N-hydroxyphthalimide dysprosium coordination compound and preparation method thereof

Abstract

The invention provides a N-hydroxyphthalimide dysprosium coordination compound and a preparation method thereof. The coordination compound has a following chemical formula: [Dy2(HPI)2(NO3)4(DMF)2], wherein HPI is N-hydroxyphthalimide of which one hydrogen ion is removed. The preparation method comprises the following steps: weighing Dy(NO3)3.5H2O and N-hydroxy-1,8-naphthalimide in a hard glass tube, adding an organic solvent, performing uniform shaking, performing vacuum sealing, performing a reaction under heating condition at 60-80 DEG C for 1-3 days, taking out the reaction product, performing slow cooling to room temperature, performing washing, and selecting pure regular single crystals, and performing natural drying to obtain the N-hydroxyphthalimide dysprosium coordination compound.The method provided by the invention prepares the N-hydroxyphthalimide dysprosium coordination compound from selection of a rare earth ion, design of a single-molecular magnet and optimization of a synthetic route, and improves the performance of the rare earth single-molecular magnet; and the coordination compound is a 4f metal coordination compound with a slow relaxation behavior, and has potential application value in the fields of high-density magnetic memorizers and magnetic films.

Description

technical field [0001] The invention relates to a magnetic material, in particular to a dysprosium complex of N-hydroxyphthalimide having the behavior of a single-molecule magnet, and to a preparation method of the complex. Background technique [0002] Magnetic materials are widely used in various fields such as medical treatment, aviation, and information technology. As the amount of information continues to grow, it is necessary to quickly process information and store a large amount of information, requiring magnetic storage devices to develop in the direction of large capacity, miniaturization, and high speed. . To this end, the research goal of scientists has gradually shifted from traditional metal oxide and alloy nanomagnets to the development of molecular or atomic scale magnetic storage materials. Since Italian scientists discovered the first single-molecule magnet in 1993, single-molecule magnetic materials have been highly valued by scientists. [0003] Startin...

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Problems solved by technology

However, due to severe quantum tunneling interference, its blocking temperature has encountered difficulties, and it has only recently broken through the liquid nitrogen temperature, but there is still a big gap from practical applications.

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