Abstract: In this study, a highly sensitive, electrochemical, and label-free DNA impedimetric sensor was developed using carbonized glass fiber–coal tar pitch (GF–CTP) electrodes supported with gold nanoparticles (AuNPs) for the detection of HIV-1 gene. Thiol-modified GF–CTP electrodes were prepared using amine crosslinking chemistry and AuNPs were self-assembled obtaining highly conductive nanoelectrodes, GF–CTP–ATP–Au. All steps of electrode modifications were characterized using electrochemical, spectroscopic, and microscopic methods. GFâ€...
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