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A label-free and amplified electrochemical impedimetric aptasensor based on functionalized graphene nanocomposites (rGO–AuNPs) was developed for the detection of thrombin, which played a vital role in thrombosis and hemostasis. The thiolated aptamer and dithiothreitol (TBA15–DTT) were firstly immobilized on the gold electrode to capture the thrombin molecules, and then aptamer functionalized graphene...
In this paper, conducting polymer film modified electrodes were applied to fabricate paper-based chips (PCs), and different concentrations of chloride ions (Cl−) in water can be selectively detected based on the potential response towards Cl−. The three-electrode system was screen-printed on paper and the polypyrrole (PPy) film doped with Cl− was electrochemically polymerized on working electrodes...
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