Evaporation-induced flattening and self-assembly of chemically converted graphene on a solid surface

Solvent evaporation is found to significantly affect the morphology and assembly of chemically converted graphene drop cast on certain solid substrates. On negatively charged substrates, drying could induce the flattening and self-assembly of a single layer of CCG in an edge-to-edge manner. A mechanism is proposed to explain these phenomena.