Provided here are novel chalcogenopyrylium dyes and nanostructures comprised of chalcogenopyrylium dyes. Such nanostructures are useful for surface-enhanced Raman spectroscopic (SERS) and surface-enhanced resonance Raman scattering (SERRS).
Related publications: Chem. Sci., 2015, Advance Article http://pubs.rsc.org/en/content/articlehtml/2015/sc/c4sc03917c?page=search