Fig. 1: General concept of light-driven C–H activation in long-chain molecules mediated by 2D materials.
From: Light-driven C–H activation mediated by 2D transition metal dichalcogenides

a Schematic showing the light-driven transformation of CTAC on an atomic layer of WSe2 into luminescent CDs. b Schematic showing the photochemical reaction process involving the activation of C–H bonds and the formation of C=C bonds.