Selenium covalently modified graphene: towards gas sensing

0507014 - ÚOCHB 2020 RIV GB eng J - Journal Article
Šturala, J. - Luxa, J. - Plutnar, Jan - Janoušek, Zbyněk - Sofer, Z. - Pumera, M.
Selenium covalently modified graphene: towards gas sensing.
2D Materials. Roč. 6, č. 3 (2019), č. článku 034006. ISSN 2053-1583. E-ISSN 2053-1583
Institutional support: RVO:61388963
Keywords : graphene * doping * sensing
OECD category: Organic chemistry
Impact factor: 7.140, year: 2019
Method of publishing: Limited access
https://iopscience.iop.org/article/10.1088/2053-1583/ab20f2

The research in the area of graphene derivatives containing chalcogen elements is currently an exclusive domain of oxygen- and sulfur-containing functional groups. Here we report an effective introduction of selenium-based organic functional groups and propose a mechanism of their attachment to graphene and graphene-related materials. Fluorographene can be effectively functionalized by selenium-containing group, forming C-Se bonds without undesired formation of elemental selenium, using selenourea. A similar reaction on graphene oxide is accompanied by the formation of elemental selenium due to oxidation of selenourea by oxygen-containing functional groups of graphene oxide. The formation of C-Se bonds was confirmed by several spectroscopic methods. The selenium covalently-modified graphene represents the first example of graphene-selenium compound with potential application in gas sensing.
Permanent Link: http://hdl.handle.net/11104/0298115