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An electrochemical DNA sensor was constructed using single‐walled carbon nanotubes (SWNTs) attached to a self‐assembled monolayer of 11‐amino‐1‐undecanethiol on a gold surface. The voltammetric peak of methylene blue (MB), which interacts with the DNA guanine bases specifically, was used to follow the DNA hybridization process. After DNA hybridization with its complementary DNA strand, the MB electrochemical...
A gold surface modified with a self‐assembled monolayer of 11‐amino‐1‐undecanethiol (AUT) was used for the covalent immobilization of oxidized single‐walled carbon nanotubes (SWNTs). The as‐described SWNTs‐modified substrate was subsequently used to attach single‐stranded deoxyribonucleic acid (ssDNA) used as a substrate for DNA hybridization. Electrochemical impedance spectroscopy measurements were...
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