Isoniazid‐sensing Behavior of a Hybrid Silsesquioxane and Cobalt Pentacyanonitrosylferrate‐based Nanocomposite

Abstract

A novel silsesquioxane and cobalt nitroprusside compound was prepared from octa(aminopropyl)silsesquioxane, resulting in a nanocomposite (ACCoN), which was then characterized by different spectroscopic techniques. The cyclic voltammograms of the ACCoN‐modified graphite paste electrode indicated a redox pair with a formal potential (Eθ′)=0.38 V, assigned to the Co(II)Fe(II)(CN)5NO/Co(II)Fe(III)(CN)5NO redox couple. The ACCoN‐modified graphite paste electrode was sensitive to isoniazid concentrations, presenting a linear response at a concentration range from 6.0×10−7 to 1.0×10−5 mol L−1, with limit of detection and amperometric sensitivity of 5.53×10−7 mol L−1 and 0.17 A/mol L−1, respectively.

β‐Cyclodextrin PAMAM Dendrimer Surface Doped with Silver and Hexacyanoferrate (III) and its Applications for Dopamine Detection in Synthetic Samples

“…For subsequent studies, KNO 3 was chosen as supporting electrolyte. Additionally, the I pa /I pc ratio and ΔEp varied from ∼0.87 to 1.0 V and from ∼0.11 to 0.13, respectively, characterizing the process as quasi ‐reversible [45]. This peak (at this potential) has a contribution of Ag redox process (Figure 5 (B)), but the bimetallic complex cannot be identified because in the complex, the silver hexacyanoferrate redox couple occur at a more positive potential (∼0.7–0.8 V).…”

“…process as quasi-reversible [45]. This peak (at this potential) has a contribution of Ag redox process (Figure 5 (B)), but the bimetallic complex cannot be identified because in the complex, the silver hexacyanoferrate redox couple occur at a more positive potential (~0.7-0.8 V).…”