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Trends in Inorganic Chemistry   Volumes    Volume 5 
Abstract
Receptors for the electrochemical sensing of transition metal ions and anions in aqueous environments
Ramón Martínez-Máñez, Juan Soto, Jose Manuel Lloris, Teresa Pardo
Pages: 183 - 203
Number of pages: 21
Trends in Inorganic Chemistry
Volume 5 

Copyright © 1998 Research Trends. All rights reserved

ABSTRACT
 
Potentiometric and electrochemical studies carried out on several ferrocene-functionalised pH-responsive molecules to determine the potential use of soluble receptors in aqueous environments for the selective electrochemical sensing of metal ions and anions are reported. In considering the interaction of the redox-active molecule and substrates some studies are of interest: (i) the development of a model for determining the maximum oxidation potential shift by interaction of the redox-active receptor and the substrate, and (ii) the relation between the different species in aqueous solution and the electrochemical response. Selective electrochemical response in aqueous environments against metal ions such as Hg2+, Cu2+ and the selective electrochemical sensing of the anions phosphate, sulphate and ATP in the presence of competing guests is shown. Selected examples point out the importance of the molecular architecture in the selective recognition process.
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