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Dysprosium complex of n-hydroxyphthalimide and preparation method thereof

A technology of dysprosium hydroxyphthalimide and hydroxyphthalimide is applied in the field of magnetic materials to achieve the effects of improving performance and optimizing synthesis routes

Active Publication Date: 2021-05-25
SHAOYANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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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.

Method used

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  • Dysprosium complex of n-hydroxyphthalimide and preparation method thereof
  • Dysprosium complex of n-hydroxyphthalimide and preparation method thereof
  • Dysprosium complex of n-hydroxyphthalimide and preparation method thereof

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Embodiment 1

[0020] Embodiment 1: take by weighing Dy(NO 3 ) 3 ·5H 2 O (0.1 mmol, 0.0439 g), fully dissolved with 0.5 mL DMF, added to the glass tube containing N-hydroxy-1,8-naphthalimide (0.05 mmol, 0.0106 g) , shake the glass tube to dissolve the HL weighed in the tube completely; after the solution in the tube turns into a light yellow clear liquid, add 0.5 mL CH 3 OH and 0.5 mL CH 3 CN, shake well, let stand. Subsequently, while evacuating, the other end of the glass tube was sealed with a liquefied gas flame. Place it in an oven at 60°C for reaction, take it out three days later (or place it in an oven at 80°C for reaction, take it out after 24 hours), and slowly cool down in the incubator for 24 hours to obtain yellow regular cuboid crystals; wash A pure regular single crystal was selected and dried naturally to obtain the N-hydroxyphthalimide dysprosium complex. The yield was 82% based on HL.

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Abstract

N-hydroxyphthalimide dysprosium complex and preparation method thereof, its chemical formula is: [Dy 2 (HPI) 2 (NO 3 ) 4 (DMF) 2 ], HPI is N-hydroxyphthalimide decapitating a hydrogen ion. Its preparation method is: weigh Dy(NO 3 ) 3 ·5H 2 Put O and N-hydroxy-1,8-naphthalimide in a hard glass tube, add an organic solvent, shake well, then vacuum seal, react at 60-80°C for 1-3 days, take it out Slowly cool down to room temperature, wash and select a pure regular single crystal, and dry naturally to obtain the N-hydroxyphthalimide dysprosium complex. The invention prepares the N-hydroxyphthalimide dysprosium complex from the selection of the rare earth ion, the design of the single-molecule magnet and the optimization of the synthesis route. Improved performance of rare-earth single-molecule magnets. The complex is a 4f metal complex with slow relaxation behavior, and has potential application value in the fields of high-density magnetic memory and magnetic thin film.

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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F5/00H01F1/42
CPCC07B2200/13C07F5/003H01F1/42
Inventor 李小芳
Owner SHAOYANG UNIV
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