Abstract
This article summarises our work on the development of voltammetric sensors based on molecularly imprinted polymers. Several recognition elements and integration strategies were used:
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1.
membranes electropolymerised at the electrode surface;
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2.
casting of polymeric membranes by drop-coating a solution of pre-formed polymer (polyphosphazene) and template in a low-boiling-point solvent on to the electrode surface;
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3.
preparation of composite membranes containing conductive material (graphite or carbon black), acrylic-type molecularly imprinted polymers (small particle size), and PVC as binder; and
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4.
in-situ polymerisation of a thin layer of acrylic imprinted polymer deposited on the electrode surface by spin coating.
All the options evaluated offer the possibility of controlling electrode characteristics such as hydrophobic/hydrophilic character, permeability, or film thickness, which are essential for obtaining good sensor performance.
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Acknowledgements
Financial support from the Spanish government (Ministerio de Ciencia y Tecnología, project No. BQ-2002–00261) is acknowledged. S. Gutiérrez-Fernández thanks FICYT for a grant.
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Blanco-López, M.C., Gutiérrez-Fernández, S., Lobo-Castañón, M.J. et al. Electrochemical sensing with electrodes modified with molecularly imprinted polymer films. Anal Bioanal Chem 378, 1922–1928 (2004). https://doi.org/10.1007/s00216-003-2330-2
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DOI: https://doi.org/10.1007/s00216-003-2330-2