Thiofluorographene-hydrophilic graphene derivative with semiconducting and genosensing properties.

Urbanová, Veronika; Holá, Kateřina; Bourlinos, Athanasios B; Čépe, Klára; Ambrosi, Adriano; Loo, Adeline Huiling; Pumera, Martin; Karlický, František et al. · Adv Mater · 2015

basic_science · Level V

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Abstract

We present the first example of covalent chemistry on fluorographene, enabling the attachment of -SH groups through nucleophilic substitution of fluorine in a polar solvent. The resulting thiographene-like, 2D derivative is hydrophilic with semiconducting properties and bandgap between 1 and 2 eV depending on F/SH ratio. Thiofluorographene is applied in DNA biosensing by electrochemical impedance spectroscopy.