title: Towards the Synthesis of Graphene Azide from Graphene Oxide.
abstract: In the last decades, organic azides haven proven to be very useful precursors in organic chemistry, for example in 1,3-dipolar cycloaddition reactions (click-chemistry). Likewise, azides can be introduced into graphene oxide with an almost intact carbon framework, namely oxo-functionalized graphene (oxo-G₁), which is a highly oxidized graphene derivative and a powerful precursor for graphene that is suitable for electronic devices. The synthesis of a graphene derivative with exclusively azide groups (graphene azide) is however still a challenge. In comparison also hydrogenated graphene, called graphene or halogenated graphene remain challenging to synthesize. A route to graphene azide would be the desoxygenation of azide functionalized oxo-G₁. Here we show how treatment of azide functionalized oxo-G₁ with HCl enlarges the π-system and removes strongly adsorbed water and some oxo-functional groups. This development reflects one step towards graphene azide.
authors.affiliation: Department of Chemistry and Pharmacy, Friedrich-Alexander Universität Erlangen-Nürnberg (FAU), Henkestraße 42, 91054 Erlangen, Germany. christian.e.halbig@fau.de.|Institute of Advanced Materials and Processes (ZMP), Friedrich-Alexander Universität Erlangen-Nürnberg (FAU), Dr.-Mack-Straße 81, 90762 Fürth, Germany. christian.e.halbig@fau.de.
authors.forename: Christian E
authors.initials: CE
authors.lastname: Halbig
authors.affiliation: Department of Chemistry and Pharmacy, Friedrich-Alexander Universität Erlangen-Nürnberg (FAU), Henkestraße 42, 91054 Erlangen, Germany. philipp.rietsch@gmx.net.|Institute of Advanced Materials and Processes (ZMP), Friedrich-Alexander Universität Erlangen-Nürnberg (FAU), Dr.-Mack-Straße 81, 90762 Fürth, Germany. philipp.rietsch@gmx.net.
authors.forename: Philipp
authors.initials: P
authors.lastname: Rietsch
authors.affiliation: Department of Chemistry and Pharmacy, Friedrich-Alexander Universität Erlangen-Nürnberg (FAU), Henkestraße 42, 91054 Erlangen, Germany. Siegfried.Eigler@fau.de.|Institute of Advanced Materials and Processes (ZMP), Friedrich-Alexander Universität Erlangen-Nürnberg (FAU), Dr.-Mack-Straße 81, 90762 Fürth, Germany. Siegfried.Eigler@fau.de.
authors.forename: Siegfried
authors.initials: S
authors.lastname: Eigler
mesh_terms: D000327:Adsorption; D001386:Azides / Q000138:chemical synthesis* / Q000737:chemistry*; D057930:Click Chemistry / Q000379:methods; D061565:Cycloaddition Reaction / Q000379:methods; D006108:Graphite / Q000138:chemical synthesis* / Q000737:chemistry*; D006851:Hydrochloric Acid / Q000737:chemistry; D010087:Oxides / Q000737:chemistry; D014867:Water / Q000737:chemistry
chemical_list: D001386:Azides; D010087:Oxides; D014867:Water; D006108:Graphite; D006851:Hydrochloric Acid
keywords: Raman; TGA-MS; graphene azide; graphene oxide