Glassy Carbon Electrode Modified with 4,4''-Oxydiphenylene Bisdiazonium Tetrafluoroborate as a Sensitive Voltammetric Sensor for Flavonoids

In the current study, the electrochemical behaviors of 4,4'-oxydianiline and 4,4'-oxydiphenylene bisdiazonium tetrafluoroborate salt on the surface of glassy carbon electrodeusing voltammetry technique. 1 mm 4,4'-oxydianiline in 100 mm tetrabutylammoniumtetrafloroborate (in acetonitrile) has been modified to the electrode surface in 0.0 mv and+1800 mv potential range at 100 mv s-1 scanning rate with 50 cycles. the same solvent hasbeen used for 4,4'-oxydiphenylene bisdiazonium tetrafluoroborate salt. 1 mm prepared 4,4'-oxydiphenylene bisdiazonium tetrafluoroborate salt has been modified to the electrodesurface in +100 mv and -1200 mv potential range using 100 mv s-1 scanning rate with 10cycles. following the modification and characterization process, the sensitivity of4,4'-oxydiphenylene bisdiazonium tetrafluoroborate salt modified glassy carbon electrode hasbeen tested against flavones, 3-hydroxyflavone, quercetin, rutin and naringenin. based on thesensitivity tests, 4,4'-oxydiphenylene bisdiazonium tetrafluoroborate salt modified glassycarbon electrode can be used in the determination of total antioxidant capacity. the furtherstudies will progress through this way. cyclic voltammetry technique has been utilized forthe modification process. electrochemical impedance spectroscopy and scanning electronmicroscopy have been used for the characterization process.