Polysiloxane based CHEMFETs for selective detection of Ca2+ ions

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Different siloxane copolymers have been used as membrane materials for Ca2+ selective chemically modified field effect transistors (CHEMFETs). CHEMFETs with 3-benzoylaminopropyl-functionalized polysiloxane membranes and 1 wt% borate anions are intrinsically selective for Ca2+ ions. This selectivity can be further enhanced by the incorporation of a Ca2+ selective 1,3 alternate calix[4]arene which is functionalized with four amido groups. The highest Ca2+ selectivties were obtained with CHEMFETs containing this calix[4]arene ionophore in 3-cyanopropyl-functionalized polysiloxane membranes.
Original languageUndefined
Pages (from-to)225-229
JournalAnalytica chimica acta
Issue number3
Publication statusPublished - 1997


  • IR-11715
  • METIS-106301

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