Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Covalent organic framework material with respiratory effect as well as preparation method and application thereof

A technology of covalent organic framework and breathing effect, applied in the direction of separation methods, analytical materials, chemical instruments and methods, etc., can solve the problems of increasing the growth of crystal framework defects, loss of crystallinity, collapse, etc., achieving low cost and easy operation , High stability effect

Active Publication Date: 2021-01-22
WUHAN UNIV
View PDF7 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high rotational freedom around single bonds in the flexible structural unit, which enables it to adopt multiple conformations, the defects of crystal framework growth are greatly increased, and the obtained 3D COFs may partially lose crystallinity or even collapse after activation, Therefore, there are rare reports on the construction of 3D COFs using flexible structural units.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Covalent organic framework material with respiratory effect as well as preparation method and application thereof
  • Covalent organic framework material with respiratory effect as well as preparation method and application thereof
  • Covalent organic framework material with respiratory effect as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A covalent organic framework material with breathing effect, the preparation method of which comprises the steps of:

[0034] (1) Place 49.2mg (0.08mmol) TFMB (substituent R=H) and 30.4mg (0.08mmol) TAPM in an ampoule, add a mixture of 2.8mL mesitylene and 1.2mL chloroform, and ultrasonically disperse It is well mixed;

[0035] (2) Add 0.4mL of acetic acid solution (12mol / L) to the ampoule, then freeze the ampoule with liquid nitrogen, vacuumize, and seal the ampoule under vacuum conditions;

[0036] (3) Raise the temperature of the reaction system and fully react for 168 hours at 110° C. (the crystallinity of the product is the best when tested by XRD);

[0037] (4) After the reaction is completed, cool down to room temperature and obtain powder by suction filtration. After the powder is washed with tetrahydrofuran and dichloromethane in sequence, it is extracted with tetrahydrofuran, methanol, dichloromethane and acetone in order by Soxhlet, and then vacuum-dried to ...

Embodiment 2

[0047] The covalent organic framework@polyvinylidene fluoride membrane was prepared by using the FCOF-5 prepared in Example 1 as a raw material. The specific preparation method is as follows:

[0048] (1) After fully pulverizing 40 mg of the covalent organic framework material powder prepared in Example 1, mix evenly with a solution obtained by dissolving 40 mg of polyvinylidene fluoride in 0.5 mL of N,N-dimethylformamide;

[0049] (2) Apply a mixture of the obtained covalent organic framework material and polyvinylidene fluoride (number average molecular weight 534,000) evenly on a glass sheet with a scraper, and bake in an oven at 120°C for 4 hours to remove the solvent;

[0050] (3) Take out the above-mentioned glass sheet, after cooling to room temperature, immerse in ethanol to release the mold, and dry it in an oven at 80°C to obtain a curly covalent organic framework@polyvinylidene fluoride film.

[0051] Cut the above-mentioned covalent organic framework@polyvinylidene...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a covalent organic framework material with respiratory effect, and a preparation method and an application thereof, the covalent organic framework material with respiratory effect is formed by condensation of a flexible construction unit TFMB and rigid TAPM aldehydeamine, and the covalent organic framework material has high stability, can keep stable for several months in the use process, is basically free of decomposition phenomenon, can be recycled, has a breathing effect, can be subjected to structural transformation after completely drying and adsorbing solvent gas molecules, has a closed pore state and an open pore state, is in a closed pore state when completely drying, can be subjected to structural change after adsorbing the solvent gas molecules, and is reversible; the material has good potential in the aspects of gas adsorption and separation, has good application prospect in the field of intelligent response materials, and has a structural formula shown in the specification, in the formula, R is selected from H, Ph, NO2, SH, F, Br and SO3H;.

Description

technical field [0001] The invention belongs to the field of constructing porous materials and intelligent materials by using flexible building units, and in particular relates to a three-dimensional flexible covalent organic framework material constructed by using flexible building units and its preparation method and application. Background technique [0002] Covalent Organic Frameworks (COFs) are a class of crystalline organic porous materials, which usually have the characteristics of low density, high specific surface area, good thermal stability, and functional design. They are widely used in gas adsorption, Separation, catalysis, sensing, optoelectronic materials and energy storage and other fields. COFs can be classified into two-dimensional COFs (with a 2D layered structure) and three-dimensional COFs (with a 3D network structure). Compared to 2D COFs whose non-covalent bonds facilitate their synthesis, the construction of 3D COFs is very challenging. The first ch...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C08G83/00B01J20/22B01J20/30B01D53/02B01D53/26B01D53/28G01N33/00
CPCC08G83/008B01J20/226B01D53/02B01D53/261B01D53/28G01N33/0036B01D2257/80
Inventor 汪成刘晓玲桂波林桂庆尹晟
Owner WUHAN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com