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Electropolymerized Molecularly Imprinted Polymers as Receptor Layers in Capacitive Chemical Sensors

Year: 1999

Type: article

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.

Source: Analytical Chemistry

DOI: 10.1021/ac9903196

Authors: Tatiana L. Panasyuk, Vladimir M. Mirsky, Sergey A. Piletsky, Otto S. Wolfbeis

Institutions: University of Regensburg, Institute of Molecular Biology and Genetics

Language: English

Topic: Analytical chemistry methods development

Subfield: Analytical Chemistry

Field: Chemistry

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W2007712302

FWCI: 6.541

Cites: 19

Cited by: 275

Related to: 10