Covalent cross-linking of 2H-MoS2 nanosheets.

The combination of 2D materials opens a wide range of possibilities to create new generation structures with multiple applications. Covalently cross-linked approaches are a ground-breaking strategy for the formation of homo or heterostructures made by design. However, the covalent assembly of transition metal dichalcogenides flakes is relatively underexplored. Here, a simple covalent cross-linking method to build 2H-MoS 2 -MoS 2 homostructures is described, using commercially available bismaleimides. Theses assemblies are majoritarily connected vertically, basal plane to basal plane, creating specific molecular sized spaces between MoS 2 sheets. This straightforward approach, therefore, gives access to the controlled connection of sulfide-based 2D materials.