Checked covalent organic framework containing different pore environments and preparation method and application thereof

Abstract

The invention relates to the technical field of new materials, in particular to a grid covalent organic framework containing different pore environments as well as a preparation method and application of the grid covalent organic framework. The covalent organic framework provided by the invention has a grid special-hole structure regularly arranged in different hole environments; the pore environment comprises hydrophilic pores and hydrophobic pores. The COF provided by the invention is the first case of COF with multiple pore environments at the same time, and is a porous functional material obtained through Schiff base reaction under the action of an acid catalyst by taking an elaborately designed iso-edge aldehyde group monomer and an amino monomer as raw materials. The preparation method has wide applicability, and the COF material with a similar structure can be obtained by changing raw material components and reaction conditions. The square COF with different pore environments prepared by the invention has high specific surface area and high crystallinity, and also has excellent absorption capacity for visible light, so that the square COF has higher potential application value in the aspects of photocatalysis and photoelectron transmission.

Description

technical field [0001] The invention relates to the technical field of new materials, in particular to a lattice covalent organic framework containing different pore environments and a preparation method and application thereof. Background technique [0002] Organic porous materials are a class of materials with rich pore structure composed of light elements such as C, H, O, and N through covalent bonds. Organic porous materials have the characteristics of light weight, adjustable pore size, and modifiability. So far, organic porous materials have shown broad application prospects in the fields of gas adsorption and separation, energy storage, optoelectronic materials, and heterogeneous catalysis. For the development of organic porous materials, some innovative structural designs and functional applications are still being rapidly updated. It is very important to explore organic porous materials with novel functions and high performance for the development of new applicatio...

AI Technical Summary

Problems solved by technology

However, the current research on heteroporous COF materials mainly focuses on the difference in the shape and size of the pores, and the design and research of different pore environments have not yet been involved.

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