An Electrochemical DNA Sensor Based on Conducting Polymer Electrode
In this paper, a DNA aptamer was detected by electrochemical DNA sensors. To enhance the sensitivity and selectivity, the working electrode surface of the electrochemical sensor was modified by a synthesis of poly-pyrrole nanowires. Characterization of poly-pyrrole nanowire was verified by SEM images. The evaluation of DNA sensors was implemented using EC301 Potentiostat from SRS. The sensor can detect the DNA concentration as low as 10−12 mol/l. A series of measurement were conducted, which showed the relationship between DNA concentrations and peak current.
KeywordsElectrochemical DNA sensors Potentiostat Conducting polymer
This research is supported by The World Academy of Science (TWAS) under Grant no. 16-169 RG/PHYS/AS_I-FR3240293345.
Conflict of Interest Statement The authors declare that there is no conflict of interest.
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