Nanosystems using platinum (Pt) nanodots assembly (multi-Pt nanoparticles, m-Pt) as the core and silica (SiO2) shells were successfully synthesized as m-Pt@SiO2 spherical nanoparticles (NPs) and m-Pt@SiO2 nanochains (NChs) by a reverse microemulsion (water-in-oil) based method. The kinetically controlled reduction of K2PtCl4 by the Brij35 surfactant within reverse micelles, followed by condensation of tetraethyl orthosilicate (TEOS), led to the formation of multi-Pt nanodot core-slica shell systems. The reduction kinetics for the growth of coreshell systems were compared in both the presence of reducing agents and in the absence of supplementary agents, as well as the variation of water-to-surfactant ratio. To assemble Pt nanoparticles within in onedimensional silica matrix for m-Pt@SiO2 NChs, the pH of the reaction media was systematically changed.