Preparation method of covalence organic framework material for detecting trace water in organic solvent

Abstract

The invention relates to a preparation method of a covalence organic framework material for detecting trace water in an organic solvent. The preparation method adopts a solvothermal method. The preparation method comprises the following steps: mixing 1,4-dihydroxy terephthalaldehyde, 2,4,6-tri(4-amino phenyl)-1,3,5-triazine, acetic acid, o-dichlorobenzene or mesitylene, and N,N-diethylacetamide, and ultrasonically uniformly dispersing; transferring a tube with a reaction solution to an environment with the temperature of 120 DEG C to react for 3d; and centrifugally separating obtained red solids, and alternately cleaning the separated solids by using tetrahydrofuran and dichloromethane, and then drying to obtain the needed covalence organic framework material. The preparation method has the advantages that the covalence organic framework material prepared by the method is high in crystallization degree, good in heat stability and chemical stability, stable in fluorescence performance, high in sensitivity to the trace water in the organic solvent, and can be reused for multiple times, so that an effective way is provided for detecting the trace water.

Description

technical field [0001] The invention relates to a covalent organic framework preparation technology and a trace water detection technology in an organic solvent, in particular to a preparation method of a covalent organic framework material for detecting trace water in an organic solvent. Background technique [0002] Covalent organic frameworks are a class of highly ordered porous crystalline polymers composed of organic monomers composed of light elements through covalent bonds. Due to their structural rigidity (2D or 3D), low density, thermal stability and The excellent properties such as good chemical stability, large specific surface area and highly ordered pores have attracted widespread attention of scientists. Although the research on covalent organic frameworks has developed rapidly in the past decade, such materials are still lacking, especially high crystallinity covalent organic frameworks. [0003] At present, covalent organic framework materials have shown goo...

AI Technical Summary

Problems solved by technology

Although the research on covalent organic frameworks has developed rapidly in the past decade, such materials are still relatively scarce, especially high crystallinity covalent organic frameworks.

[0003] At present, covalent organic framework materials have shown good application prospects in many fields such as gas storage, catalysis, sensing and separation, but the application research on covalent organic framework materials is still in its infancy, so expanding the application field of this material Has far-reaching implications for the development of covalent organic framework materials

The detection of water in organic solvents is of great significance to many chemical products, because water can affect the selectivity and yield of many chemical reactions. Although the traditional water detection method can accurately detect trace water at the ppm level, its There are still some deficiencies such as the high toxicity of the reagents used, cumbersome and time-consuming operation, etc. Therefore, it is particularly important to develop a fast and simple trace water detection method

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