Scientific Results

One-dimensional polyaniline nanotubes for enhanced chemical and biochemical sensing

Year: 2011

Authors: Berti F., Marrazza G., Mascini M., Todros S., Baratto C., Ferroni M., Faglia G., Lakshmi D., Chianella I., Whitcombe M.J., Piletsky S., Turner A.P.F.

Autors Affiliation: Department of Chemistry, University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino, Italy; Department of Chemistry and Physics, CNR – IDASC SENSOR Laboratory, University of Brescia, Via Valotti 9, 25133 Brescia, Italy; Cranfield Health, Cranfield University, Cranfield, Bedfordshire, MK43 0AL, United Kingdom

Abstract: In this work we explored a simple, cheap and fast route to grow polyaniline (PANI) nanotubes arranged in an ordered structure directly on an electrode surface by electrochemical polymerisation. The deposited nanostructures were electrochemically and morphologically characterised and then used as a functional substrate for biochemical sensing by combining the intrinsic advantages of nanostructures as optimal transducers and the well known benefits of molecularly imprinted polymers (MIPs) as receptors. The hybrid nanostructured-MIP sensor was applied to the molecular recognition of catechol. Moreover, a gas sensing application was also investigated by exploiting resistance variation of the polymer in presence of different gases (CO, NO 2, NH3 and ethanol).

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More Information: Sponsors: BioAge; Libreria Bonanzinga; FINE Permeation Tubes
KeyWords: Biochemical sensing; Electrode surfaces; Gas sensing applications; Molecularly imprinted polymer; Ordered structures; Polyaniline nanotubes; Resistance variations, Electrodes; Ethanol; Functional polymers; Gas sensing electrodes; Microsystems; Molecular biology; Molecular recognition; Nanotubes; Phenols; Plasma waves; Sensors, Polyaniline
DOI: 10.1007/978-94-007-1324-6_48

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