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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 52: Focus: Two Dimensional Functional Materials I

CPP 52.6: Vortrag

Donnerstag, 10. März 2016, 11:30–11:45, H51

Transfer of covalently modified large area graphene — •Felix Rösicke^1,2, Marc A. Gluba¹, Guoguang Sun³, Karsten Hinrichs³, Jörg Rappich¹, and Norbert Nickel¹ — ¹Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Berlin, Germany — ²SALSA - School of Analytical Sciences Adlershof, Berlin, Germany — ³Leibniz - Institut für Analytische Wissenschaften - ISAS - e.V., Department Berlin, Berlin, Germany

We have investigated the electrochemical grafting of CVD grown large area graphene by p-aminophenyl residues from the respective diazonium salt (p-aminobenzenediazonium tetrafluoroborate). Subsequently, these amino functional groups were modified by activated p-nitrobenzoic acid via an amidation reaction. All processes were performed before and after the transfer of graphene onto SiO2 coated silicon wafers. After the electrochemical grafting the samples were characterized using Raman backscattering and infrared spectroscopic ellipsometry measurements. The data show that similar results were obtained for grafting of graphene on Cu foil and SiO2 coated silicon. Moreover, electrochemically functionalized graphene on Cu was successfully transferred to other substrates without damaging the functional groups. Considering the variety of possible diazonium cations, this opens the possibility to the use of modified graphene as tailored modular building block for specific surface functionalization.