Publication Type |
Journal Article |
Title |
Conducting polymers with attached platinum nanoparticles towards the development of DNA biosensors |
Authors |
V. C. Ferreira A. I. Melato A. F. Silva L. M. Abrantes |
Groups |
|
Journal |
ELECTROCHEMISTRY COMMUNICATIONS |
Year |
2011 |
Month |
September |
Volume |
13 |
Number |
9 |
Pages |
993-996 |
Abstract |
Based on the strong interaction of noble metal particles with the sulphur atoms of thiophene derivatives, platinum nanoparticles (Pt-NPs)-dispersed poly(3-methylthiophene) (P\3-MeTh\) thin films have been successfully prepared. Evidence of the Pt-NPs confinement in the polymer was provided by the electrocatalytic activity of the modified electrodes towards the dissolved oxygen reduction reaction. The efficient immobilization by self-assembly of thiolated oligonucleotides on the embedded Pt-NPs could be monitored by electrochemical quartz crystal microbalance (EQCM) as well as the subsequent hybridization with the complementary sequence. The good conducting properties and high surface area of P(3-MeTh)/Pt-NPs modified electrodes also allowed the detection of both processes by cyclic voltammetry. (C) 2011 Elsevier B.V. All rights reserved. |
DOI |
http://dx.doi.org/10.1016/j.elecom.2011.06.021 |
ISBN |
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Publisher |
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Book Title |
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ISSN |
1388-2481 |
EISSN |
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Conference Name |
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Bibtex ID |
ISI:000294940600026 |
Observations |
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