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‐MoS2–MoS2 homostructures is described, using commercially available bismaleimides. These assemblies are mainly connected vertically, basal plane to basal plane, creating specific molecular sized spaces between MoS2 sheets. Therefore, this straightforward approach gives access to the controlled connection of sulfide‐based 2D materials. Cross‐linked nanosheets: The covalent combination of different flakes of 2D materials is relatively underexplored, in particular, in the case of transition metal dichalcogenides. This work reports a simple methodology of covalent cross‐linking of MoS2 through bismaleimide reagent. The MoS2–MoS2 homostructures show preferably a vertical connection, basal plane to basal plane of different flakes.