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This paper describes the interaction of a octa (3-chloropropyl)octasilsesquioxane (SS) functionalized with imidazole (SSI) groups, and its subsequent reaction with silver (AgSSI) and hexacyanoferrate (III) (AgHSSI). The materials SS, SSI were characterized by infrared (FTIR); solid state 13C and 29Si nuclear magnetic resonance (NMR). The AgSSI and AgHSSI were characterized by electronic (Uv-Vis) and infrared spectroscopy (FTIR).  The AgHSSI was incorporated into a graphite paste electrode and the electrochemical studies were conducted with cyclic voltammetry. The AgSSI system was studied first, followed by the AgHSSI. The spectroscopic studies reveals that preparation was conducted with success. The cyclic voltammogram of AgSSI obtained from a graphite paste electrode modified (50% m/m) exhibited a redox couple with average potential (E?’) of 0.01 V (vs Ag/AgCl(s), KNO3, 1.0 mol L-1; v = 20 mV s-1), attributed to the Ag0/Ag+ redox process. The cyclic voltammogram of AgHSSI with AgHSSI (50% m/m) exhibited a single redox couple, much wider with E?’= 0.14 V, (vs Ag/AgCl(s), KNO3, 1.0 mol L-1, v = 20 mV s-1) attributed to the Fe2+(CN)6/ Fe3+(CN)6 process.

international journal of chemistry

Preparation, Characterization and Voltammetric Aspects of a Silsesquioxane Organofunctionalized With Imidazole Groups and Subsequent Reaction With Silver and Potassium Hexacyanoferrate (III)