期刊
2D MATERIALS
卷 6, 期 3, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/2053-1583/ab20f2
关键词
graphene; doping; sensing
资金
- project Advanced Functional Nanorobots (EFRR) [CZ.02.1.01/0.0/0.0/15_003/0000444]
- Czech Science Foundation (GACR) [16-05167S]
- MSMT [20-SVV/2018]
- Academy of Sciences of the Czech Republic [RVO:61388963]
- Neuron Foundation for science
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.
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