Viologen-cucurbituril host/guest chemistry - redox control of dimerization inclusion.
Fiche publication
Date publication
septembre 2021
Journal
RSC advances
Auteurs
Membres identifiés du Cancéropôle Est :
Dr ELHABIRI Mourad
Tous les auteurs :
Dalvand P, Nchimi Nono K, Shetty D, Benyettou F, Asfari Z, Platas-Iglesias C, Olson MA, Trabolsi A, Elhabiri M
Lien Pubmed
Résumé
Two calix[4]arene systems, C23 and C24 - where 2 corresponds to the number of viologen units and 3-4 corresponds to the number of carbon atoms connecting the viologen units to the macrocyclic core - have been synthesized and led to the formation of [3]pseudorotaxanes when combined with either CB[7] or CB[8]. The [3]pseudorotaxanes spontaneously dissociate upon reduction of the bipyridinium units as the result of intramolecular dimerization of the two face-to-face viologen radical cations. CB[7] and CB[8]-based [2]pseudorotaxanes containing monomeric viologen guest model compounds, MC3 and MC, do not undergo decomplexation and dimerization following electrochemical reduction of their bipyridinium units.
Référence
RSC Adv. 2021 Sep 1;11(47):29543-29554