Playing with the Chaotropic Effect to Improve the Encapsulation of Decaborate Clusters within Cyclodextrins
Résumé
This paper deals with the formation of host-guest systems between α-, β- and γ- cyclodextrins and the anionic cluster [B10H9NCCH3]-. The inclusion processes within cyclodextrins were evidenced in solution by ESI-MS and NMR, while ITC measurements provided thermodynamic parameters and affinity constants with cyclodextrin. These studies confirm the chaotropic character of this anion and evidence inclusion processes much more favored than that found for the dianionic [B10H10]2- cluster previously reported. This result evidences that playing on the volume and the charge of chaotropic systems can dramatically improve the encapsulation process within cyclodextrins.
Domaines
Chimie| Origine | Fichiers produits par l'(les) auteur(s) |
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