Covalent Modification of Nanoparticle‐Imprinted Matrices for Selective Nanoparticle Recognition

Nanoparticle-imprinted matrices (NAIMs) were prepared using ammonium-terminated SiO2 nanoparticles (NPs) as templates initially attached to activated glassy carbon. After electrodeposition of a matrix polyplumbagin and polyphenol, the selectivity polymer was tuned towards ligand shell Au analyte NPs by conjugate addition substituted thiols plumbagin moiety within matrix. The reactions followed cyclic voltammetry (CV) presence amino groups in film verified X-ray photoelectron spectroscopy (XPS). dissolution template NPs, had complementary cavities for uptake NPs. amount NP inside quantified charge transferred during electrodissolution 3 M KCl linear sweep voltammetry, which depended on covalent modification matrix, pH size NAIM system modified with 1,2-ethanedithiol showed best 9.6×107 cm−2 at 10, is five times higher than same 5. In contrast, cysteamine-modified exhibited highest