NANOSYSTEMS: PHYSICS, CHEMISTRY, MATHEMATICS, 2014, 5 (4), P. 477-485
CHLORGRAPHYNES: FORMATION PATH, STRUCTURE AND ELECTRONIC PROPERTIES
A. L. Ivanovskii – Institute of Solid State Chemistry UB RAS, Ekaterinburg, Russia
A. N. Enyashin – Institute of Solid State Chemistry UB RAS, Ekaterinburg, Russia; email@example.com
The presence in graphyne sheets of a variable amount of sp2 and sp1 carbon atoms suggests a high ability of these nanostructures for saturation. E.g., covalent binding of chlorine atoms would lead to sp3- and new sp2 hybridized carbon atoms, and the emergence of chlorgraphynes (chlorinated graphynes) with variable Cl/C stoichiometry may be expected. Here, employing DFT band structure calculations, a series of new graphyne derivatives – layered chlorgraphynes – is examined on example of α-graphyne. The possible formation path of chlorgraphynes as a set of consecutive free-radical additions of Cl atoms is established. From examples of a few representative compounds, the trends in the structural and electronic properties are discussed, depending on their stoichiometry.
Keywords: Graphynes, carbon allotropes, graphene derivatives, DFT calculations.
PACS 61.48.Gh, 68.43.-h, 73.22.Pr, 81.05.ue