Chemistry of Graphene and its Inorganic analogues

15Mar2018 15:00

Lecture

Speaker: Dr. Zdeněk Sofer (University of Chemistry and Technology Prague, Czech Republic)

Venue: Science Park 904,  room D1.112

 

About the speaker

Dr. Zdenek Sofer is an Associate Professor at the University of Chemistry and Technology Prague since 2013. He received his PhD also at the same University in 2008. He also spent one year in Forschungszentrum Julich (Peter Grünberg Institute, Germany) during his PhD and later stayed at the University Duisburg-Essen, Germany as a post-doc. His research interests are graphene-based and other 2D materials and their chemical modifications. He has published over 270 articles, which received over 5000 citations (h-index of 35).

Abstract

The chemistry of graphene is growing rapidly in last decade and broad range of graphene derivatives was prepared. Nevertheless, only two stoichiometric derivatives are currently known – hydrogenated and fluorinated graphene (graphane and fluorographene). Compared to graphene, these materials exhibit significantly different properties, e.g. higher reactivity as well as large differences in physical properties. Especially fluorographene can be applied as a substrate for nucleophilic substitution reactions, which significantly extend the possible chemical modifications of graphene. Currently, the chemistry of the other 2D materials starts to be explored. However, the chemistry of inorganic 2D materials of pnictogens and transition metal dichalcogenides is not well known. In comparison with graphene, new synthetic protocols have to be applied because the chemistry of these materials is extremely variable. In the case of transition metal dichalcogenides, the formation of the M-X-C bond (M is a metal, X is any chalcogenide) can be used as a starting point for exploring their chemistry and for further derivatisation. The chemistry of layered pnictogens is significantly different. In this case, various reactions including nucleophilic substitution can be applied, however, the bonding through the oxygen functionalities on pnictogen surface is observed in many cases.

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