A Water-Soluble Cryptophane Decorated with Aromatic Amine Groups Shows High Affinity for Cesium and Thallium(I) - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of Organic Chemistry Année : 2024

A Water-Soluble Cryptophane Decorated with Aromatic Amine Groups Shows High Affinity for Cesium and Thallium(I)

Un cryptophane soluble dans l'eau fonctionnalisé avec des groupements amines aromatiques montre une très forte affinité pour le césium et le thallium(I)

Patrick Berthault
Kévin Chighine
  • Fonction : Auteur
Estelle Léonce
  • Fonction : Auteur
Thierry Brotin
Nicolas De Rycke

Résumé

An anti-cryptophane decorated with three aromatic amine and three phenol groups shows a high affinity for the cesium and thallium cations in LiOH/H2O (0.1 M). The formation of the complexes was studied by 133Cs NMR and by 205Tl NMR spectroscopy at different temperatures. Characteristic signals for caged cesium and thallium were observed at a high field with respect to the signals of the free cations present in the bulk. Isothermal titration calorimetric experiments performed in LiOH/H2O (0.1 M) and NaOH/KCl buffer (pH = 13) allowed us to determine the parameter of complexation and to ascertain the high affinity of this cryptophane for cesium and thallium. A comparison with other cryptophanes that bind these two cations shows that the introduction of nitrogen atoms into the cryptophane backbone has an effect on the binding properties. The affinity for cesium and thallium(I) ions is in the following order of substitution: OH > NH2 > OCH2COOH. This study paves the way to the design of new efficient host molecules for the extraction of these two cations in aqueous solution.

Domaines

Chimie
Fichier non déposé

Dates et versions

hal-04524120 , version 1 (27-03-2024)

Identifiants

Citer

Rajaa Benchouaia, Martin Doll, Patrick Berthault, Kévin Chighine, Estelle Léonce, et al.. A Water-Soluble Cryptophane Decorated with Aromatic Amine Groups Shows High Affinity for Cesium and Thallium(I). Journal of Organic Chemistry, 2024, ⟨10.1021/acs.joc.3c02791⟩. ⟨hal-04524120⟩
1 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More