# US 2013/0157034 A1 · Method for chemical modification of a graphene edge, graphene with a chemically modified edge and devices including the graphene

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- Number: US 2013/0157034 A1
- Document ID: US20130157034A1
- Status: Published application
- Kind: A1
- Application number: 13/766,876
- Filed: 2013-02-14
- Published: 2013-06-20
- Earliest claimed: 2009-01-15
- Assignees: Samsung Electronics Co., Ltd.
- Inventors: Won Mook CHOI; Byung Hee HONG; Jaeyoung CHOI
- Web page: https://patentgrep.com/patent/US20130157034A1

## CPC

- C01B 32/194: After-treatment
- B82Y 30/00: Nanotechnology for materials or surface science, e.g. nanocomposites
- B82Y 40/00: Manufacture or treatment of nanostructures
- C01B 32/186: by chemical vapour deposition [CVD]
- C01B 32/23: Oxidation
- C07C 31/125: containing five to twenty-two carbon atoms
- C07C 31/20: Dihydroxylic alcohols
- C07C 47/02: Saturated compounds having —CHO groups bound to acyclic carbon atoms or to hydrogen
- C07C 49/12: Ketones containing more than one keto group
- C07C 53/128: the carboxylic group being bound to a carbon atom bound to at least two other carbon atoms, e.g. neo-acids
- C07C 69/22: having three or more carbon atoms in the acid moiety
- C01B 2204/04: Specific amount of layers or specific thickness
- C01B 2204/32: Size or surface area
- Y10T 428/24479: including variation in thickness
- Y10T 428/24802: Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
- Y10T 428/30: Self-sustaining carbon mass or layer with impregnant or other layer
- C01B: NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; {METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C}
- B82Y: SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- C07C: ACYCLIC OR CARBOCYCLIC COMPOUNDS
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A method for chemical modification of graphene includes dry etching graphene to provide an etched graphene; and introducing a functional group at an edge of the etched graphene. Also disclosed is graphene, including an etched edge portion, the etched portion including a functional group.

## Claims

### Claim 1

Graphene, comprising:
an etched edge portion, wherein the etched edge portion comprises a functional group.

### Claim 2 (depends on 1)

The graphene according to claim 1, wherein the functional group is introduced at the etched edge portion by contacting with hydroxide ions.

### Claim 3 (depends on 1)

The graphene according to claim 1, wherein the functional group is introduced by contacting with water, alcohol or a combination thereof.

### Claim 4 (depends on 3)

The graphene according to claim 3, wherein the functional group is introduced at the etched edge portion by contacting with steam.

### Claim 5 (depends on 1)

The graphene according to claim 1, wherein the graphene is a graphene sheet formed of polycyclic aromatic molecules with covalently bonded carbon atoms, and further wherein the graphene sheet comprises about 1 to about 300 layers of the graphene in a thickness direction, and having dimensions of greater than or equal to about 1 mm along each of a transverse direction and a longitudinal direction.

### Claim 6 (depends on 1)

The graphene according to claim 1, wherein the functional group is at least one selected from the group consisting of —C═O, —COOH, —C—OH, —CH═O, —COO−, —COOR wherein R represents C1-C6 alkyl and a combination thereof.

### Claim 7

A device comprising graphene, wherein the graphene comprises:
an etched edge portion, wherein the etched edge portion comprises a functional group.

### Claim 8

A graphene sheet, comprising:
a plurality of layers of graphene, wherein a layer of the graphene has an etched edge portion comprising a functional group.

### Claim 9 (depends on 8)

The graphene sheet according to claim 8, wherein the functional group is at least one selected from the group consisting of —C═O, —COOH, —C—OH, —CH═O, —COO−, —COOR wherein R represents C1-C6 alkyl and a combination thereof.

### Claim 10 (depends on 8)

The graphene sheet according to claim 8, having up to about 300 layers of the graphene in a thickness direction.

### Claim 11 (depends on 10)

The graphene sheet of claim 10, further comprising dimensions of greater than or equal to about 1 mm along each of a transverse direction and a longitudinal direction.