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Sugarcoated-haws-on-stick shaped one-dimensional gold nano-particle preparation method

A candied fruit-shaped, anionic technology is applied in the field of preparation of one-dimensional gold nanoparticles to achieve the effects of uniform product structure, mild and controllable conditions, and clear product structure

Inactive Publication Date: 2015-01-14
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the products obtained by the above methods are mostly straight gold nanorods.
And some other one-dimensional anisotropic gold nanomaterials, such as sugar-coated gold nanostructures, have not been reported in the literature so far.

Method used

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  • Sugarcoated-haws-on-stick shaped one-dimensional gold nano-particle preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A preparation method of sugar-coated one-dimensional gold nanoparticles, the steps are as follows:

[0037] (1) Prepare sodium dodecyl sulfate (SDS, 45 wt%)-aminobutyric acid (0.5 wt%)-chloroauric acid (HAuCl 4 , 0.03M aqueous solution) liquid crystal system, put it into a 25°C incubator after mixing, and react for 72 h;

[0038] (2) Dilute the reaction system with water, centrifuge, remove the supernatant, collect the precipitate and obtain the product, and observe the obtained product through a transmission electron microscope to present a variety of shapes, including two-dimensional gold nanodisks, one-dimensional sugar-coated haws and spherical particles, wherein One-dimensional candied haws-shaped gold nanoparticles have a diameter of about 50 nm and a length of 100-200 nm, which account for a small proportion of all products.

Embodiment 2

[0040] A preparation method of sugar-coated one-dimensional gold nanoparticles, the steps are as follows:

[0041] (1) Prepare sodium dodecyl sulfate (SDS, 45 wt%)-aminobutyric acid (1.5 wt%)-chloroauric acid (HAuCl 4 , 0.03M aqueous solution) liquid crystal system, put it into a 25°C incubator after mixing, and react for 72 h;

[0042] (2) Dilute the reaction system with water, centrifuge, remove the supernatant, collect the precipitate to obtain the product, and observe through a transmission electron microscope that the obtained product presents a one-dimensional candied haws-like structure with a diameter of 100-120 nm and a length of 500-900 nm.

Embodiment 3

[0044] A preparation method of sugar-coated one-dimensional gold nanoparticles, the steps are as follows:

[0045] (1) Prepare sodium dodecyl sulfate (SDS, 45 wt%)-aminobutyric acid (2.5 wt%)-chloroauric acid (HAuCl 4 , 0.03M aqueous solution) liquid crystal system, put it into a 25°C incubator after mixing, and react for 72 h;

[0046] (2) Dilute the reaction system with water, centrifuge, remove the supernatant, collect the precipitate and obtain the product, and observe the obtained product through a transmission electron microscope to present various shapes. mm, occasionally one-dimensional candied haws with few particles.

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Abstract

The invention discloses a sugarcoated-haws-on-stick shaped one-dimensional gold nano-particle preparation method. The preparation method comprises the steps of using an anionic surfactant-biomolecule A-HAuC14 mixed system as a reaction system, performing reaction at room temperature to produce one-dimensional sugarcoated-haws-on-stick shaped gold nano-particles. The sugarcoated-haws-on-stick shaped one-dimensional gold nano-particle preparation method has the advantages that the reaction system is simple and easy to operate and moderate in condition; a reducing agent is bio-molecules and has the environment-friendly characteristic; a product is controllable in shape and particle size, large in yield and clear in structure and the like.

Description

technical field [0001] The invention relates to a preparation method of one-dimensional gold nanoparticles, in particular to a preparation method of sugar-coated one-dimensional gold nanoparticles. Background technique [0002] Noble metal nanoparticles with anisotropic geometry, especially one-dimensional or two-dimensional gold nanoparticles, exhibit different optical absorption and emission spectral properties from spherical particles and bulk materials, such as metal-enhanced fluorescence, surface-enhanced Raman scattering, It has great application value in the fields of media sensing, cancer hyperthermia, drug release control, nano-optical imaging, and local electromagnetic field enhancement. One-dimensional gold nanomaterials, such as gold nanorods and gold nanowires, have more exotic optical and electrical properties than spherical particles, and the synthesis method is relatively simple. Gold nanorods can be self-assembled to obtain one-dimensional, two-dimensional ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/24B22F1/00B82Y40/00
Inventor 王庐岩王海路王力
Owner UNIV OF JINAN
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