09112 IUPAC Gold Book - membranes with mobile charged sites 10.1351/goldbook.09112 09112 current 1 Kind of ion-selective membranes used in an ISE comprising: Positively-charged, hydrophobic cations which, when dissolved in a suitable organic solvent and held in an inert support (e.g., poly(propylenecarbonate) filter or \(\ce{PVC}\)), provide membranes which are sensitive to changes in the activities of anions. Negatively-charged hydrophobic anions which, when dissolved in a suitable organic solvent and held in an inert support (e.g., poly(propylene carbonate) filter or \(\ce{PVC}\)), provide membranes which are sensitive to changes of cation activities. Uncharged “carrier” electrodes based on solutions of molecular complexing agents of cations and anions, which can be used for preparing ion exchanger membranes sensitive and selective to certain cations and anions. Hydrophobic ion-pair electrodes of plasticized polymers (e.g., \(\ce{PVC}\)) containing a dissolved hydrophobic ion-pair respond to the ion activities of those components, which are relevant to the ion-pairs incorporated in the membrane. The responses can be Nernstian. Quaternary ammonium cations or cations of substitutionally inert, transition metal complexes of such ligands as derivatives of 1,10-phenanthroline. Of type \(\ce{(RO)2PO2-}\), tetra-p-chlorophenylborate, dinonylnaphthalene sulfonate Ion-dipole forming agents: antibiotics, macrocyclic compounds or other sequestering agents. Adduct forming agents, such as organotin compounds, activated carbonyl compounds, and some porphyrins. Cationic drug substance as cation tetraphenylborate, or an anionic drug substance as tetraalkylammonium salt of the anion. ion-selective membranes https://goldbook.iupac.org//terms/view/09119 PAC, 2020, 92, 641. 'Terminology of Electrochemical Methods of Analysis (IUPAC Recommendations 2019)' on page 664 (https://doi.org/10.1515/pac-2018-0109) https://goldbook.iupac.org/terms/view/09112/html https://goldbook.iupac.org/terms/view/09112/json https://goldbook.iupac.org/terms/view/09112/plain Citation: 'membranes with mobile charged sites' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.09112 The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/) for individual terms. If you are interested in licensing the Gold Book for commercial use, please contact the IUPAC Executive Director at executivedirector@iupac.org . The International Union of Pure and Applied Chemistry (IUPAC) is continuously reviewing and, where needed, updating terms in the Compendium of Chemical Terminology (the IUPAC Gold Book). Users of these terms are encouraged to include the version of a term with its use and to check regularly for updates to term definitions that you are using. 2026-05-12T04:48:11+00:00