Synthesis and Characterization of Citrate-Capped Gold Nanoparticles on Covalently Modified Silicon Surfaces by Benzylamine Thin Films

In this study, we aimed to assembly of citrate-capped gold nanoparticles on benzylamine thin films that covalently modified surfaces. For this purpose, firstly, p-type Si (100) electrodes were modified with benzylamine layers by electrochemical reduction of aryl diazonium salts (+N2-benzylamine). Then, the modified electrodes were submerged in a solution containing Au nanoparticles. Finally, Au nanoparticles were electrostatically assembled on positively charged benzylamine layers. The properties of the benzylamine films were investigated using voltammetric methods. The barrier properties of modified p-type Si (100) surfaces were studied by cyclic voltammetry in the presence of redox probes (Fe(CN)63- and Ru(NH3)63+). Also the final films generated for characterization and morphological analysis were examined by scanning electron microscopy (SEM)