Ordering silver nanowires for chiroptical activity

With the development of chiral materials, remarkable progress has been made in application fields biology, chemistry, and physics past decades. Here we develop a solo-Ag-nanowire (NW)-based, bottom-up construction strategy to fabricate plasmonic film with strong chiroptical activity purple-blue band. Finite-difference time-domain simulations predict that helical structures by Ag NWs certain interlayer angles possess intensity. We then apply Langmuir-Blodgett technique construct layered NW assemblies both handedness via regulating angle direction. The show interlayer-angle-and film-thickness-dependent circular dichroism, reaching highest anisotropic factor 0.03. These new will serve as ideal candidates for sensors thanks their specific properties.