Two-dimensional spin crossover molecular magnetic material and preparation method thereof

Abstract

A two-dimensional spin crossover molecular magnetic material based on a V-shaped bidentate picolinamide ligand is formed by a [FeL2(SCN)2] (L represents 5-methyl-1,3-phenyldimethyl-(bis-4-pyridyl)amide) neutral two-dimensional network, a crystal water molecule and a crystal methanol molecule. The above two-dimensional coordination polymer can realize high and low spin transition through temperature change or light radiation, is a typical temperature and illumination dual-controlled spin crossover molecular magnetic material, and has potential application values in the field of molecular pyromagnetic and photomagnetic switch materials.

Description

technical field [0001] The invention belongs to the technical field of synthesis of spin-crossed magnetic materials in molecular magnetic materials, and specifically relates to a bivalent iron two-dimensional spin-crossed coordination polymer magnetic material based on a V-type bidentate pyridine amide ligand and a preparation method thereof . Background technique [0002] In the past two or three decades, molecular-based magnetic materials have been developed very rapidly. Generally, molecular-based magnetic materials are defined as useful magnetic substances that mainly have a molecular framework structure through the combination of molecules or charged molecules. Unlike traditional magnetic materials, molecular-based magnetic materials have the advantages of small size, light relative density, diverse structures, and easy composite processing and molding. They may be used as materials for making spacecraft, microwave absorption stealth, electromagnetic shielding, and inf...

AI Technical Summary

Problems solved by technology

However, it is still a great challenge to design and construct such bistable spin-crossed molecular magnetic materials with special structures and properties, especially spin-switching complexes with multiple perturbation factors.

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