Electrochemical preparation of polyaniline capped Bi2S3 nanocomposite and its application in impedimetric DNA biosensor

Biomedical Application of Electroactive Polymers in Electrochemical Sensors: A Review

“…A limit of detection of 10 −16 M and a wide linear range of 10 −16 –10 −6 M was achieved. The limit of detection was better than the 4 × 10 −16 M previously reported in the literature [91].…”

Recent advances in ionic liquid-based electrochemical biosensors

“…In addition to noble metals, metal oxides [106], metal sulfides [107] and metal nitrides [108] are all frequently used to modify the biosensors. Zhu et al [107] reported an impedimetric DNA biosensor based on the rod-like bismuth sulfide (rBi 2 S 3 ) nanoparticles. First, the rBi 2 S 3 nanoparticles were modified onto the ionic liquid-carbon paste electrode (IL-CPE), then polyaniline was modified outside the nanoparticles.…”

Impedance sensing of DNA immobilization and hybridization by microfabricated alumina nanopore membranes

“…A large number of impedimetric DNA sensors are based on nanoporous electrodes and rely on redox probe molecules such as Fe(CN) 6 4− for electrochemical (charge transfer) sensing [32][33][34]. It has been shown that CNT modified electrodes can reach a detection limit of 10 −19 M [33].…”