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Preparation method of covalent organic framework film

A technology of covalent organic framework and film, applied in the field of preparation of covalent organic framework film, can solve the problems of small size of sheet-like film, low peeling efficiency, etc., and achieves simple reaction device, low operating cost and good universality Effect

Active Publication Date: 2019-11-22
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is simple to operate, but the stripping efficiency is not high, and the size of the obtained flake film is small, only nanometer or micrometer scale

Method used

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  • Preparation method of covalent organic framework film
  • Preparation method of covalent organic framework film
  • Preparation method of covalent organic framework film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The covalent organic framework powder used in this example is synthesized by solvothermal method from 2,5-dimethoxyterephthalaldehyde and 1,3,5-tris(4-aminophenyl)benzene, figure 1 It is a schematic diagram of the covalent organic framework structure, and the rest of the raw materials are commercially available products.

[0028] Weigh 2 mg of covalent organic framework powder, wrap it tightly with filter paper and put it into a glass vial, add 2 ml of o-dichlorobenzene into the glass vial, put the substrate silicon wafer into it, add 6 moles per liter After adding 0.2 ml of acetic acid, put the glass vial into a hydrothermal reaction kettle, heat it to 120°C, and react for 4 hours, 6 hours, 8 hours, 12 hours or 24 hours. The longer the reaction time, the thickness of the obtained covalent organic framework film thicker. After the reaction, the hydrothermal reactor was allowed to stand at room temperature, and the substrate silicon wafer was taken out, soaked and clean...

Embodiment 2

[0033] A method for preparing a covalent organic framework film, the covalent organic framework is a covalent organic framework powder connected by imine bonds, the covalent organic framework powder is wrapped in filter paper, and the covalent organic framework powder is placed in a reaction solvent adjacent In the hydrothermal reaction kettle of dichlorobenzene, put the substrate silicon chip into the hydrothermal reaction kettle, add the catalyst acetic acid, seal the hydrothermal reaction kettle, heat the reaction at 60°C, and let it stand at room temperature after the reaction is completed. After taking out the substrate and cleaning it, a covalent organic framework film is obtained.

Embodiment 3

[0035] A method for preparing a covalent organic framework film, the covalent organic framework is a covalent organic framework powder connected by borate bonds, the covalent organic framework powder is wrapped in filter paper, and the covalent organic framework powder is placed in a reaction solvent In the hydrothermal reaction kettle of trimethylbenzene, put the substrate quartz into the hydrothermal reaction kettle, add the catalyst trifluoroacetic acid, seal the hydrothermal reaction kettle, heat the reaction at 80°C, and let it stand at room temperature after the reaction is completed. After taking out the substrate and cleaning it, a covalent organic framework film is obtained.

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Abstract

The invention relates to a preparation method of a covalent organic framework film. The method comprises the following steps: putting covalent organic framework powder serving as a precursor into a hydrothermal reaction kettle containing a reaction solvent, putting a substrate into the hydrothermal reaction kettle, adding a catalyst, sealing the hydrothermal reaction kettle, heating to react, standing to room temperature after the reaction is finished, taking out the substrate, and cleaning to obtain the covalent organic framework film. Compared with the prior art, the invention provides a newmethod for preparing the covalent organic framework film; the thickness of the covalent organic framework film prepared by the application method is controllable; the efficiency is high; the universality is good; the reaction device is simple and the operation cost is low.

Description

technical field [0001] The invention belongs to the field of covalent organic framework films, and in particular relates to a preparation method of covalent organic framework films. Background technique [0002] Covalent organic framework materials are a kind of crystalline organic framework materials synthesized by Omar M.Yaghi et al. porous material. Covalent organic framework materials use organic small molecules as secondary building units, and through framework chemistry theory, they are connected in the form of covalent bonds to form a polymer framework network. It has the characteristics of low density, large specific surface area, porosity and crystallinity. In addition, the structure and function of covalent organic framework materials can also be regulated by designing the structure and function of small organic molecules. Due to the above unique advantages, covalent organic framework materials have shown good application prospects in the fields of gas storage a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L87/00C08J5/18C08G83/00
CPCC08G83/008C08J5/18C08J2387/00
Inventor 魏大程
Owner FUDAN UNIV
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