# US 10,865,277 B2 · Method for manufacturing a metal nanostructure having a chiral structure comprising regioselectivity adsorbing a peptide on the surface of a metal seed particle

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- Number: US 10,865,277 B2
- Document ID: US10865277B2
- Status: Granted
- Kind: B2
- Application number: 15/965,726
- Filed: 2018-04-27
- Published: 2018-11-01
- Granted: 2020-12-15
- Earliest claimed: 2017-04-28
- Assignees: LG Display Co., Ltd.; Snu R&Db Foundation
- Applicants: LG Display Co., Ltd.; SNU R&DB Foundation
- Inventors: KiSeok Chang; WookSung Kim; KiTae Nam; SungPil Ryu; HyeEun Lee; HyoYong Ahn
- Web page: https://patentgrep.com/patent/US10865277B2

## CPC

- C07K 5/0215: {containing natural amino acids, forming a peptide bond via their side chain functional group, e.g. epsilon-Lys, gamma-Glu}
- B22F 1/054: Nanosized particles
- B22F 1/0553: {Complex form nanoparticles, e.g. prism, pyramid, octahedron}
- B22F 1/056: {Submicron particles having a size above 100 nm up to 300 nm}
- B22F 9/24: starting from liquid metal compounds, e.g. solutions
- C07K 5/06026: {the side chain containing 0 or 1 carbon atom, i.e. Gly or Ala}
- C07K 5/06165: {and Pro-amino acid; Derivatives thereof}
- C08G 73/0206: {Polyalkylene(poly)amines}
- C30B 7/14: the crystallising materials being formed by chemical reactions in the solution
- B82Y 20/00: Nanooptics, e.g. quantum optics or photonic crystals
- B82Y 30/00: Nanotechnology for materials or surface science, e.g. nanocomposites
- B82Y 40/00: Manufacture or treatment of nanostructures
- Y10S 977/895: having step or means utilizing chemical property
- C07K: PEPTIDES (peptides in foodstuffs A23; obtaining protein compositions for foodstuffs, working-up proteins for foodstuffs A23J; preparations for medicinal purposes A61K; peptides containing beta-lactam rings C07D; cyclic dipeptides not having in their molecule any other peptide link than those which form their ring, e.g. piperazine-2,5-diones, C07D; ergot alkaloids of the cyclic peptide type C07D519/02; macromolecular compounds having statistically distributed amino acid units in their molecules, i.e. when the preparation does not provide for a specific; but for a random sequence of the amino acid units, homopolyamides and block copolyamides derived from amino acids C08G69/00; macromolecular products derived from proteins C08H1/00; preparation of glue or gelatine C09H; single cell proteins, enzymes C12N; genetic engineering processes for obtaining peptides C12N15/00; compositions for measuring or testing processes involving enzymes C12Q; investigation or analysis of biological material G01N33/00)
- B22F: WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER (making alloys by powder metallurgy C22C); APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C30B: SINGLE-CRYSTAL GROWTH (by using ultra-high pressure, e.g. for the formation of diamonds, B01J3/06); UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL (zone-refining of metals or alloys C22B); PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE (casting of metals, casting of other substances by the same processes or devices B22D; working of plastics B29; modifying the physical structure of metals or alloys C21D, C22F); SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE (for producing semiconductor devices or parts thereof H10); APPARATUS THEREFOR
- B82Y: SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

## 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.

## Claims

### Claim 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.

### Claim 2 (depends on 1)

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.

### Claim 3 (depends on 1)

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

### Claim 4 (depends on 1)

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

### Claim 5 (depends on 1)

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

### Claim 6 (depends on 1)

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

### Claim 7 (depends on 1)

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