title: Fine tuning of graphene properties by modification with aryl halogens.
abstract: Graphene and its derivatives belong to one of the most intensively studied materials. The radical reaction using halogen derivatives of arene-diazonium salts can be used for effective control of graphene's electronic properties. In our work we investigated the influence of halogen atoms (fluorine, chlorine, bromine and iodine) as well as their position on the benzene ring towards the electronic and electrochemical properties of modified graphenes. The electronegativity as well as the position of the halogen atoms on the benzene ring has crucial influence on graphene's properties due to the inductive and mesomeric effects. The results of resistivity measurement are in good agreement with the theoretical calculations of electron density within chemically modified graphene sheets. Such simple chemical modifications of graphene can be used for controllable and scalable synthesis of graphene with tunable transport properties.
authors.affiliation: Department of Inorganic Chemistry, University of Chemistry and Technology Prague, 166 28 Prague 6, Czech Republic. zdenek.sofer@vscht.cz.
authors.forename: D
authors.initials: D
authors.lastname: Bouša
authors.affiliation: Division of Chemistry & Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore637371, Singapore. pumera@ntu.edu.sg.
authors.forename: M
authors.initials: M
authors.lastname: Pumera
authors.affiliation: Department of Inorganic Chemistry, University of Chemistry and Technology Prague, 166 28 Prague 6, Czech Republic. zdenek.sofer@vscht.cz.
authors.forename: D
authors.initials: D
authors.lastname: Sedmidubský
authors.affiliation: Department of Organic Chemistry, University of Chemistry and Technology Prague, 166 28 Prague 6, Czech Republic.
authors.forename: J
authors.initials: J
authors.lastname: Šturala
authors.affiliation: Department of Inorganic Chemistry, University of Chemistry and Technology Prague, 166 28 Prague 6, Czech Republic. zdenek.sofer@vscht.cz.
authors.forename: J
authors.initials: J
authors.lastname: Luxa
authors.affiliation: Department of Inorganic Chemistry, University of Chemistry and Technology Prague, 166 28 Prague 6, Czech Republic. zdenek.sofer@vscht.cz.
authors.forename: V
authors.initials: V
authors.lastname: Mazánek
authors.affiliation: Department of Inorganic Chemistry, University of Chemistry and Technology Prague, 166 28 Prague 6, Czech Republic. zdenek.sofer@vscht.cz.
authors.forename: Z
authors.initials: Z
authors.lastname: Sofer