Chromogenic calix[4]arene as ionophore for potentiometric and optical sensors

Klára Tóth, Bui Thi Thu Lan, Judit Jeney, Mária Horváth, István Bitter, Alajos Grün, Béla Ágai, László Tódke

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Chromogenic calix[4]arene derivative was synthesized and tested as an ionophore for potentiometric and optical sensors. Distinct sodium selectivity was observed with this ionophore based, plasticized PVC membranes in potentiometric measurements suggesting their utility for biological applications. Optode membranes exhibited sodium sensitivity in the 5 × 10-2 -10-4 M concentration range. The optical sensitivity was improved by the use of an internal, lipophilic base (TDDA). The operation of the optical sensor is in accordance with the ion-exchange theory.

Original languageEnglish
Pages (from-to)1041-1049
Number of pages9
Issue number6
Publication statusPublished - Jun 1994


ASJC Scopus subject areas

  • Analytical Chemistry

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