“…High electrochemical sensitivity of cobalt phthalocyanine modi®ed CCEs to hydrazine, Sol-Gel Derived Composite Ceramic Carbon Electrodes hydrogen peroxide, oxalic acid, cysteine and thiourea was demonstrated [30]. Quinones [23,45] and ferrocenyl containing groups [23,27,33,37,58], viologens [59,60] and tetrathiafulvalene [31] dopants were reported for catalysis and charge transfer mediation, particularly for biosensing applications. Wang's group and ours reported mediated electrochemical oxidation of NADH, a common dehydrogenase cofactor, by Meldola's blue doped CCEs [24,61].…”