Fluorographene: A Two-Dimensional Counterpart of Teflon

• Published in: Small (Weinheim an der Bergstrasse, Germany) Germany), 2010-12, Vol.6 (24), p.2877-2884
• Main Authors: Nair, Rahul R., Ren, Wencai, Jalil, Rashid, Riaz, Ibtsam, Kravets, Vasyl G., Britnell, Liam, Blake, Peter, Schedin, Fredrik, Mayorov, Alexander S., Yuan, Shengjun, Katsnelson, Mikhail I., Cheng, Hui-Ming, Strupinski, Wlodek, Bulusheva, Lyubov G., Okotrub, Alexander V., Grigorieva, Irina V., Grigorenko, Alexander N., Novoselov, Kostya S., Geim, Andre K.
• Format: Article
• Language: English
• Subjects: Carbon; Derivatives; Electrical resistivity; fluorination; fluorographene; Graphene; Graphite - chemistry; Halogenation; Inert; Insulators; Microscopy, Electron, Transmission; Modulus of elasticity; Polytetrafluoroethylene - chemistry; Polytetrafluoroethylenes; Spectrum Analysis, Raman; Teflon
• ISSN: 1613-6810; 1613-6829; 1613-6829
• DOI: 10.1002/smll.201001555

A stoichiometric derivative of graphene with a fluorine atom attached to each carbon is reported. Raman, optical, structural, micromechanical, and transport studies show that the material is qualitatively different from the known graphene‐based nonstoichiometric derivatives. Fluorographene is a high‐quality insulator (resistivity >1012 Ω) with an optical gap of 3 eV. It inherits the mechanical strength of graphene, exhibiting a Young’s modulus of 100 N m−1 and sustaining strains of 15%. Fluorographene is inert and stable up to 400 °C even in air, similar to Teflon. Fluorination of graphene yields a stoichiometric derivative of graphene with a fluorine atom attached to each carbon. Fluorographene is an optically transparent, high‐quality insulator with a mechanical strength and elasticity, matching those of graphene. It is inert and thermally stable, similar to Teflon.