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

R.J.W. Lugtenberg, Zbigniew Brzozka, Alessandro Casnati, Rocco Ungaro, Johannes F.J. Engbersen, David Reinhoudt

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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.
Original languageUndefined
Pages (from-to)263-267
Number of pages5
JournalAnalytica chimica acta
Issue number310
Publication statusPublished - 1995


  • METIS-106635
  • IR-12382

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