Langmuir and Langmuir-Blodgett Films from Amphiphilic Pillar[5]arene-Containing [2]Rotaxanes.
Fiche publication
Date publication
mai 2015
Auteurs
Membres identifiés du Cancéropôle Est :
Dr GALLANI Jean-Louis
Tous les auteurs :
Trinh TM, Nierengarten I, Holler M, Gallani JL, Nierengarten JF
Lien Pubmed
Résumé
Amphiphilic pillar[5]arene-containing [2]rotaxanes have been prepared and fully characterized. In the particular case of the [2]rotaxane incorporating a 1,4-diethoxypillar[5]arene subunit, the structure of the compound was confirmed by X-ray crystal structure analysis. Owing to a good hydrophilic/hydrophobic balance, stable Langmuir films have been obtained for these rotaxanes and the size of the peripheral alkyl chains on the pillar[5]arene subunit has a dramatic influence on the reversibility during compression-decompression cycles. Indeed, when these are small enough, molecular reorganization of the rotaxane by gliding motions are capable of preventing strong pi-pi interactions between neighboring macrocycles in the thin film.
Référence
Chemistry. 2015 May 26;21(22):8019-22