Dubecký Matúš, Otyepková Eva, Lazar Petr, Karlický František, Petr Martin, Čépe Klára, Banáš Pavel, Zbořil Radek, Otyepka Michal
Regional Centre of Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacký University Olomouc, tř. 17. listopadu 12, 771 46 Olomouc, Czech Republic.
J Phys Chem Lett. 2015 Apr 16;6(8):1430-4. doi: 10.1021/acs.jpclett.5b00565. Epub 2015 Apr 2.
Fluorographene (FG) is a two-dimensional graphene derivative with promising application potential; however, its reactivity is not understood. We have systematically explored its reactivity in vacuum and polar environments. The C-F bond dissociation energies for homo- and heterolytic cleavage are above 100 kcal/mol, but the barrier of SN2 substitution is significantly lower. For example, the experimentally determined activation barrier of the FG reaction with NaOH in acetone equals 14 ± 5 kcal/mol. The considerable reactivity of FG indicates that it is a viable precursor for the synthesis of graphene derivatives and cannot be regarded as a chemical counterpart of Teflon.
氟石墨烯（FG）是一种具有广阔应用潜力的二维石墨烯衍生物；然而，其反应活性尚不明确。我们系统地研究了它在真空和极性环境中的反应活性。均裂和异裂的C-F键解离能均高于100千卡/摩尔，但SN2取代的势垒显著更低。例如，实验测定的FG在丙酮中与NaOH反应的活化势垒为14±5千卡/摩尔。FG的显著反应活性表明它是合成石墨烯衍生物的一种可行前驱体，不能被视为聚四氟乙烯的化学类似物。
