Antifouling Property of Hydrophilic UiO-66 Modified Electrodes
The antifouling property of hydrophilic UiO-66(UiO-66,UiO-66-NH2 and UiO-66-(OH)2)modified electrodes was investigated.The peak current obtained from UiO-66-NH2/GCE modified electrode retained up to 95%of the original value in FcMeOH solution.This phenomenon was attributed to the excellent hydrophilicity of UiO-66-NH2 that facilitated the formation of a hydration layer on the electrode surface,which created a physical and energetic barrier that prevented hydrophobic substances,such as proteins,from approaching the electrode surface.In addition,UiO-66-NH2/GCE modified electrode also exhibited long-term stability.Therefore,UiO-66 can be utilized as a new class of antifouling materials.This study also provided an effective strategy for the construction of electrochemical biosensors with good antifouling ability and stability.
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