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Covalent organic framework material as well as preparation method and application thereof

A covalent organic framework and reaction technology, applied in the direction of botany equipment and methods, applications, chemical instruments and methods, etc., can solve the problems of not killing bacteria or viruses, not being able to use it for many times for a long time, and accumulating waste, etc., to achieve Low cost, simple method, resource saving effect

Active Publication Date: 2021-10-22
SHANDONG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The inventor found that the current masks can only meet the basic requirements of blocking bacteria or viruses to a certain extent, but have almost no ability to kill bacteria or viruses, and are mostly used as disposable materials, which cannot be used repeatedly and for a long time, resulting in serious waste of resources and accumulation of waste

Method used

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  • Covalent organic framework material as well as preparation method and application thereof
  • Covalent organic framework material as well as preparation method and application thereof
  • Covalent organic framework material as well as preparation method and application thereof

Examples

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preparation example Construction

[0061] In one or some embodiments of the present disclosure, the preparation method of the above-mentioned COF-Ag material is provided, including the following steps: using the above-mentioned covalent organic framework material or the product obtained by the above-mentioned preparation method of the covalent organic framework material as a raw material, and silver nitrate After the reaction, the crude product is centrifuged, purified, and vacuum-dried to obtain the product COF-Ag.

[0062] Preferably, the molar ratio of carboxylic acid groups and silver nitrate in the COF material is 1:1.5-3; preferably, the concentration of silver nitrate in the reaction system is 0.1M;

[0063] Or, the reaction time is 12 to 36 hours, preferably, the reaction time is 12 hours;

[0064] Or, the COF material reacts with silver nitrate in a reaction solvent, and the reaction solvent is one of ethanol, methanol, water or two mixed solvents;

[0065] Preferably, the reaction solvent is a mixtur...

Embodiment 1

[0094] The preparation method of the model small molecule is as follows:

[0095] Round bottom flask (50 mL), benzaldehyde (1.0 mmol), aniline (1.2 mmol) and pyruvic acid (1.0 mmol), ethanol (25 mL). After uniform stirring for 10 minutes, p-toluenesulfonic acid (p-TSA 10% 0.1 mmol) was added as a catalyst, and the reaction mixture was refluxed (80° C.) for 3 hours after adding the catalyst. The reaction mixture was monitored by thin layer chromatography (n-hexane:ethyl acetate 1:1). After completion of the reaction, cool to room temperature, then pour the reaction mixture into ice water, collect the crude product and all derivatives, and separate and purify by chromatography. Obtain model small molecules. figure 1 Synthetic routes for model small molecules, figure 2 , image 3 , Figure 4 , Figure 5 FT-IR of the model small molecule, 1 H-NMR, 13 C-NMR and HRMS spectra. The successful preparation of model small molecules demonstrates the feasibility of the reaction. ...

Embodiment 2

[0097] The preparation method of the covalent organic framework material is as follows:

[0098] 2,5-dihydroxyterephthalaldehyde (13.3mg, 0.08mmol), 5,10,15,20-tetrakis(4-aminophenyl)porphyrin (27mg, 0.04mmol), o-dichlorobenzene (o -DCB) / n-butanol (n-BuOH) (1 / 1, 2mL) solution, pyruvic acid (14μL, 0.2mmol) was sonicated for 10 minutes, p-toluenesulfonic acid monohydrate (0.38mg, 0.02mmol) was added and sonicated for 10 minutes , adding acetic acid (6M, 0.3mL) and heating at 120°C for 7 days to obtain a reddish-purple solid powder. The obtained crude product material was washed three times in ethanol, tetrahydrofuran, and acetone respectively, and the product was obtained by centrifugation and vacuum drying. COF-Ag. pass Figure 6 , Figure 7 , Figure 8 , Figure 9 They are the sample photo, infrared spectrum, XRD spectrum and SEM picture of the COF material respectively. The characterization proves that the synthesized COF material is a highly crystalline and porous frame...

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Abstract

The invention relates to the field of porous organic framework materials, and particularly provides a covalent organic framework material as well as a preparation method and application thereof. The structure of the covalent organic framework material is as shown in a formula (1) in the specification. The preparation method comprises the following steps: in a reaction solvent, taking 5, 10, 15, 20-tetra (4-aminophenyl) porphyrin, 2, 5-dihydroxy terephthalaldehyde and pyruvic acid as monomers, carrying out heating reaction for a period of time under the action of a catalyst to obtain a crude product, cooling to room temperature, and carrying out centrifugal separation, purification and vacuum drying on the crude product to obtain a purplish red product. The problems that in the prior art, COF materials are not fully developed and utilized, and in the prior art, masks can only block viruses, almost have no capability of killing bacteria or viruses, and are disposable masks are solved.

Description

technical field [0001] The present disclosure relates to the field of porous organic framework materials, and specifically provides a covalent organic framework material and its preparation method and application. Background technique [0002] The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art. [0003] Due to their permanent porosity, highly ordered and extended structure, good chemical stability, and tunable functionality, covalent organic frameworks (COFs) have important applications in catalysis, separation, sensing, nanomedicine, etc. prospect. However, traditional COF materials are mostly connected by dynamic reversible bonds such as imine bonds, which have poor stability in strong acid, strong base or reducing chemical environment. In order to expand the bonding types of COF materials and improve their chemical stability, more and more link units and construction methods have bee...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/06A01N59/16A01N25/10A01P1/00B01J31/06A61L2/08A41D13/11A41D31/30A41D31/02A41D31/10A41D31/04
CPCC08G73/0688A01N59/16A01N25/10B01J31/06A61L2/088A41D13/1115A41D13/1192A41D31/30A41D31/02A41D31/10A41D31/04A41D2500/54A41D2500/30
Inventor 董育斌姚丙建丁罗刚胡一宁侯承辛于颖超
Owner SHANDONG NORMAL UNIV
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