Ammonium-crown ether interactions for the construction of fullerene-containing photoactive supramolecular devices.
Fiche publication
Date publication
juillet 2006
Auteurs
Membres identifiés du Cancéropôle Est :
Dr VAN DORSSELAER Alain, Dr ELHABIRI Mourad
Tous les auteurs :
Nierengarten JF, Hahn U, Duarte TMF, Cardinali F, Solladie N, Walther ME, Van Dorsselaer A, Herschbach H, Leize E, Albrecht-Gary AM, Trabolsi A, Elhabiri M
Lien Pubmed
Résumé
Here, we report our recent progresses in the synthesis and the study of fullerene-containing supramolecular photoactive devices. Our approach is based on the self-assembly Of C-60 derivatives bearing an ammonium unit with functionalized crown ethers. The ammonium-crown ether interaction itself is weak and the K-a values are rather low when the association results only from the binding of the cationic unit with the macrocyclic component. However, when additional recognition elements are present, the stability of the complexes can be dramatically increased. This principle is illustrated with various examples of systems resulting from the self-assembly Of C-60-ammonium derivatives and crown ethers bearing a porphyrin or an oligophenylenevinylene chromophore.
Référence
C R Chim. 2006 Jul-aug;9(7-8):1022-30.