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Covalent organic framework material with benzofuran structure, synthesis method and application thereof

A technology of covalent organic framework and benzofuran, which is applied in the field of synthesis and covalent organic framework materials, can solve the problems of restricting the development of new structures and new materials, limited reaction types, etc., and achieves a simple synthesis method, good operability, and huge size. The effect of applying value

Active Publication Date: 2020-06-05
QINGDAO AGRI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the types of reactions involved in covalent organic frameworks are limited, which limits the development of new structures and new materials. The design and development of new materials, new precursors and new synthesis methods will be the future development trend
[0003] Through the above analysis, the problems and defects of the existing technology are: the types of reactions involved in the current covalent organic framework are limited, which limits the development of new structures and new materials

Method used

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  • Covalent organic framework material with benzofuran structure, synthesis method and application thereof
  • Covalent organic framework material with benzofuran structure, synthesis method and application thereof
  • Covalent organic framework material with benzofuran structure, synthesis method and application thereof

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preparation example Construction

[0039] Such as figure 1 As shown, the synthesis method of the covalent organic framework material with benzofuran structure provided by the embodiment of the present invention includes the following steps:

[0040] S101: Mix 2,4,6-trihydroxy-triphenylcarbaldehyde and 2,6-diaminobenzo[1,2-b:4,5-b']difuran-3,7-dicarboxylic acid dimethyl The ester is added to the heat-resistant glass tube, and then the solvent and catalyst are added;

[0041] S102: Sonicate the mixture for five minutes, cycle through freezing-vacuumizing-thawing three times, seal it and put it in a blast oven, and react at 120°C for 8h-72h;

[0042] S103: After the reaction is finished, cool down to room temperature naturally, open the glass tube, centrifuge, and wash with THF 3 times;

[0043] S104: put in a vacuum oven, and dry at 120° C. for 10 hours to obtain a brown powder solid.

[0044] The synthesis method of the covalent organic framework material with the benzofuran structure provided by the embodime...

Embodiment 1

[0060] The synthesis method of the covalent organic framework material with benzofuran structure provided by the embodiment of the present invention comprises the following steps: 42 mg of 2,4,6-trihydroxy-trithenylaldehyde and 91 mg of 2,6-diaminobenzo[1 , 2-b:4,5-b'] Difuran-3,7-Dimethyl dicarboxylate was added to a heat-resistant glass tube, then 0.3ml 6mol / L acetic acid, 3ml o-dichlorobenzene and 3ml n-butyl Alcohol, secondly, the mixture was sonicated for five minutes, cycled through freezing-vacuumizing-thawing three times, sealed and placed in a blast oven, and reacted at 120°C for 72h. After the reaction was completed and cooled to room temperature naturally, the glass tube was opened, centrifuged, and washed 3 times with tetrahydrofuran, then placed in a vacuum oven and dried at 120°C for 10 hours to obtain a brown powder solid (named BDFCOF-L1).

Embodiment 2

[0062] The synthesis method of the covalent organic framework material with benzofuran structure provided in the embodiment of the present invention comprises the following steps: 42 mg of 2,4,6-trihydroxy-trithenylaldehyde and 99.6 mg of 2,6-diaminobenzo[ 1,2-b:4,5-b']difuran-3,7-diethyl carboxylate was added to a heat-resistant glass tube, and then 0.3ml of 6mol / L acetic acid, 3ml of o-dichlorobenzene and 3ml of n- Butanol, and secondly, the mixture was sonicated for five minutes, cycled through freezing-vacuumizing-thawing three times, sealed and placed in a blast oven, and reacted at 120°C for 72h. After the reaction was completed and cooled to room temperature naturally, the glass tube was opened, centrifuged, and washed 3 times with tetrahydrofuran, then placed in a vacuum oven and dried at 120°C for 10 hours to obtain a brown powder solid (named BDFCOF-L2).

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Abstract

The invention belongs to the technical field of new material synthesis, and discloses a covalent organic framework material with a benzofuran structure, a synthesis method and an application thereof.The material is connected by covalent bonds, has a highly planar rigid structure and an AA accumulation structure between layers, and has high crystallinity, a structural unit of the material belongsto a hexagonal crystal system P6 / m space group, and the cell parameters a, b, c are characterized in that alpha, beta and gamma are respectively about 90 degrees, 90 degrees and 120 degrees. Accordingto the preparation method, benzodifuran amino derivatives containing different substituent groups and 2, 4, 6-trihydroxy s-tribenzaldehyde are synthesized into the covalent organic framework materialwith a benzofuran structure under solvothermal reaction conditions. The synthesis method is simple and good in operability, and the pore diameter of the material and functional groups around pore channels can be accurately regulated and controlled by controlling the functional groups in the monomer benzodifuran amino derivative.

Description

technical field [0001] The invention belongs to the technical field of preparation of covalent organic framework materials, and in particular relates to a covalent organic framework material with a benzofuran structure, a synthesis method and an application. Background technique [0002] Covalent organic frameworks (COFs) are crystalline porous materials composed of various small organic molecular building blocks connected by covalent bonds. COFs materials have attracted people's attention due to their regular structure, uniform pore channels, and low density. Compared with traditional inorganic porous materials, COFs materials have significant advantages such as high thermal stability, large specific surface area, and good structural tailoring. It shows potential applications in gas adsorption, photoelectrocatalysis, sensing, etc. The design, preparation, and research on the relationship between structure and performance of new materials have always been the frontiers of ...

Claims

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Application Information

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IPC IPC(8): C08G73/00B01D53/02B01J20/22
CPCC08G73/00B01J20/226B01D53/02
Inventor 郝龙曹兴弟
Owner QINGDAO AGRI UNIV
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