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Preparation method of organic chiral ferromagnetic nanocrystals

A magnetic nanometer and organic iron technology, applied in nanotechnology, crystal growth, nanotechnology and other directions, can solve the problems of organic chiral magnets that have not been reported, and achieve the effect of good application prospects.

Active Publication Date: 2021-04-09
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, currently, no organic chiral magnets with chiral enantiomeric differences have been reported

Method used

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  • Preparation method of organic chiral ferromagnetic nanocrystals
  • Preparation method of organic chiral ferromagnetic nanocrystals
  • Preparation method of organic chiral ferromagnetic nanocrystals

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Experimental program
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Effect test

Embodiment 1

[0031] The preparation method of the chiral organic ferromagnetic nanocrystal based on Fe-TPPS comprises steps as follows:

[0032] (1) Fe-TPPS is dissolved in methanol solvent, and the concentration of this solution is 2 * 10 -6 mol / L.

[0033] (2) S-DAC is dissolved in chloroform solvent, and the concentration of this solution is 5 * 10 -7 mol / L.

[0034] (3) R-DAC is dissolved in chloroform solvent, and the concentration of this solution is 5 * 10 -7 mol / L.

[0035] (4) Add 0.5 ml of Fe-TPPS methanol solution to 4 ml of S-DAC in chloroform and stir vigorously. Immediately after mixing, dark green flocs are formed, which are right-handed Fe-TPPS organic ferromagnetic nanocrystals.

[0036] (5) Add 0.5 ml of Fe-TPPS methanol solution to 4 ml R-DAC in chloroform solution, and vigorously stir. Immediately after mixing, dark green flocs are formed, which are left-handed Fe-TPPS organic ferromagnetic nanocrystals.

Embodiment 2

[0038] The preparation method of the chiral organic ferromagnetic nanocrystal based on Fe-TPPS comprises steps as follows:

[0039] (1) Fe-TPPS is dissolved in methanol solvent, and the concentration of this solution is 2 * 10 -6 mol / L.

[0040] (2) S-DAC is dissolved in chloroform solvent, and the concentration of this solution is 2.5×10 -7 mol / L.

[0041] (3) R-DAC is dissolved in chloroform solvent, and the concentration of this solution is 2.5 * 10 -7 mol / L.

[0042] (4) Add 0.5 ml of Fe-TPPS methanol solution to 4 ml of S-DAC in chloroform and stir vigorously. Immediately after mixing, dark green flocs are formed, which are right-handed Fe-TPPS organic ferromagnetic nanocrystals.

[0043] (5) Add 0.5 ml of Fe-TPPS methanol solution to 4 ml R-DAC in chloroform solution, and vigorously stir. Immediately after mixing, dark green flocs are formed, which are left-handed Fe-TPPS organic ferromagnetic nanocrystals.

Embodiment 3

[0045] The preparation method of the chiral organic ferromagnetic nanocrystal based on Fe-TPPS comprises steps as follows:

[0046] (1) Fe-TPPS is dissolved in methanol solvent, and the concentration of this solution is 2 * 10 -6 mol / L.

[0047] (2) S-DAC is dissolved in chloroform solvent, and the concentration of this solution is 7.5×10 -7 mol / L.

[0048] (3) R-DAC is dissolved in chloroform solvent, and the concentration of this solution is 7.5×10 -7 mol / L.

[0049] (4) Add 0.5 ml of Fe-TPPS methanol solution to 4 ml of S-DAC in chloroform and stir vigorously. Immediately after mixing, dark green flocs are formed, which are right-handed Fe-TPPS organic ferromagnetic nanocrystals.

[0050](5) Add 0.5 ml of Fe-TPPS methanol solution to 4 ml R-DAC in chloroform solution, and vigorously stir. Immediately after mixing, dark green flocs are formed, which are left-handed Fe-TPPS organic ferromagnetic nanocrystals.

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Abstract

The invention relates to a preparation method of organic chiral ferromagnetic nanocrystals, which comprises the following steps: mixing a methanol solution of Fe-TPPS with a chloroform solution of S-DAC or a chloroform solution of R-DAC, and stirring to react, thereby obtaining right-handed chiral Fe-TPPS organic ferromagnetic nanocrystals or left-handed chiral Fe-TPPS organic ferromagnetic nanocrystals. When the molar ratio of Fe-TPPS to the chiral induction factor DAC is 1: 2 and the volume ratio of the methanol solution of Fe-TPPS to the chloroform solution of DAC is 1: 8, the circular dichroism signal is the strongest, and the chiral structure is the best. The organic ferromagnetic nanocrystal prepared by the method has considerable magnetic moment, and is an appropriate carrier for researching the magneto-optical coupling effect of an organic material.

Description

technical field [0001] The invention provides a method for preparing organic chiral ferromagnetic nanocrystals, belonging to the technical field of crystal growth Background technique [0002] Chirality is a basic attribute that exists widely in nature. If a substance itself cannot coincide with its mirror image, it is said that the substance has chirality. Compared with other materials, chiral materials have some special optical properties, such as optical rotation, circular dichroism, circularly polarized luminescence, etc. These properties have broad application prospects in the fields of photodetectors and 3D imaging. On the other hand, with the development of spintronics, spin phenomena in organic materials have gradually attracted attention, such as the chirality-induced spin selection effect. This effect refers to the selectivity of chiral materials for the spin of transported electrons, and electrons with different spin orientations pass through chiral materials at...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B7/14C30B29/54B82Y30/00B82Y40/00
CPCC30B7/14C30B29/54B82Y30/00B82Y40/00
Inventor 秦伟高铭升
Owner SHANDONG UNIV
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