Selective Bromination of Graphene Oxide by the Hunsdiecker Reaction

Autor:	Zdeněk Sofer, Martin Pumera, Radek Zbořil, Michal Lojka, David Sedmidubský, Jan Luxa, Ondřej Tomanec, Ondřej Jankovský
Rok vydání:	2017
Předmět:	Hunsdiecker reaction Chemistry Graphene Organic Chemistry Inorganic chemistry Oxide Chemical modification Halogenation 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Photochemistry 01 natural sciences Catalysis 0104 chemical sciences law.invention chemistry.chemical_compound law Halogen Surface modification 0210 nano-technology Graphene oxide paper
Zdroj:	Chemistry – A European Journal. 23:10473-10479
ISSN:	1521-3765 0947-6539
DOI:	10.1002/chem.201702031
Popis:	Halogenated graphenes have been attracting great attention in the recent years. The currently used methods are usually non-specific, and halogen groups are randomly distributed over the graphene. Here we demonstrate a selective graphene functionalization based on a well known reaction mechanism-Hunsdiecker reaction-applied on selective bromination of graphene oxide. The chemical analysis using various spectroscopic methods proved a high efficiency of this functionalization method. Bromination can be carried out under mild conditions without any high temperature or high pressure treatment. The chemical modification led to introduction of up to 20 wt.% of bromine covalently bonded to the graphene skeleton. The modified graphene was characterized in detail using a broad range of microscopic and spectroscopic methods and no significant contamination by reaction by-products was detected.
Databáze:	OpenAIRE
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