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- Title
Synthesis, Properties, and Dispersion of Few-Layer Graphene Fluoride.
- Authors
Grayfer, Ekaterina D.; Makotchenko, Viktor G.; Kibis, Lidiya S.; Boronin, Andrei I.; Pazhetnov, Egor M.; Zaikovskii, Vladimir I.; Fedorov, Vladimir E.
- Abstract
We have fluorinated few-layer graphene (FLG) by using a low-temperature route with gaseous ClF3. The treatment process resulted in a new graphene derivative with a finite approximate composition of C2F. TEM studies showed that the product consisted of thin transparent sheets with no more than 10 fluorographene layers stacked together. Spectroscopic methods revealed a predominantly covalent nature of the CF bonds in the as-synthesized product and we found no evidence for the existence of so-called 'semi-ionic' CF bonds, as observed in bulk C xF. In contrast to the case of graphite and typical (thick) expanded graphites, of FLG did not lead to the intercalation of ClF3 molecules, owing to the lack of a 3D layered structure. The approximate 'critical' number of graphene layers that were necessary to form a phase of intercalated compound was estimated to be more than 12, thus providing a 'chemical proof' of the difference between the properties of few-layered graphenes and bulk graphites. Fluorographene C2F was successfully delaminated into thinner layers in organic solvents, which is an important property for its integration into electronic devices, nanohybrids, etc.
- Subjects
GRAPHENE; CARBON; FLUORIDES; FLUORINE compounds; FLUORINE
- Publication
Chemistry - An Asian Journal, 2013, Vol 8, Issue 9, p2015
- ISSN
1861-4728
- Publication type
Article
- DOI
10.1002/asia.201300401