Thiofluorographene-hydrophilic graphene derivative with semiconducting and genosensing properties

Veronika Urbanová; Kateřina Holá; Athanasios B Bourlinos; Klára Čépe; Adriano Ambrosi; Adeline Huiling Loo; Martin Pumera; František Karlický; Michal Otyepka; Radek Zbořil

doi:10.1002/adma.201500094

Thiofluorographene-hydrophilic graphene derivative with semiconducting and genosensing properties

Adv Mater. 2015 Apr 8;27(14):2305-10. doi: 10.1002/adma.201500094. Epub 2015 Feb 18.

Authors

Veronika Urbanová¹, Kateřina Holá, Athanasios B Bourlinos, Klára Čépe, Adriano Ambrosi, Adeline Huiling Loo, Martin Pumera, František Karlický, Michal Otyepka, Radek Zbořil

Affiliation

¹ Regional Centre of Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacky University, Slechtitelu 11, 783 71, Olomouc, Czech Republic.

PMID: 25692678
DOI: 10.1002/adma.201500094

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.

Keywords: DNA; bandgap; graphene functionalization; impedance spectroscopy; semiconductor; sensing; sulfhydryl; sulfur.