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Ten-core dysprosium cluster compound single-molecular magnet and preparation method thereof

A technology of single-molecule magnets and molecular magnets, applied in the field of decanuclear dysprosium cluster single-molecule magnets and its preparation, can solve problems such as synthesis difficulties and achieve great application value

Inactive Publication Date: 2018-12-21
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the difficulty of synthesis, rare-earth single-molecule magnets with high cores, especially those with a core number greater than or equal to 10, are still relatively rare. Existing examples only include {Dy 24 } with {Dy 26 } and other limited examples

Method used

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  • Ten-core dysprosium cluster compound single-molecular magnet and preparation method thereof
  • Ten-core dysprosium cluster compound single-molecular magnet and preparation method thereof
  • Ten-core dysprosium cluster compound single-molecular magnet and preparation method thereof

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Experimental program
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Embodiment

[0022] 1. Preparation of decanuclear dysprosium cluster single-molecule magnet:

[0023] (1) 0.5mmol of analytically pure Dy(NO 3 ) 3 ·6H 2 O and 0.05 mmol ligand H 4 ovpho into a Teflon-lined 25 mL stainless steel reaction vessel.

[0024] (2) Add 6 mL of analytically pure CH to the product obtained in step (1) 3 CN with 3 mL of analytically pure CH 3 OH was used as a solvent, and after stirring at room temperature for 30 minutes, three drops of analytically pure triethylamine were added dropwise, and stirring was continued for 30 minutes.

[0025] (3) Seal the reaction kettle after the stirring in step (2), place it in an oven at 80° C. for constant temperature reaction for 3 days, then cool slowly to room temperature, and separate the solid after taking out the product.

[0026] (4) Wash the solid obtained in step (3) three times with anhydrous methanol, and the obtained orange-red-yellow flaky crystals are decanuclear dysprosium cluster single-molecule magnets.

[0...

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Abstract

The invention discloses a ten-core dysprosium cluster compound single-molecular magnet and a preparation method thereof. The ten-core dysprosium cluster compound single-molecular magnet has the chemical formula as [Dy10(ovpho)4(NO3)4(CH3O)3(mu4-O)2(mu3-OH)2(mu2-OH)(H2O)4].8H2O. The ten-core dysprosium cluster compound single-molecular magnet is crystallized in an orthorhombic system Pbcn space group and is structurally formed by two edge-shaped {Dy4} tetrahedron elements and two {Dy2} double-core units located on two sides of the tetrahedron elements. The preparation method comprises the stepsof adopting an H4ovpho ligand and Dy(NO3)3.6H2O with the molar ratio being 1:3 as raw materials, adopting methanol and acetonitrile as solvents, adopting triethylamine as an alkaline matter, stirring, carrying out solvothermal reaction, separating, and washing solids. The ten-core dysprosium cluster compound single-molecular magnet provided by the invention is simple in process, low in cost, easyto control chemical components, good in repeatability and high in yield. Meanwhile, the cluster compound size reaches to the nano scale and is the rare high-core nano single-molecular magnet.

Description

technical field [0001] The invention relates to the preparation of molecular magnetic materials, in particular to a decanuclear dysprosium cluster single-molecule magnet and its preparation method. Background technique [0002] Single-molecule magnets are composed of independent single molecules with little interaction in the magnetic sense. Each molecule can be regarded as a small magnetic unit and exhibits superparamagnetic behavior at the blocking temperature. In particular, it has a magnetic bistability, which can exhibit the hysteresis phenomenon of traditional magnets, so it has potential application prospects in ultra-density information storage, quantum computers, and molecular spintronics; on the other hand, single-molecule magnets It exhibits the quantum tunneling effect of microscopic particles at low temperature, which has the common characteristics of quantum mechanics and classical mechanics. Therefore, single-molecule magnets are also an ideal model for study...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F5/00H01F1/42
CPCC07F5/003C07B2200/13H01F1/42
Inventor 王凯苏森达欧阳效洺梁福沛
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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