Dysprosium monomolecular magnet as well as synthesis method and application thereof

A technology of single-molecule magnets and molecular magnets, which is applied in the field of dysprosium single-molecule magnets and their synthesis, can solve problems such as easy decomposition or weathering, inconvenient control of synthesis, poor repeatability, etc., and achieve high controllability, high purity and high yield , good stability

Active Publication Date: 2021-03-12
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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  • Dysprosium monomolecular magnet as well as synthesis method and application thereof
  • Dysprosium monomolecular magnet as well as synthesis method and application thereof
  • Dysprosium monomolecular magnet as well as synthesis method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A method for synthesizing a dysprosium single-molecule magnet, comprising:

[0029] Step 1, DyCl 3 ·6H 2 O (1mmol) and organic ligand Ph 3 PO (4mmol) was stirred and mixed in 10mL ethanol solution, and allowed to react for 10min;

[0030] Step two, HOPhCl 2 NO 2 (3mmol) was dissolved in 9mL acetonitrile, triethylamine (4mmol) was added thereto, allowed to react for 5min, and then the mixed solution in step 1 was added to produce a pale yellow precipitate;

[0031] Step 3: Dissolve the yellow precipitate in 4 mL of dichloromethane, transfer it to a test tube, slowly drop in 10 mL of n-hexane to form two-phase separation, and obtain the crystal of a dysprosium single-molecule magnet after 2 days.

[0032] The yield of the dysprosium single-molecule magnet prepared in this example is 61.8%.

Embodiment 2

[0034] A method for synthesizing a dysprosium single-molecule magnet, comprising:

[0035] Step 1, DyCl 3 ·6H 2 O (1mmol) and organic ligand Ph 3 PO (4mmol) was stirred and mixed in 10mL ethanol solution, and allowed to react for 10min;

[0036] Step two, HOPhCl 2 NO 2 (3mmol) was dissolved in 9mL acetonitrile, triethylamine (2mmol) was added thereto, allowed to react for 5min, and then the mixed solution in step 1 was added to produce a yellow precipitate;

[0037] Step 3. Dissolve the yellow precipitate in 5 mL of dichloromethane, transfer it to a test tube, slowly drop in 15 mL of n-hexane to form two-phase separation, and obtain the crystal of the dysprosium single-molecule magnet after 2 days.

[0038] The yield of the dysprosium single-molecule magnet prepared in this example is 60.4%.

Embodiment 3

[0040] A method for synthesizing a dysprosium single-molecule magnet, comprising:

[0041] Step 1, DyCl 3 ·6H 2 O (1mmol) and organic ligand Ph 3 PO (3mmol) was stirred and mixed in 10mL ethanol solution, and allowed to react for 10min;

[0042] Step two, HOPhCl 2 NO 2 (3mmol) was dissolved in 5mL acetonitrile, triethylamine (1mmol) was added thereto, allowed to react for 5min, and then the mixed solution in step 1 was added to produce a pale yellow precipitate;

[0043] Step 3. Dissolve the yellow precipitate in 6 mL of dichloromethane, transfer it to a test tube, slowly drop in 20 mL of n-hexane to form two-phase separation, and obtain the crystal of the dysprosium single-molecule magnet after 2 days.

[0044] The yield of the dysprosium single-molecule magnet prepared in this example is 60.8%.

[0045] The characterization of the dysprosium single-molecule magnet prepared in this example is as follows:

[0046] (1) Determination of crystal structure

[0047] Select ...

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Abstract

The invention belongs to the technical field of rare earth metal coordination chemistry, and relates to a dysprosium monomolecular magnet with a simple structural formula of Dy(Ph3PO)3(OPhCl2NO2)3, wherein Ph3PO is triphenylphosphine oxide, and HOPhCl2NO2 is 2,6-dichloro-4-nitrophenol. The synthesis method comprises the steps of adding triethylamine into an acetonitrile solution containing 2,6-dichloro-4-nitrophenol (HOPhCl2NO2), uniformly stirring, adding into an ethanol solution containing dysprosium chloride hexahydrate (DyCl3.6H2O) and triphenylphosphine oxide (Ph3PO), fully reacting, finally dissolving the generated precipitate into dichloromethane, slowly adding n-hexane into dichloromethane, and standing, and carrying out two-phase diffusion to obtain the hexa-coordinated dysprosiummonomolecular magnet. The preparation process is safe, simple, high in controllability and good in reproducibility, and the prepared complex is good in stability, high in purity and high in yield, can show typical slow relaxation behaviors under the condition that an external magnetic field is 0.04T, has the characteristics of a monomolecular magnet, and can be used as a molecular-based magneticmaterial in novel high-density information storage equipment such as an optical disk and a hard disk.

Description

technical field [0001] The invention belongs to the technical field of rare earth metal coordination chemistry, and relates to a dysprosium single-molecule magnet, its synthesis method and application. Background technique [0002] Magnetic materials are widely used, and their application market exceeds that of semiconductor materials; among them, information storage is one of the largest application fields of magnetic materials. With the development of information technology, people demand that the number of integrated electronic devices increases exponentially while the size of the devices decreases continuously. 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. [0003] Single-molecule...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F19/00H01F1/42H01F41/02
CPCC07F19/00H01F1/42H01F41/02
Inventor 陈磊张春洋谭鹏飞蔡星伟袁爱华
Owner JIANGSU UNIV OF SCI & TECH
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