Abstract
An anti-fouling ability of diamond-like carbon (DLC) electrodes to biological macromolecules has been investigated from a decrease in the electrochemical redox current of Fe(CN)(6)(4-/3-), used as a redox marker. A DLC electrode and a glassy carbon (GC) electrode were immersed in a solution containing bovine serum albumin (BSA) or DNA. The GCs treated with biological macromolecules gave rise to a significant decrease in the currents, while there was no signal decreases from the treated DLCs. The signals from the DLCs remain essentially unchanged for at least 24 h at a 10 mg/mL concentration level of BSA.
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