title: High-quality reduced graphene oxide by a dual-function chemical reduction and healing process.
abstract: A new chemical dual-functional reducing agent, thiophene, was used to produce high-quality reduced graphene oxide (rGO) as a result of a chemical reduction of graphene oxide (GO) and the healing of rGO. Thiophene reduced GO by donation of electrons with acceptance of oxygen while it was converted into an intermediate oxidised polymerised thiophene that was eventually transformed into polyhydrocarbon by loss of sulphur atoms. Surprisingly, the polyhydrocarbon template helped to produce good-quality rGOC (chemically reduced) and high-quality rGOCT after thermal treatment. The resulting rGOCT nanosheets did not contain any nitrogen or sulphur impurities, were highly deoxygenated and showed a healing effect. Thus the electrical properties of the as-prepared rGOCT were superior to those of conventional hydrazine-produced rGO that require harsh reaction conditions. Our novel dual reduction and healing method with thiophene could potentially save energy and facilitate the commercial mass production of high-quality graphene.
authors.affiliation: National Creative Research Initiative, Center for Smart Molecular Memory, Department of Chemistry, Sungkyunkwan University, 300 Cheoncheon-Dong, Jangan-Gu, Suwon, Gyeonggi-Do 440-746, Republic of Korea.
authors.forename: Surajit
authors.initials: S
authors.lastname: Some
authors.forename: Youngmin
authors.initials: Y
authors.lastname: Kim
authors.forename: Yeoheung
authors.initials: Y
authors.lastname: Yoon
authors.forename: HeeJoun
authors.initials: H
authors.lastname: Yoo
authors.forename: Saemi
authors.initials: S
authors.lastname: Lee
authors.forename: Younghun
authors.initials: Y
authors.lastname: Park
authors.forename: Hyoyoung
authors.initials: H
authors.lastname: Lee
mesh_terms: D006108:Graphite / Q000737:chemistry*; D018625:Microscopy, Atomic Force; D010084:Oxidation-Reduction; D010087:Oxides / Q000737:chemistry*; D013059:Spectrum Analysis, Raman; D013876:Thiophenes / Q000737:chemistry*; D014961:X-Ray Diffraction
chemical_list: D010087:Oxides; D013876:Thiophenes; C051763:thiophene A; D006108:Graphite