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An amperometric immunosensor for glycosylated hemoglobin (HbA1c) is reported. A glassy carbon electrode is modified with gold nanoparticles (AuNPs) bearing a ferrocene derivative and a glycosylated pentapeptide (GPP) as an epitope to which anti‐HbA1c IgG can selectively bind. The rest of the electrode is passivated with an oligo(ethylene oxide) species to give the electrode resistant to nonspecific...
A label‐free immunosensor for the detection of HbA1c was developed based on gold nanoparticle (AuNP)‐aryl diazonium salt modified glassy carbon (GC) electrode where transduction is achieved using electrochemical impedance spectroscopy (EIS). GC electrodes were first modified with 4‐aminophenyl (Ph‐NH2) layers to which AuNPs were attached. Thereafter an oligo(ethylene glycol) (OEG‐COOH) species were...
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