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Book title: Sensors
Edition: 162
Editors: Baldini F, D'Amico A, Di Natale C, Siciliano P, Seeber R, De Stefano L, Bizzarri R, Andò B
Publisher: Springer
City: New York
ISBN: 978-1-4614-3859-5
Series title: Lecture Notes in Electrical Engineering

Abstract: Ion selective electrodes (ISE) for organic ions are in principle suitable for rapid in situ determinations. A critical point in the development of ISEs is to find out specific receptors. In this investigation the possibility of developing solid state ISEs with molecularly imprinted acrylic polymers (MIP) as a recognition element was investigated. As a proof case, an all-solid-state ISE for dopamine (DAH+) was prepared. In order to attain a real miniaturization of the whole measuring device, the reference electrode too was an all-solid-state one, based on the same polymer used for the working electrode but in the absence of template. A screen printed graphite electrode modified with multiwalled carbon nanotubes as an ion to electron transducing layer was used as conducting substrate. The cell potential linearly increases at dopamine concentration higher than 10-4 M, but the sensibility is less than nernstian (16 mV/dec). The sensor is very selective for the template
Template and target information: dopamine