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  • Title: Covalent modification and exfoliation of graphene oxide using ferrocene.
    Author: Avinash MB, Subrahmanyam KS, Sundarayya Y, Govindaraju T.
    Journal: Nanoscale; 2010 Sep; 2(9):1762-6. PubMed ID: 20820707.
    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.
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