| Autor: |
Shimizu, Linda S., Hughes, Andrew D., Smith, Mark D., Samuel, Stevan A., Ciurtin-Smith, Delia |
| Předmět: |
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| Zdroj: |
Supramolecular Chemistry; Jan2005, Vol. 17 Issue 1/2, p27-30, 4p |
| Abstrakt: |
Presented is a review of our research on using macrocyclic bis-ureas as supramolecular building blocks. These macrocycles predictably self-assemble into columnar structures via strong urea-urea hydrogen bonds and pi-stacking interactions. We developed a facile synthetic route to these macrocyclic ureas, confirmed their self-assembly pattern, and are now assessing their potential as a supramolecular building block. A series of bis-urea macrocycles were synthesized and assembled to verify the fidelity of their self-assembly motifs. Ultimately, a large phenylether bis-urea macrocycle was synthesized that formed tubular assemblies containing a guest accessible channel. We have characterized the structure of the assembled nanotubes by NMR and X-ray crystallography and evaluated this new porous solid with respect to its binding properties and specificity. This porous self-assembled material is thermally and chemically stable and can reversibly bind and exchange a variety of guest molecules. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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