Atomic-level molybdenum oxide nanorings with full-spectrum absorption and photoresponsive properties

Superthin nanostructures, particularly with atomic-level thicknesses, typically display unique optical properties because of their exceptional light–matter interactions. Here, we report a facile strategy for the synthesis of sulfur-doped molybdenum oxide nanorings with an atomic-level size (thickness of 0.5 nm) and a tunable ring-in-ring architecture. These atomic-level nanorings displayed strong photo-absorption in both the visible and...