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A kind of preparation method of covalent organic framework thin film

A technology of covalent organic framework and thin film, which is applied in the field of preparation of covalent organic framework thin film, can solve the problems of small size of sheet thin film and low peeling efficiency, and achieve simple reaction device, low operation cost and good universality Effect

Active Publication Date: 2020-06-09
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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  • A kind of preparation method of covalent organic framework thin film
  • A kind of preparation method of covalent organic framework thin film
  • A kind of preparation method of covalent organic framework thin film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The covalent organic framework powder used in this example was 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 to the glass vial, put the substrate silicon wafer into it, and add 6 moles per liter. After adding 0.2 ml of acetic acid, put the glass vial into the hydrothermal reactor, 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 reaction kettle was allowed to stand at room temperature, the substrate silicon wafer was taken out, soaked and ...

Embodiment 2

[0033] A preparation method of 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 a filter paper, and the covalent organic framework powder is placed in the vicinity of a reaction solvent. In the hydrothermal reaction kettle of dichlorobenzene, put the substrate silicon wafer into the hydrothermal reaction kettle, add catalyst acetic acid, seal the hydrothermal reaction kettle, heat the reaction at 60°C, and leave it to stand at room temperature after the reaction is completed. The substrate is taken out and cleaned to obtain a covalent organic framework film.

Embodiment 3

[0035] A preparation method of a covalent organic framework film. The covalent organic framework is a covalent organic framework powder connected by boronic ester 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 leave it to stand at room temperature after the reaction is completed. The substrate is taken out and cleaned to obtain a covalent organic framework film.

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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 frame films, in particular to a preparation method of a covalent organic frame film. Background technique [0002] Covalent organic framework materials are a class of crystalline organic frameworks synthesized by Omar M. Yaghi et al in 2005, which are completely composed of light elements (C, H, O, N, B, etc.) Porous material. Covalent organic framework materials use small organic molecules as secondary building units, and are connected in the form of covalent bonds to construct a polymer framework network through framework chemistry theory. 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 a...

Claims

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Application Information

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