Chemically modified field-effect transistors; a sodium ion selective sensor based on calix[4]arene receptor molecules

Brunink, Jos A.J. and Haak, Jan R. and Bomer, Johan G. and Reinhoudt, David N. and McKervey, M. Anthony and Harris, Stephen J. (1991) Chemically modified field-effect transistors; a sodium ion selective sensor based on calix[4]arene receptor molecules. Analytica Chimica Acta, 254 (1-2). pp. 75-80. ISSN 0003-2670

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Abstract:	The development of an ion-sensitive field-effect transistor for sodium ions is described. Cahx[4]arene derivatives incorporated in a poly(vinyl chloride)-based membrane provide the selectivity. A poly(2-hydroxyethyl methacrylate) interlayer between the silicon dioxide gate and the sensing membrane is necessary to obtain a Na+-sensitive ISFET with Nernstian behaviour. The potentiometric selectivity coefficients (log Kij pot) for Na+ over K+ and Li+ are ¿1.9 and ¿2.5,
Item Type:	Article
Copyright:	© 1991 Elsevier Science
Research Group:	Supramolecular Chemistry and Technology (SMCT) Biomedical and Environmental Sensor systems (BIOS)
Link to this item:	http://purl.utwente.nl/publications/12543
Official URL:	http://dx.doi.org/10.1016/0003-2670(91)90011-S
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