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Reference type: Journal
Authors: Panasyuk TL, Mirsky VM, Piletsky SA, Wolfbeis OS
Article Title: Electropolymerized molecularly imprinted polymers as receptor layers in a capacitive chemical sensors.
Publication date: 1999
Journal: Analytical Chemistry
Volume: 71
Issue: (20)
Page numbers: 4609-4613.
DOI: 10.1021/ac9903196

Abstract: 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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