Two-dimensional nanoporous networks
The family of two-dimensional materials is a rapidly growing one. Tailoring the structure of these materials allows engineering their properties. Hollow versions of graphene offer new degrees of freedom for structure-engineering of the properties. Graphene antidot lattices have been much discussed in the literature in this respect, as they are predicted to yield spin qubits, to open sizable band-gaps in an otherwise gapless graphene, and to host dispersion-less electronic bands. Experimental realization of graphene antidot lattices has been mostly achieved with the help of top-down approaches relying on lithography performed on plain graphene sheets. An alternative approach consists of a controlled assembly of well-chosen molecular blocks. We explore two-dimensional polymerization reactions at metallic surfaces allowing to form two-dimensional nanoporous materials.
Top view of the structure of the periodic two-dimensional covalent nanoporous network, inferred from density functional theory, in the presence of a Au(111) substrate.