4-((4-羧基苯基)氨基)苯甲酸的氢键有机框架的构筑

Hydrogen bonded organic framework (HOFs) is a new kind of porous crystal material, which is often used in gas adsorption and separation, catalysis, sensing, proton conduction and other aspects due to its large number of well-defined pores. The carboxyl groups can form directional double hydrogen bonds between them and are therefore widely used as building block for the HOF construction. The aim of this paper is to synthesise 4-((4-carboxyphenyl)amino)benzoic acid and to construct its HOF crystals. Using 4-Methoxycarbonylbenzeneboronic acid as the starting material, we successfully prepared the target product in a three-step reaction and characterised its structure by NMR. The single crystal structure was analysed, the hydrogen bonding between the molecules and the intermolecular stacking were described.