Graphene paramagnetic resonance probe

A paramagnetic resonance and graphene technology, applied in inorganic chemistry, non-metallic elements, carbon compounds, etc., can solve the problems of difficult to modify functional groups, weak hydrophilicity, etc., and achieve strong external magnetic field response, good durability, and production. Highly controllable effect

Inactive Publication Date: 2019-02-19
黄爱强
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the technical problems of the existing graphene / ferric oxide superparamagnetic nanocomposite material with weak hydrophilicity and difficult modification of functional groups, and provide a graphene paramagnetic resonance probe and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A graphene paramagnetic resonance probe, which is composed of functionalized graphene and superparamagnetic material nanoparticles, the superparamagnetic material nanoparticles are one of ferroferric oxide or ferric oxide Or any combination of the two, superparamagnetic material nanoparticles are supported on the surface of functionalized graphene, and the particle size of each superparamagnetic material nanoparticle is less than 25 nanometers; functionalized graphene contains multiple carboxyl groups and Polypropyleneamine functionalized graphene with multiple amino groups, polyacrylic acid functionalized graphene with multiple carboxyl groups and multiple amino groups, polyethyleneimine functionalized graphene with multiple carboxyl groups and multiple amino groups, or multiple carboxyl groups One or several arbitrary combinations of Tween 20 functionalized graphene with multiple amino groups.

[0018] A preparation method of graphene paramagnetic resonance probe include...

Embodiment 2

[0027] A graphene paramagnetic resonance probe, the graphene paramagnetic resonance probe is composed of functionalized graphene and superparamagnetic material nanoparticles, the superparamagnetic material nanoparticles are ferroferric oxide, superparamagnetic material nanoparticles Loaded on the surface of functionalized graphene, and the particle size of each superparamagnetic material nanoparticle is less than 25 nanometers; functionalized graphene is polypropylene amine functionalized graphene containing multiple carboxyl groups and multiple amino groups, and contains multiple One of polyacrylic acid functionalized graphene with carboxyl and multiple amino groups, polyethyleneimine functionalized graphene with multiple carboxyl groups and multiple amino groups, or Tween 20 functionalized graphene with multiple carboxyl groups and multiple amino groups .

[0028] A preparation method of graphene paramagnetic resonance probe includes the following steps:

[0029] (1) Add functio...

Embodiment 3

[0037] A graphene paramagnetic resonance probe is composed of functionalized graphene and superparamagnetic material nanoparticles. The superparamagnetic material nanoparticles are a combination of ferroferric oxide and ferric oxide, Nanoparticles of superparamagnetic material are supported on the surface of functionalized graphene, and the particle size of each nanoparticle of superparamagnetic material is less than 25 nanometers; functionalized graphene is a polypropylene amine functionalized with multiple carboxyl groups and multiple amino groups Graphene, polyacrylic acid functionalized graphene containing multiple carboxyl groups and multiple amino groups, polyethyleneimine functionalized graphene containing multiple carboxyl groups and multiple amino groups, or Tween 20 functionalized graphene containing multiple carboxyl groups and multiple amino groups A combination of chemical graphene.

[0038] A preparation method of graphene paramagnetic resonance probe includes the f...

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Abstract

The invention discloses a graphene paramagnetic resonance probe. According to the probe, superparamagnetic ferriferrous oxide and ferric oxide nano particles are loaded on the surface of functionalized graphene, the particular diameter is smaller than 25 nm, wherein the functionalized graphene is one of or the random combination of polyacrylamide functionalized graphene containing multiple carboxyls and multiple amino groups, polyacrylic acid functionalized graphene containing multiple carboxyls and multiple amino groups, polyethyleneimine functionalized graphene containing multiple carboxylsand multiple amino groups, or tween 20 functionalized graphene containing multiple carboxyls and multiple amino groups. According to a composite material, the particular diameter of the nano particlesis smaller than 25 nm, the nano particles have the characteristic of superparamagnetism and stronger outer magnetic field responsiveness, excellent dispersion can be obtained in an aqueous solution,biomacromolecules can be further modified, the production controllability is high, the purity is high, and the effect is good.

Description

Technical field [0001] The invention relates to a functionalized graphene / superparamagnetic material nanoparticle and a preparation method thereof, and belongs to the technical field of graphene magnetic composite materials. Background technique [0002] The superparamagnetic iron oxide nanoparticles have the advantages of no coercivity and remanence at room temperature, non-toxic, metabolizable in the body, and good controllability under magnetic fields. Graphene is a single-layer structure of carbon atoms bonded by sp2 hybrid orbitals. It has high conductivity, high specific surface area, unique graphitized planar structure and low cost. The graphene nanocomposite formed by graphene and nanomaterials has the advantages of graphene and functional nanomaterials, so that it exhibits exceptionally excellent performance in terms of sensing, catalysis, electrical, magnetic, and optoelectronic properties. Among them, graphene / iron oxide superparamagnetic nanocomposite materials are w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G49/08C01G49/06C01B32/194B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00C01B32/194C01G49/06C01G49/08C01P2004/64C01P2006/42
Inventor 黄爱强黄爱毅刘伟林黎露清梁军梅孙家程
Owner 黄爱强
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