Method for manufacturing a metal nanostructure having a chiral structure comprising regioselectivity adsorbing a peptide on the surface of a metal seed particle

Patent metadata

Field	Value
Publication number	US-10865277-B2
Application number	US-201815965726-A
Country	US
Kind code	B2
Filing date	Apr 27, 2018
Priority date	Apr 28, 2017
Publication date	Dec 15, 2020
Grant date	Dec 15, 2020

Abstract

The present disclosure relates to a method for manufacturing a metal nanostructure having a chiral structure. The method for manufacturing a metal nanostructure comprises: preparing a first mixture solution by mixing a metal precursor, a surfactant, and a reducing agent; preparing a second mixture solution by adding a peptide to the first mixture solution; and preparing a metal nanostructure having a chiral structure by adding a metal seed particle to the second mixture solution.

First claim

What is claimed is:

1. A method for manufacturing a metal nanostructure, the method comprising:
preparing a first mixture solution by mixing a metal precursor, a surfactant, and a reducing agent;
preparing a second mixture solution by adding a peptide to the first mixture solution; and
preparing a metal nanostructure having a chiral structure by adding a metal seed particle to the second mixture solution to grow the metal nanostructure,
wherein when the metal seed particle is added to the second mixture solution in the preparing the metal nanostructure, the peptide is regioselectively adsorbed on the surface of the metal seed particle,
wherein the metal nanostructure is synthesized at a room temperature,
wherein the chiral structure means a structure in which the metal nanostructure does not overlap with its mirror image, and a shape which is twisted in one direction as asymmetric structure.

2. The method according to claim 1 , wherein the preparing of a first mixture solution includes:
preparing a solution containing the surfactant; and
mixing the metal precursor and the reducing agent in the solution.

3. The method according to claim 1 , wherein the metal precursor is a precursor including at least one of gold, silver, and copper.

4. The method according to claim 1 , wherein the peptide comprises a thiol-group.

5. The method according to claim 1 , wherein a size of the metal seed particle is 1 nm to 100 nm.

6. The method according to claim 1 , wherein a particle size of the metal nanostructure is 10 nm to 500 nm.

7. The method according to claim 1 , wherein the surfactant is cetyltrimethylammonium bromide and the reducing agent is ascorbic acid.

Assignees

• Lg Display Co Ltd
• Snu R&Db Foundation

Inventors

• Chang Kiseok
• Kim Wooksung
• Nam Kitae
• Ryu Sungpil
• Lee Hyeeun
• Ahn Hyoyong

Classifications

• B22F1/056

  Submicron particles having a size above 100 nm up to 300 nm · CPC title

• B22F1/054

  Nanosized particles · CPC title

• B22F1/0553

  Complex form nanoparticles, e.g. prism, pyramid, octahedron · CPC title

• B22F1/07

  Metallic powder characterised by particles having a nanoscale microstructure (nanosized particles B22F1/054) · CPC title

• C07K5/0215 Primary

  containing natural amino acids, forming a peptide bond via their side chain functional group, e.g. epsilon-Lys, gamma-Glu · CPC title