Journal
ELECTROANALYSIS
Volume 25, Issue 6, Pages 1461-1471Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/elan.201200667
Keywords
Back-side contact gold electrodes; Miniaturized biosensors; Gly-Gly-His; Copper(II) ions; Aryl diazonium salts; Self-assembled monolayers
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Funding
- National Center for Research and Development within a framework of LIDER Programme [LIDER/17/202/L-1/09/NCBiR/2010]
- MNS-DIAG [POIG.01.03.01-00-014/08-00]
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Miniaturized planar back-side contact transducers (BSC) with chemically modified gold surface have been utilized as electrochemical sensors. The electrodes have been functionalized by sequential immobilization of aryl diazonium salts or alkanethiols and short peptide Gly-Gly-His. The applicability of gold substrates modified with aryl diazonium salts in voltammetric detection of copper(II) ions in aqueous solutions has been studied. The combination of two fundamental elements of the solid-state electrode, i.e. back-side contact (BSC) gold sensor and self-assembled monolayers, allowed one to obtain reliable miniaturized copper(II) ion sensors. It can have important future applications in environmental sensing or in implantable biodevices.
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