Three-color plasmon-mediated reduction of diazonium salts over metasurfaces

Abstract

Surface plasmon-mediated chemical reactions are of great interest for a variety of applications ranging from micro- and nanoscale device fabrication to chemical reactions of societal interest for hydrogen production or...

When ionic liquids meet diazonium salts to generate thin layers of modified surfaces

“…[14,15] More recently, the plasmon-assisted grafting of diazonium allowed to obtain multifunctional anisotropic objects, such as nanorods or nanocrosses by simply tuning the wavelength to the corresponding plasmon resonances. [16,17] Combining properly defined nanostructures and confinement effect even led to inhomogeneous growth of diazonium films on isotropic gold nanoparticles. [18] However, the most common reductive method remains the electrochemical assisted grafting.…”

SERS tags derived from silver nanoparticles and aryl diazonium salts for cell Raman imaging

“…However, it is noteworthy that diazonium salt chemistry was successfully applied in the literature to plasmonic NPs with various shapes including spheres, rods, 28 triangles, 37 stripes, 29 multibranched 34 and dendrimers. 38 Therefore, this study should be easily adaptable to a wide range of plasmonic NPs, including anisotropic Ag NPs. Three aryl diazonium salts with different para-substituents (-NO2, -C≡N, -C≡C-H) were selected due to their intense and characteristic SERS signals 39 making them ideal candidates to act as Raman reporters.…”