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A New Phosphonium Calix[4]arene for Selective Anion Recognition: Synthesis and Studies in Solution and in Ion Selective Electrodes |
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| Authors: | Radoslaw Pomecko Zouhair Asfari Véronique Hubscher-Bruder Maria Bochenska |
| Institution: | 1. IPHC-DSA, ULP, CNRS , 25 rue Becquerel, 67087, Strasbourg, France;2. Department of Chemical Technology , Chemical Faculty, Gdansk University of Technology , ul. Narutowicza 11/12, 80-264, Gdansk, Poland;3. IPHC-DSA, ULP, CNRS , 25 rue Becquerel, 67087, Strasbourg, France;4. Department of Chemical Technology , Chemical Faculty, Gdansk University of Technology , ul. Narutowicza 11/12, 80-264, Gdansk, Poland |
| Abstract: | The synthesis and characterization of a new tetra (triphenylphosphonium) p-tert-butylcalix4]arene 2 is presented. Its interactions with anions were studied by 1H and 31P NMR and UV absorption spectrophotometry, showing the biggest interaction with ClO4 ? , I? and SCN? . Anion selectivity in ion-selective PVC-membrane electrodes (ISEs) plasticized with o-NPOE containing ionophore 2 was also investigated. Compound 2 shows a potentiometric response for various anions with the following selectivity pattern: ClO4 ? > SCN? > I? > Cr2O7 2 ? > NO3 ? > Br? > Cl? . |
| Keywords: | Calix[4]arene Perchlorate Phosphonium group Anion complexation ISE |