Lateral Interfaces between Monolayer MoS₂ Edges and Armchair Graphene Nanoribbons on Au(111)

The realization of electronic devices based on heterostructures metallic, semiconducting, or insulating two-dimensional materials relies the ability to form structurally coherent and clean interfaces between them, vertically laterally. Lateral that fuse together two different in a well-controlled manner have attracted recent attention, but methods seamless dissimilar materials, such as graphene transition-metal dichalcogenides (TMDCs), are still limited. Here, we investigate structure lateral arise monolayer MoS2 flakes Au(111) families armchair nanoribbons (GNRs) created through on-surface assisted Ullmann coupling using regular organobromine precursors for GNR synthesis. We find parallel alignment edge leads van der Waals bonded nanoribbons, whereas perpendicular orientation is characterized by single phenyl-group covalently S edge. edge-on bonding facilitated hydrogen treatment MoS2, temperature control during growth shown influence nanoribbon width yield attached nanoribbons. Interestingly, temperatures needed drive intramolecular dehydrogenation formation lowered significantly presence which attribute enhanced recombination at edges. These results demonstration viable method make laterally nanostructures TMDCs be used further investigations heterostructure junctions.