title: Covalent modification and exfoliation of graphene oxide using ferrocene.
abstract: Large scale preparation of single-layer graphene and graphene oxide is of great importance due to their potential applications. We report a simple room temperature method for the exfoliation of graphene oxide using covalent modification of graphene oxide with ferrocene to obtain single-layer graphene oxide sheets. The samples were characterized by FESEM, HRTEM, AFM, EDAX, FT-IR, Raman and Mössbauer spectroscopic studies. HRTEM micrograph of the covalently modified graphene oxide showed increased interlayer spacing of approximately 2.4 nm due to ferrocene intercalation. The presence of single-layer graphene oxide sheets were confirmed by AFM studies. The covalently modified ferrocene-graphene oxide composite showed interesting magnetic behavior.
authors.affiliation: New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore,India.
authors.forename: M B
authors.initials: MB
authors.lastname: Avinash
authors.forename: K S
authors.initials: KS
authors.lastname: Subrahmanyam
authors.forename: Y
authors.initials: Y
authors.lastname: Sundarayya
authors.forename: T
authors.initials: T
authors.lastname: Govindaraju
mesh_terms: D000537:Aluminum Oxide / Q000737:chemistry; D002244:Carbon / Q000737:chemistry*; D005296:Ferrous Compounds / Q000737:chemistry*; D008280:Magnetics; D000075163:Metallocenes; D018625:Microscopy, Atomic Force; D049329:Nanostructures / Q000737:chemistry / Q000648:ultrastructure; D010087:Oxides / Q000737:chemistry*; D013059:Spectrum Analysis, Raman
chemical_list: D005296:Ferrous Compounds; D000075163:Metallocenes; D010087:Oxides; D002244:Carbon; D000537:Aluminum Oxide; C004998:ferrocene