Structure–Reactivity Relationships Applied to Diazonium-Based Surface Functionalization: Toward Tunable Redox Bicomponent Monolayers

spacers. Electrochemical characterization reveals that the presence of extended linkers suppresses overgrowth and enables predictable tuning of redox unit surface density through adjustment of the functionalization solution composition while influencing the interfacial arrangement of the grafted species. These results establish clear design principles for the controlled assembly of multifunctional organic interfaces and provide new insight into structure-reactivity relationships in diazonium-based surface modification.