Analysis of dopamine on printed polymer thin film consisting of multi-walled carbon nanotubes

A novel film consisting of multi-walled carbon nanotubes (MWCNTs) was produced by means of a flexographic printing process on polycarbonate substrate. The electrochemical response of this MWCNT-PC film towards oxidation of dopamine to dopamine- o -quinone was investigated in phosphate buffer solutio...

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Bibliographic Details
Published in:Monatshefte für Chemie 2013-05, Vol.144 (5), p.581-588
Main Authors: Tsierkezos, N. G., Wetzold, N., Ritter, U., Hübler, A. C.
Format: Article
Language:English
Subjects:
Analytical Chemistry
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
Inorganic Chemistry
Organic Chemistry
Original Paper
Physical Chemistry
Theoretical and Computational Chemistry
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Summary:A novel film consisting of multi-walled carbon nanotubes (MWCNTs) was produced by means of a flexographic printing process on polycarbonate substrate. The electrochemical response of this MWCNT-PC film towards oxidation of dopamine to dopamine- o -quinone was investigated in phosphate buffer solution (pH 7) by means of cyclic voltammetry and electrochemical impedance spectroscopy. The findings demonstrate that the MWCNT-PC film possesses good performance for the electrochemical oxidation of dopamine. Namely, the fabricated MWCNT-PC film having a detection limit and sensitivity of 4.06 μM and 0.823 A M −1  cm −2 , respectively, seems to have greater detection ability towards dopamine/dopamine- o -quinone compared to other novel electrodes reported in the literature. The results of the present work are very promising and demonstrate that the MWCNT-PC film could be suitable for the electrochemical analysis of molecules with biological interest. Graphical abstract
ISSN:0026-9247
1434-4475
DOI:10.1007/s00706-012-0914-2