Cesium-selective chemically modified field effect transistors with calix[4]arene-crown-6 derivatives

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Lugtenberg, Ronny J.W. and Brzozka, Zbigniew and Casnati, Alessandro and Ungaro, Rocco and Engbersen, Johan F.J. and Reinhoudt, David N. (1995) Cesium-selective chemically modified field effect transistors with calix[4]arene-crown-6 derivatives. Analytica Chimica Acta, 310 (2). pp. 263-267. ISSN 0003-2670

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Abstract:Calix[4]arene-crown-6 derivatives (1–3) in the 1,3-alternate conformation, incorporated in poly(vinylchloride) membranes of CHEMFETs, exhibit good Cs+-selectivity and Nernstian behaviour. The Cs+-selectivity over Na+, i.e., log KpotCs,Na = −3.3, is slightly better than observed for bis(18-crown-6) derivatives (log KpotCs,Na = −3.0). The CHEMFETs respond sub-Nernstian in the presence of NH+4 and K+. Model calculations show that this can be explained by the small difference between the stability constants of the Cs+− and K+-complexes and by the high partition coefficient of NH+4 in favour of the membrane phase, respectively.

Item Type:Article
Copyright:© 1995 Elsevier
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Science and Technology (TNW)
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Link to this item:http://purl.utwente.nl/publications/12382
Official URL:http://dx.doi.org/10.1016/0003-2670(95)00139-Q
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Metis ID: 106635