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Gold nanoparticles and method of synthesizing the same

a technology of gold nanoparticles and synthesis methods, applied in the field of gold nanoparticles and a synthesis method thereof, can solve the problems of insufficient application of planar gold nanoparticles as two-dimensional nanoplates in the development of new materials, and achieve the effect of high yield and low cos

Inactive Publication Date: 2006-02-02
KOREA RES INST OF STANDARDS & SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

[0008] Accordingly, the present invention has been made to solve the above-mentioned problems occurring in the prior art, and an object of the present invention is to provide gold nanoparticles consisting of gold nanoplates, which can be produced at low cost with high yields in large amounts by a liquid-phase synthesis and whose size can be controlled, as well as a synthesis method thereof.

Problems solved by technology

However, attempts to produce planar gold nanoparticles as two-dimensional nanoplates and apply such nanoplates in the development of new materials are still insufficient in spite of their technological importance in the applications to optical devices, electronic devices, nanomechanical devices, etc.

Method used

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  • Gold nanoparticles and method of synthesizing the same
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Embodiment Construction

[0023] Hereinafter, a preferred embodiment of the present invention will be described with reference to the accompanying drawings.

[0024] In a preferred embodiment, the present invention provides gold nanoparticles consisting of gold nanoplates, which are highly crystalline and have the size controlled in the nanometer range. In another embodiment, the present invention provides gold nanoparticles consisting of gold nanoplates which can be produced at low cost with high yields in large amounts by a liquid phase synthesis method.

[0025]FIG. 1 is a flow chart for illustrating a method for synthesizing gold nanoparticles according to one embodiment of the present invention.

[0026] As shown in FIG. 1, the inventive method for synthesizing gold nanoparticles comprises the steps of: (S1) stirring and heating an aqueous solution of HAuCl4.3H2O; (S2) adding a dispersion stabilizer to the HAuCl4.3H2O solution; (S3) adding a reducing agent to the HAuCl4.3H2O solution to which the dispersion s...

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Abstract

The present invention relates to gold nanoparticles which can be produced at low costs with high yields in large amounts by a liquid phase synthesis method and have a controlled size, as well as a synthesis method thereof. The inventive gold nanoparticles consist of gold nanoplates having a polygonal or circular plate structure.

Description

[0001] This application claims priority of Korean Patent Application No. 2004-58414 filed Jul. 29, 2004. FIELD OF THE INVENTION [0002] The present invention relates to gold nanoparticles and a synthesis method thereof, and more particularly to gold nanoparticles which can be produced at low costs, high yields and large amounts by a liquid phase synthesis and has a planar shape with a controlled size, as well as a synthesis method thereof. DESCRIPTION OF THE PRIOR ART [0003] As generally known in the art, gold nanoparticles are widely used in various fields, such as catalysts, chemical sensors, biosensors, optoelectronic devices, optical devices, nano-devices, and surface enhanced Raman scattering (SERS). [0004] Such gold nanoparticles show various optical properties depending on their shape. For example, spherical gold nanoparticles have a strong absorbance peak at 500-600 nm, whereas nanorods and nanoboxes show absorbance peaks at 500-1,500 nm. Such optical properties are very impo...

Claims

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Application Information

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IPC IPC(8): C22C5/02B22F9/24B22F1/054B22F1/068
CPCB22F1/0018B22F1/0055B22F9/24B22F2001/0033B82Y30/00B22F2998/00B22F1/0551B22F1/068B22F1/054B22F1/056
Inventor AH, CHIL SEONGYUN, WAN SOOYUN, YONG JUHA, DONG HAN
Owner KOREA RES INST OF STANDARDS & SCI