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Dispersion liquid with adjustable optical properties and preparation method thereof

A technology of optical properties and dispersion liquid, applied in chemical instruments and methods, inorganic chemistry, oxides of ferrous iron, etc., can solve the problem of immature inorganic liquid crystal synthesis technology, difficult application of inorganic mineral liquid crystal, and optical properties of liquid crystal phase Uncontrollable and other problems, to achieve the effects of simple and controllable optical properties, short preparation cycle, and great application potential

Active Publication Date: 2021-08-24
CHINA UNIV OF GEOSCIENCES (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the synthesis technology of inorganic liquid crystals is not mature, and the optical properties of the liquid crystal phase are uncontrollable, so it is difficult to apply inorganic mineral liquid crystals to real life
Feng Lin recently reported that the diamagnetism of graphene can be used to realize the controllable magnetron orientation and optical properties of graphene sheets, but the high cost of graphene raw materials determines that this material cannot be applied on a large scale.

Method used

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  • Dispersion liquid with adjustable optical properties and preparation method thereof
  • Dispersion liquid with adjustable optical properties and preparation method thereof
  • Dispersion liquid with adjustable optical properties and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment approach

[0039] According to one embodiment of the present invention, the anisotropic nanostructure is a two-dimensional non-(intrinsically) magnetically anisotropic nanostructure.

[0040] In a further preferred embodiment, the anisotropic nanostructure is selected from one or both of non-magnetic nanosheets or nanodisks.

[0041] In a further preferred embodiment, non-magnetic anisotropic nanostructures are non-magnetic nanosheets.

[0042] According to the present invention, the nonmagnetic anisotropic nanostructure is selected from inorganic materials, including one or more of mineral materials such as montmorillonite, gibbsite, laponite and vermiculite, preferably including montmorillonite, more It is preferably montmorillonite, for example, there are crystal plane diffraction peaks at 2θ of 7.10° and 19.7° in the XRD spectrum of the montmorillonite.

[0043] According to the present invention, it is particularly preferred to choose montmorillonite nanosheets as the non-magnetic ...

Embodiment 1

[0096] Prepare montmorillonite@ferric oxide two-dimensional magnetic nanocomposite, as follows: prepare 100 mL of 1 mg / mL montmorillonite aqueous suspension; pass nitrogen gas into the suspension, keep stirring, and add 1.0 mmol of ferric chloride React with 0.5mmol of ferrous sulfate at 60°C for 5 minutes; continue to add 5mL of ammonia water, react at 60°C for 30 minutes, centrifuge, wash and dry the above suspension to obtain montmorillonite@ferric oxide two-dimensional Magnetic nanocomposites;

[0097] The prepared montmorillonite@iron tetroxide two-dimensional magnetic nanocomposite material was added to 0.001mol / L hydrochloric acid to prepare a 0.125mg / mL dispersion, and stirred evenly to obtain a stable colloidal dispersion;

[0098] Place a magnet 2 cm away from the colloidal dispersion.

Embodiment 2

[0100] The experimental process of Example 1 was repeated, the only difference being that the prepared montmorillonite@ferric oxide two-dimensional magnetic nanocomposite material was added to 0.001mol / L hydrochloric acid to prepare a 0.25mg / mL dispersion.

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Abstract

The invention discloses a magnetic nanocomposite material and a preparation method thereof, as well as a dispersion liquid with adjustable optical properties and a preparation method thereof. The magnetic nanocomposite material includes a magnetically coated anisotropic nanostructure, preferably a magnetically coated coated anisotropic nanostructures. The dispersion with tunable optical properties includes a magnetic nanocomposite. Wherein, the preparation method of the dispersion comprises the following steps: preparing a two-dimensional magnetic nanocomposite material; dispersing the two-dimensional magnetic nanocomposite material in a solution to prepare a colloidal dispersion; applying an external magnetic field to the colloidal dispersion to obtain a Composite dispersions. The preparation method of the invention has simple conditions, short preparation period, low cost, and is easy to realize. The prepared dispersion liquid with adjustable optical properties has high magnetic response and adjustable optical properties, and has great application potential in the field of display devices.

Description

technical field [0001] The invention belongs to the field of functional materials, in particular to a dispersion liquid with adjustable optical properties and a preparation method thereof. Background technique [0002] In recent years, it has aroused strong interest to construct artificial periodic structures by assembling nanomaterials to control electromagnetic waves, such as plasmonic nanomaterials, magnetically responsive nanomaterials, and anisotropic nanomaterials. Such bottom-up assembly methods have been reported, such as electric field actuation, magnetic field actuation, thermal actuation, non-covalent bond actuation, etc. Their ability to assemble into ordered nanostructures determines the sophisticated applications of materials in the field of nano-optoelectronics. [0003] Michael has discovered that gold and silver nanoparticle arrays exhibit local surface plasmon resonance in the visible and near-infrared regions, which can cause strong light absorption and l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B33/40C01G49/08
CPCC01B33/40C01G49/08C01P2002/72C01P2004/01C01P2004/04C01P2006/42C01P2006/60
Inventor 张泽朋付萌
Owner CHINA UNIV OF GEOSCIENCES (BEIJING)
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