Surface modification of glassy carbon by riboflavin

摘要: Flavin derivatives catalyze the oxidation-reduction reactions in biological systems. All known flavins form thermodynamically reversible Hence are good candidates for electron transfer mediators. In present investigation riboflavin (vitamin B 2 ) is attached to surface of glassy carbon by covalent linkage. The electrode thus modified characterized cyclic voltammetry and impedance measurements. From voltammetric data coverage calculated be 7.7×10 -9 mol/cm . measurements, k o across 2.5 s -1 value comparable that obtained from data. tested its catalytic properties investigating reduction oxygen oxidation ascorbic acid