A preparation method of magnetoelectric nanocomposite material based on bio-assisted self-assembly

A nanocomposite material and self-assembly technology, applied in nanotechnology for materials and surface science, material selection, manufacturing/processing of electromagnetic devices, etc. Coupling efficiency and other issues to achieve high surface-to-body ratio and orderly structure

Active Publication Date: 2018-12-18
ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
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Problems solved by technology

However, such methods for preparing nanocomposite structures cannot precisely control parameters such as particle size and particle distance, resulting in random free distribution of deposited particles on the substrate, and low surface-to-volume ratio (Surface-to-volume ratio) during interphase coupling. ) affects the magnetoelectric coupling efficiency

Method used

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  • A preparation method of magnetoelectric nanocomposite material based on bio-assisted self-assembly
  • A preparation method of magnetoelectric nanocomposite material based on bio-assisted self-assembly
  • A preparation method of magnetoelectric nanocomposite material based on bio-assisted self-assembly

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Embodiment 1

[0032] A method for preparing a magnetoelectric nanocomposite material based on bio-assisted self-assembly, comprising the following steps:

[0033] Step 1: Azido-modified ferromagnetic / ferroelectric nanoparticles

[0034] In a glove box filled with nitrogen, 1 g of BTO nanoparticles and 1 g of CNFO nanoparticles were respectively immersed in cuvettes containing 4-penten-1-ol solution, and irradiated with 254 nm ultraviolet light at room temperature of 25 ° C. After 15 hours in the cuvette, the 4-penten-1-ol molecules are attached to the surface of the nanoparticles due to the breakage of the double bond of the olefin group, washed with methanol, chloroform and isopropanol in sequence, centrifuged, and dried in vacuum for 12 hours Two kinds of powders were obtained respectively.

[0035] Then add the above two powders into a mixed solvent prepared by 7mL of dichloromethane, 0.7mL of triethylamine and 0.7mL of methanesulfonyl chloride, place in ice bath for 1 hour, centrifuge,...

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Abstract

The invention belongs to the technical field of electronic components, A preparation method of magnetoelectric nanocomposite material based on bio-assisted self-assembly is disclosed, Azido-modified ferromagnetism was synthesized firstly, ferroelectric nanoparticles, CuAAC clicking reaction was carried out under the catalysis of Cu (II), 5-terminal hexynyl-modified RNA and azido-modified ferromagnetism, Ferroelectric nanoparticles react and polymerize under certain conditions, so that the surface-modified ferromagnetic and ferroelectric nanoparticles of azide group are bonded with RNA strand,and finally, ferromagnetic and ferroelectric nanoparticles bonded with RNA strand are mixed to obtain magneto-electric nanocomposites. The magneto-electric nano composite material prepared by the invention has an orderly structure, has a higher surface-to-body ratio, exhibits a remarkable magnetic dielectric effect under the action of an external bias magnetic field, and provides a broad application prospect for the magneto-electric nano material in high-density information storage, drug transportation, spin electronic device and biological device.

Description

technical field [0001] The invention belongs to the technical field of electronic components, and in particular relates to a preparation method of a magnetoelectric nanocomposite material based on bio-assisted self-assembly. Background technique [0002] From the perspective of components, magnetoelectric materials can be divided into two categories: single-phase and composite. By the end of the 20th century, more than 50 kinds of single-phase compounds with magnetoelectric effect have been found, and in addition, there are dozens of solid solutions with this property. However, single-phase magnetoelectric materials are difficult to be practically applied because of their low Curie temperature and small magnetoelectric coefficient. From the end of the 20th century to the present, magnetoelectric composite materials have achieved rapid development, including multilayer structures and film structures. At the same time, theoretical research on magnetoelectric multiferroic mate...

Claims

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Application Information

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IPC IPC(8): H01L43/12H01L43/10B82Y30/00B82Y25/00
CPCB82Y25/00B82Y30/00H10N50/85H10N50/01
Inventor 张吉涛张庆芳陈冬雨李康朱威威姜利英王晓雷耿盛涛郑晓婉曹玲芝
Owner ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
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