Method for chemical modification of a graphene edge, graphene with a chemically modified edge and devices including the graphene

Patent metadata

Field	Value
Publication number	US-9988274-B2
Application number	US-201313766876-A
Country	US
Kind code	B2
Filing date	Feb 14, 2013
Priority date	Jan 15, 2009
Publication date	Jun 5, 2018
Grant date	Jun 5, 2018

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.

First claim

What is claimed is:

1. Graphene, consisting of:
a single layer of graphene in a thickness direction; and
a functional group disposed on an edge of the graphene, wherein the functional group comprises
═O, and
—CH═O, —COOR wherein R in —COOR represents C 1 -C 6 alkyl, or a combination thereof,
wherein a content of the ═O group is greater than a content of each of the —CH═O group if present and the —COOR group if present.

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

3. The graphene according to claim 1 , wherein the functional group is a product of contacting with steam.

4. 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 dimensions of greater than or equal to about 1 mm along each of a transverse direction and a longitudinal direction.

5. The graphene according to claim 1 , wherein the functional group comprises —COOR, wherein R represents C 1 -C 6 alkyl.

6. A device comprising graphene, wherein the graphene consists of:
a single layer of the graphene in a thickness direction; and
a functional group disposed on an edge of the graphene, wherein the functional group comprises
═O, and
—CH═O, —COOR wherein R represents C 1 -C 6 alkyl, and a combination thereof,
wherein a content of the ═O group is greater than a content of each of the —CH═O group if present and the —COOR group if present.

7. The graphene according to claim 1 , wherein the functional group comprises —CH═O.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Choi Won Mook
• Hong Byung Hee
• Choi Jaeyoung

Classifications

• C07C49/12

  Ketones containing more than one keto group · CPC title

• C07C53/128

  the carboxylic group being bound to a carbon atom bound to at least two other carbon atoms, e.g. neo-acids · CPC title

• Y10T428/24802

  Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] · CPC title

• Y10T428/24479

  including variation in thickness · CPC title

• C07C47/02

  Saturated compounds having —CHO groups bound to acyclic carbon atoms or to hydrogen · CPC title