Cucurbit[8]uril-based porous supermolecular assembly and preparation method thereof

Abstract

The construction unit of a cucurbit[8]uril-based porous supermolecular assembly adopts cucurbit[8]uril (CB[8]) as a main body and a hexasubstituted naphthyl imidazolium salt polypyridyl ruthenium complex (SIMRu(bpy)3) as an object, and a binary supermolecular aggregate constructed through bonding the main body and the object can effectively adsorb various types of anion compounds in water. The assembly can be combined with electronegative anions through electrostatic interaction by exchanging counter ions, and the supermolecular assembly can stably exist in water to avoid escaping of anion compounds from the solid assembly, so the supermolecular assembly has a high adsorption efficiency; multivalent positive charges exist in the object molecule, so the anion adsorption speed of the supermolecular assembly is fast, and the anion compounds in water can be rapidly removed; and a preparation method of the supermolecular assembly has the advantages of simplicity, easy enforcement and low material cost, and the supermolecular assembly has wide application in removal of anion pollutants in water.

Description

technical field [0001] The invention relates to solid material adsorption technology, in particular to a porous supramolecular assembly based on cucurbit [8] urea and a preparation method thereof. Background technique [0002] The bottom-up approach to construct supramolecular nanostructures usually involves self-organization between building blocks. The process of self-assembly was originally a description of biological processes, and now it has become a very important construction method in the fields of supramolecular chemistry and material chemistry. In the past few decades, the construction of functional nanomaterials through supramolecular self-assembly has become the unremitting goal of supramolecular chemists. Through the special design of small molecule building blocks, such supramolecular nanoassemblies can be used in drug delivery, gene carrier, sensing, catalysis and other fields. A variety of non-covalent forces are used to construct supramolecular nanostructu...

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Problems solved by technology

Although cucurbit[8]uril has been successfully applied to the bonding of various guest molecules and the construction of supramolecular assemblies, most of the supramolecular assembly systems constructed by cucurbit[8]uril are concentrated in the solution state or limited to soft materials. However, there are relatively few reports on the application of supramolecular assemblies constructed by cucurbit[8]urea as solid materials

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