Piling Up Pillar[5]arenes To Self‐Assemble Nanotubes |
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| Authors: | Dr Iwona Nierengarten Dr Sebastiano Guerra Dr Haifa Ben Aziza Dr Michel Holler Prof Rym Abidi Prof Joaquín Barberá Prof Robert Deschenaux Dr Jean‐François Nierengarten |
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| Affiliation: | 1. Laboratoire de Chimie des Matériaux Moléculaires, Université de Strasbourg et CNRS (UMR 7509), Ecole Européenne de Chimie, Polymères et Matériaux, Strasbourg Cedex 2, France;2. Institut de Chimie, Université de Neuchatel, Neuchatel, Switzerland;3. Laboratoire d'Applications de la Chimie aux Ressources et Substances Naturelles et l'Environnement, Faculté des Sciences de Bizerte, Université de Carthage, Zarzouna Bizerte, Tunisia;4. Departamento de Química Orgánica, Instituto de Ciencia de Materiales de Arágon, Universidad de Zaragoza-CSIC, Zaragoza, Spain |
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| Abstract: | New liquid‐crystalline pillar5]arene derivatives have been prepared by grafting first‐generation Percec‐type poly(benzylether) dendrons onto the macrocyclic scaffold. The molecules adopt a disc‐shaped structure perfectly suited for self‐organization into a columnar liquid‐crystalline phase. In this way, the pillar5]arene cores are piled up, thus forming a nanotubular wire encased within a shell of peripheral dendrons. The capability of pillar5]arenes to form inclusion complexes has been also exploited. Specifically, detailed binding studies have been carried out in solution with 1,6‐dicyanohexane as the guest. Inclusion complexes have also been prepared in the solid state. Supramolecular organization into the Colh mesophase has been deduced from X‐ray diffraction data and found to be similar to that observed within the crystal lattice of a model inclusion complex prepared from 1,4‐dimethoxypillar5]arene and 1,6‐dicyanohexane. |
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| Keywords: | inclusion complexes liquid crystals pillar[5]arenes self-assembly supramolecular chemistry |
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