Histidine derived ligand compound and preparation method thereof and application

Abstract

The invention discloses a histidine derived ligand compound and a preparation method thereof and application. The preparation method comprises the steps of first sequentially adding blended solution of sodium hydroxide solid, L-histidine, benzoic acid-4-formaldehyde and ethanol into a container, reacting for 20-40 min with stirring at room temperature, and obtaining yellow solution; performing ice-bath treatment on the yellow solution until yellow completely fades, and obtaining a colorless solution; evaporating the colorless solution until plenty of white crystal arises, taking the white crystal, dissolving the white crystal and then adding diluted hydrochloric acid to perform acidification to make pH be 6-7, fully precipitating the white precipitate, sequentially performing standing and suction filtration treatment, finally taking filter cake and sequentially using water, ethanol and diethyl ether for washing to obtain a crude product, taking and drying the crude product, and obtaining the histidine derived ligand compound. L-histidine is adopted as a raw material, L-amino acid serves as a main chiral ligand, benzoic acid-4-formaldehyde is added to serve as an auxiliary ligand, and the novel chiral histidine derived ligand is synthesized on the premise of reserving inherent chirality and coordinating group-carboxyl.

Description

technical field [0001] The invention relates to the field of molecular materials, in particular to a histidine-derived ligand compound and its preparation method and application. Background technique [0002] At present, the number of chiral organic ligands used to construct organic-inorganic hybrid coordination materials is relatively small. But in nature, especially in living organisms, chiral organisms are ubiquitous. As an organism with natural chirality, natural amino acids are rich in raw materials, and they have also been reported as chiral organic ligands to construct chiral coordination materials. For example, the use of L-amino acids and formed Schiff base organisms etc. as ligands to construct coordination networks has proven to be an option. However, structural analysis shows that the complexes constructed by such ligands mostly exist in the form of single, multinuclear or one-dimensional chain structures. The reason is that the amino acid ligand has only a fe...

AI Technical Summary

Problems solved by technology

The reason is that the amino acid ligand has only a few coordination sites, and the coordination positions of the carboxyl group and the amino group are close to each other, and they tend to combine with various metal ions in the NO chelation coordination mode to form The relatively stable chelating ring space configuration finally hinders the extension of the coordination structure to the high-dimensional space configuration

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