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Zero field dysprosium single ion magnet and preparation method and application thereof

A single-ion, magnet technology, applied in organic chemistry methods, chemical instruments and methods, preparation of organic compounds, etc., can solve problems such as low yield, easy decomposition or weathering, instability, etc., to achieve safe, simple and reproducible processes. Good performance and stability

Pending Publication Date: 2022-02-11
JIANGSU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the synthesis of these high-performance dysprosium-based single-ion magnets often needs to be carried out under extreme conditions of anhydrous and oxygen-free, so it is inconvenient to control the synthesis, with poor reproducibility and low yield.
And some of these materials are unstable at room temperature and air, and are easy to decompose or weather

Method used

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  • Zero field dysprosium single ion magnet and preparation method and application thereof
  • Zero field dysprosium single ion magnet and preparation method and application thereof
  • Zero field dysprosium single ion magnet and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0023] The preparation method of zero-field dysprosium single-ion magnet comprises: 2,6-dichloro-4-nitrophenol (HOPhCl 2 NO 2 ) (1mmol) was dissolved in 10mL tetrahydrofuran, NaH (1mmol) was added to it, and it was ultrasonicated for 10min until no bubbles were generated, and DyCl 3 (0.5mmol) was added therein, stirred for 12h, the solution was a yellow suspension, filtered to remove the precipitate, and the filtrate was spin-dried to obtain a yellow solid, which was then dissolved in 10mL of acetonitrile:methanol (3:1) mixed solvent, and Add pentaethylene glycol (EO5) (0.5mmol) dropwise, stir for 2h, and spin dry to obtain a yellow oil, which is dissolved in 5mL of dichloromethane, transferred to a test tube, and 15mL of n-hexane is slowly added to it, and left to stand for two-phase diffusion In 2 days, the dysprosium single ion magnet was obtained.

[0024] The yield of the dysprosium single-molecule magnet prepared in this example is 64.4%.

Embodiment 2

[0026] The preparation method of zero-field dysprosium single-ion magnet comprises: 2,6-dichloro-4-nitrophenol (HOPhCl 2 NO 2 ) (1.5mmol) was dissolved in 15mL tetrahydrofuran, NaH (1.5mmol) was added to it, and it was ultrasonicated for 10min until no bubbles were generated, and DyCl 3 (0.5mmol) was added therein, stirred for 12h, the solution was a yellow suspension, filtered to remove the precipitate, and the filtrate was spin-dried to obtain a yellow solid, which was dissolved in 15mL of acetonitrile:methanol (3:1) mixed solvent, and Add pentaethylene glycol (EO5) (0.7mmol) dropwise, stir for 2h, and spin dry to obtain a yellow oil, dissolve it in 7mL of dichloromethane, transfer it to a test tube, slowly add 20mL of n-hexane into it, let it stand for two-phase diffusion After 4 days, the dysprosium single ion magnet was obtained.

[0027] The yield of the dysprosium single-molecule magnet prepared in this example is 67.2%.

[0028] The dysprosium single-ion magnet prep...

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Abstract

The invention discloses a zero field dysprosium single ion magnet and a preparation method and application thereof, the chemical formula of the dysprosium single ion magnet is [Dy (EO5) (OPhCl2NO2) 2] (OPhCl2NO2), EO5 is pentaethylene glycol, and HOPhCl2NO2 is 2, 6-dichloro-4-nitrophenol. Compared with the prior art, the zero field dysprosium single ion magnet has the following advantages: (1) the dysprosium single ion magnet can show typical slow relaxation behavior without adding a field, has the characteristics of a single molecule magnet, and can be used as a molecule based magnetic material in novel high-density information storage equipment (such as an optical disk, a hard disk and the like); (2) the dysprosium single ion magnet is not weathered in air and has good stability; and (3) the method is safe and simple in process, high in controllability and good in reproducibility.

Description

technical field [0001] The invention belongs to the technical field of magnetic materials, and relates to a single-molecule magnet material, specifically a zero-field dysprosium single-ion magnet and its preparation method and application. Background technique [0002] In the prior art, the number of integrations of electronic devices increases exponentially while the size of the devices continues to decrease. The continuous development of this integration and miniaturization will be limited by the processing technology and cost, which will cause insurmountable obstacles to the integration technology of modern electronic devices. Therefore, the research and development of molecular-based magnetic materials has become a hot spot for scientists. Single-molecule magnets (SMMs) are an important field of molecular-based magnetic materials research, and have great application potential in high-density information storage, quantum computers, and molecular spinology. [0003] Lant...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F5/00C07C201/12C07C201/16C07C205/26H01F1/42G11C11/02
CPCC07F5/003C07C201/12C07C201/16C07C205/26H01F1/42G11C11/02C07B2200/13
Inventor 陈磊程志杰景蓉谭鹏飞蔡星伟袁爱华
Owner JIANGSU UNIV OF SCI & TECH
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