Abstract: An optical fiber includes a graphene oxide and a reduced graphene oxide and a gas sensor includes the optical fiber. A method for manufacturing the optical fiber includes coating a graphene oxide layer and reducing a part of the graphene oxide layer, and a method for manufacturing the gas sensor includes coating a graphene oxide layer and reducing a part of the graphene oxide layer.

Abstract: The present invention relates to a flame retardant comprising graphene oxide wherein phosphorus is doped on the surface and a preparation method thereof, and more specifically relates to a technique relating to a flame retardant, which dopes phosphorus component having flame retardance in a very high rate through a simple method, based on the graphene oxide, a form wherein graphene which is difficult to be synthesized chemically is oxidized. When coating the flame retardant on a subject such as fabric, since it forms a layer preventing the transfer of heat in combustion, there are advantages that it can effectively prevent fire without a change of the surface, except for a little shrinkage, has the remarkable durability without forming any toxic material which can be harmful to a human and environment, and it can be mass-produced with low price, and it can be applied to the various industrial fields.

Abstract: A graphene derivative-based composition for drug delivery, a method of preparing the graphene derivative-based composition, and a method of drug delivery using a graphene derivative-based carrier are provided. The graphene derivative-based composition for drug delivery includes a nanocomposite including a drug loaded on a carrier.

Abstract: A catalyst for an organic reaction and a method of using a catalyst in an organic reaction are provided. The catalyst for an addition or condensation reaction includes a graphene oxide including an oxygen functional group, and the catalyst is configured to promote the addition or condensation reaction by bonding the oxygen functional group with an alkali metal ion or alkali earth metal ion during the addition or condensation reaction.

Abstract: A catalyst for an organic reaction and a method of using a catalyst in an organic reaction are provided. The catalyst for an addition or condensation reaction includes a graphene oxide including an oxygen functional group, and the catalyst is configured to promote the addition or condensation reaction by bonding the oxygen functional group with an alkali metal ion or alkali earth metal ion during the addition or condensation reaction.

Abstract: An optical fiber includes a graphene oxide and a reduced graphene oxide and a gas sensor includes the optical fiber. A method for manufacturing the optical fiber includes coating a graphene oxide layer and reducing a part of the graphene oxide layer, and a method for manufacturing the gas sensor includes coating a graphene oxide layer and reducing a part of the graphene oxide layer.