Site‐Selective Immobilization of Ligands with Control of Density on Electroactive Microelectrode Arrays

Surface-bound redox-active quinone groups control the density of immobilized ligands on microelectrode arrays coated with self-assembled monolayers (see picture). The resulting conjugates are characterized by cyclic voltammetry and fluorescence microscopy to determine the density of immobilized ligands on each element of the microelectrode.