Electrosynthesis of polyaniline nanowires/silver nanoparticles nanocomposite applied in development of electrochemical DNA sensors

Tran Thi Luyen; Le Dieu Thu

doi:10.51316/jca.2021.138

Authors

Tran Thi Luyen School of Chemical Engineering, Hanoi University of Science and Technology
Le Dieu Thu School of Chemical Engineering, Hanoi University of Science and Technology

DOI:

https://doi.org/10.51316/jca.2021.138

Keywords:

electrosynthesis, polyaniline nanowires, silver nanoparticles, nanocomposite, electrochemical DNA sensors

Abstract

New methods for synthesis of metal nanoparticles (MeNPs) embedded in polyaniline (PANi) structures will open interesting opportunities in advanced applications based on PANi/MeNPs nanocomposites like electrochemical DNA sensors. The synergy of PANi nanostructures and MeNPs offers special electrochemical properties that cannot be obtained by PANi and MeNPs individually. Based on these strategies, in this work, a two-step electrochemical procedure was used to synthesize directly a sandwich-structured polyaniline nanowires/silver nanoparticles (PANi NWs/AgNPs) nanocomposite onto a Pt working microelectrode (with only 0.785 mm² area). The combination between PANi NWs and AgNPs will be expected to simplify DNA probe immobilization and to enhance electrochemical signals of DNA sensors.

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