Communication—Conductive Paintable 2D Layered MoS2 Inks

Abstract

Conductive and paintable inks of 2D layered MoS2 with aspect ratio-dependent conductivity are demonstrated. Using ultrasonically assisted solvent-exfoliation of MoS2, 2D and few-layer suspensions become inks that provide smooth films when painted. Conductivity of painted 2D MoS2 inks can be modulated by length and width, where the aspect ratio dependence of conductivity is linked to the painting direction. Inks of solvent-exfoliated MoS2 can be painted as conductive films without polymeric additives.