts and artificial enzymes has good applications, but its performance often depends on the supported metal. How to achieve functionalization by adjusting the metal properties of the coordination node is a difficult problem.
At the same time, due to the weak coordination bonds of existing MOFs, they are easily hydrolyzed in the presence of water vapor and their skeletons collapse, which affects their use.
Moreover, MOFs are generally synthesized by hydrothermal method, and the reaction process is relatively long.

Method used

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  • Tetrapyridylporphyrin metal-organic framework materials, and preparation method and use thereof
  • Tetrapyridylporphyrin metal-organic framework materials, and preparation method and use thereof
  • Tetrapyridylporphyrin metal-organic framework materials, and preparation method and use thereof

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Experimental program
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Embodiment 1

[0051] (1) Preparation of PdCl 2 -MOF nanoparticles

[0052] First weigh 20mg (0.032mmol) of 5,10,15,20-tetrakis(4-pyridyl)porphyrin (TPyP) in a 100mL beaker, add 10mL of 10mM hydrochloric acid solution and stir to fully dissolve it, otherwise known as Take 19mg (0.064mmol) of Na 2 PdCl 4 , dissolved in 10 mL of pure water. While stirring, the above TPyP hydrochloric acid solution was added to Na 2 PdCl 4 The solution was stirred for 4 hours to stop the reaction, the reaction solution was transferred to a centrifuge tube and centrifuged at a speed of 12000 rpm for 20 minutes, the supernatant was discarded, and the precipitate was washed with water and centrifuged for 2 to 3 times. The precipitate was dispersed into pure water and stored for later use.

[0053] (2) PdCl 2 -Reduction of MOF nanoparticles

[0054] The above prepared PdCl 2 - MOF nanoparticle 10mL (10mg) aqueous dispersion was cooled in an ice-water bath for 30min, 10 microliters of hydrazine hydrate was ...

Embodiment 2

[0059] First weigh 20mg (0.032mmol) of 5,10,15,20-tetrakis(4-pyridyl)porphyrin (TPyP) in a 100mL beaker, add 10mL of 10mM hydrochloric acid solution and stir to fully dissolve it, otherwise known as Take 66mg (0.128mmol) of H 2 PtCl 6 ·6H 2 O, dissolved in 10 mL of pure water. While stirring, the above TPyP hydrochloric acid solution was added to H 2 PtCl 6 solution, stirred for 12 hours, stopped the reaction, transferred the reaction solution to a centrifuge tube and centrifuged at a speed of 12000 rpm for 20 minutes, poured off the supernatant, washed with water and ethanol in the order of precipitation and centrifuged for 2 to 3 times, and vacuum-dried at 40°C for 12 hours to obtain porphyrin Phenyl-platinum-metal-organic framework materials.

[0060] Figure 17 Shown is the transmission electron microscope image of the porphyrin-platinum-metal organic framework material, and its morphology is a strip-like nanostructure.

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Abstract

The invention relates to pyridylporphyrin metal-organic framework materials (MOFs), and concretely relates to a tetrapyridylporphyrin metal-organic framework materials (MOFs), and a preparation method and a use thereof. The purpose of the invention is to provide the tetrapyridylporphyrin metal-organic framework materials which are MOFs. Every organic-framework material comprises porphyrin containing a pyridine substituent and a metal ion coordinated by the nitrogen atom on the pyridine substituent on a porphyrin ring. The invention also provides the corresponding preparation method and the use of the tetrapyridylporphyrin metal-organic framework materials. The MOFs prepared in the invention have the following advantages: 1, the MOFs can be synthesized at room temperature, and can exist stably in water for a long time; 2, the range of usable metals is very wide; 3, a palladium metal-organic framework material obtained by using palladium as a coordination metal can carry hydrogen after being reduced, and the hydrogen atom coordinates with the monoatomic distributed palladium, so the hydrogen load capacity of the material is higher than the recorded hydrogen load capacity of palladium particles; 4, the obtained Pd-MOFs have a porous structure; and 5, porphyrin in the porphyrin MOFs are a photosensitizer, and has fluorescent emission.

Description

technical field [0001] The present invention relates to a class of pyridyl porphyrin metal-organic framework materials (MOFs), in particular to a class of pyridyl porphyrin MOFs and their preparation methods, and their use as functional materials in medicine, imaging, catalysis, sensing, etc. . Background technique [0002] Self-assembled materials with specific shapes and structures are research hotspots in the field of functional materials, and have a wide range of applications in the fields of electricity, optics, energy conversion, gas adsorption and separation, and catalysis. In the field of biomedicine, metal-organic framework materials have important applications in drug delivery, bioimaging, sensing and diagnosis. The excellent properties of MOFs come from their structural features, such as porosity, high specific surface area, modifiability, thermal stability, etc., on the one hand, and from the coordinated metals, which endow MOFs with special properties. Using M...

Claims

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Application Information

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IPC IPC(8): C08G83/00
CPCC08G83/008
Inventor 何前军周高信金召奎
Owner SHENZHEN UNIV
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