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Schematic illustration of the poly-5,2′:5′,2″-terthiophene-3′-carboxylic acid (pTTCA)/ dendrimer (DEN)/ Au nanoparticles (AuNP)/biomolecule-linked avidin-hydrazine assembly developed for (A) DNA and (B) protein sensors, based on the electrocatalytic activity of hydrazine. (Reproduced with permission from [154]. Copyright 2014, American Chemical Society.)
