Remarkable thallium(I) selectivity for ion sensors based on π-coordination of calix[4]arene neutral carriers

Syntheses and Cation‐Binding Abilities of Thiacalix[4]arene Derivtives

“…This could be explained by the smaller size of divalent metal ions compared with those of monovalent metal ions causing the weak coordination with thiacalix [4]arene derivatives. The two large anions of the picrate also effect the complexation.…”

Novel Thallium(I)-Selective Membrane Electrode Based on a Podal Ligand

“…As can be seen, the proposed electrode in terms of selectivity coefficient is superior to all of the thallium ionselective electrodes reported in the literature. [7][8][9][10] The proposed thallium ion-selective electrode was found to work well under laboratory conditions. This electrode was used as an indicator electrode in the titration of thallium(I) with K 2 S, and the resulting titration curve is shown in Figure 6.…”

“…Crown ether and calix [4]aren derivatives have been tested as thallium(I)-neutral carriers for ion-selective electrodes, [3][4][5][6][7][8][9][10][11][12] and the resulting thallium(I)-selective electrodes gave good results. However, since crown ethers and calix [4]arens generally have a high affinity for alkali-metal ions and in some cases silver, these thallium(I) electrodes suffer from severe interference by Na In the present study, we wish to introduce a novel thallium(I) electrode by incorporation of a podal ligand as a suitable neutral ionophore for fast monitoring of thallium ion.…”

Highly Selective Detection of Titanium (III) in Industrial Waste Water Samples Using Meso-octamethylcalix[4]pyrrole-Doped PVC Membrane Ion-Selective Electrode

“…Calixarenes chemistry includes the study of non-covalent intermolecular interactions, which are mostly weak and reversible in nature. Calixarene derivatives construct complex through coordination bonds between the donor atoms such as oxygen, nitrogen or sulfur with the target cation, as well as p-coordination of the cation with the electron-rich aromatic rings [5][6][7][8][9]. Due to the ability of the calixpyrroles in binding to the cations through mentioned mechanism, OMCP is developed as a cation receptor in this study.…”