Electropolymerized molecularly imprinted polymers as receptor layers in capacitive chemical sensors

  • The first application of molecularly imprinted polymers to chemical sensors with capacitive detection is described. The sensitive layer was prepared by electropolymerization of phenol on gold electrodes in the presence of the template (phenylalanine). The insulating properties of the polymer layer were studied by electrochemical impedance spectroscopy. Electrical leakages through the polymer layer were suppressed by deposition of a self-assembled monolayer of mercaptophenol before polymerization and of alkanethiol after polymerization. At the final stage of sensor preparation, the template was removed. The multilayer system obtained displayed a decrease in electrical capacitance on addition of phenylalanine. Only a low response was observed toward other amino acids and phenol.

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Metadaten
Author: Tanya Panasyuk-Delaney, Vladimir M. MirskyORCiDGND, Sergey A. Piletsky, Otto S. WolfbeisGND
DOI:https://doi.org/10.1021/ac9903196
ISSN:0003-2700
ISSN:1520-6882
Title of the source (English):Analytical Chemistry
Document Type:Scientific journal article peer-reviewed
Language:English
Year of publication:1999
Volume/Year:71
Issue number:20
First Page:4609
Last Page:4613
Faculty/Chair:Fakultät 2 Umwelt und Naturwissenschaften / FG Nanobiotechnologie
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