Title: Electrochemical synthesis of polypyrrole for biosensor application

Authors: Bui Dai Nhan; Mai Anh Tuan

Addresses: International Training Institute for Material Science, Hanoi University of Science and Technology, No. 1, Dai Co Viet Road, Hanoi, Vietnam ' International Training Institute for Material Science, Hanoi University of Science and Technology, No. 1, Dai Co Viet Road, Hanoi, Vietnam

Abstract: Polypyrrole nanowires were electrochemically synthesised on platinum electrode at ambient temperature. The potentiostatic potential was set at 0.75 V in the presence of gelatin as soft mould. The whole process only took few hundred seconds. The morphologies, chemical composition and conductivity of nanowires were evaluated by means of Scanning Electron Microscopy (SEM), Fourier Transform Infrared Spectroscopy (FT-IR) and cyclic voltammetry (CV). The obtained nano-wire is around 50 nm in diameter with large surface, good conductivity. By surface enhanced Raman spectroscopy, the amine groups of polypyrrole were thought to be orientated upwards into the analyte which may facilitate the direct binding with DNA in DNA sensor.

Keywords: polypyrrole nanowires; gelatine; cyclic voltammetry; biosensors; nanotechnology; platinum electrodes; DNA binding; DNA sensors.

DOI: 10.1504/IJNT.2013.053128

International Journal of Nanotechnology, 2013 Vol.10 No.3/4, pp.154 - 165

Available online: 05 Apr 2013 *

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