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Supramolecular barrels from amphiphilic rigid–flexible macrocycles

Nature Materials volume 4, pages 399–402 (2005)Cite this article

An Erratum to this article was published on 26 April 2005

Abstract

Precise control of supramolecular objects requires the rational design of molecular components, because the information determining their specific assembly should be encoded in their molecular architecture1,2,3,4. In this context, diverse self-assembling molecules including liquid crystals5, dendrimers6, block copolymers7, hydrogen-bonded complexes8 and rigid macrocycles9 are being created as a means of manipulating supramolecular structure. Incorporation of a stiff rod-like building block into an amphiphilic molecular architecture leads to another class of self-assembling molecules10. Aggregation of rod building blocks can generate various nanoscale objects including bundles11,12, ribbons13, tubules14,15 and vesicles16, depending on the molecular structure and/or the presence of a selective solvent. We present here an unusual example of supramolecular barrels in the solid and in aqueous solution, based on the self-assembly of amphiphilic rigid–flexible macrocycles driven by non-covalent interactions. Preliminary experiments show that these amphiphilic macrocycles are membrane-active. The amphiphilic macrocycles might thus lead to an excellent model system for exploring biological processes in supramolecular materials.

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Figure 1: Chemical structure of a rigid–flexible macrocycle.
Figure 2: Structural data of rigid–flexible macrocycles.
Figure 3: Supramolecular architectures from self-assembly of rigid–flexible macrocycles.
Figure 4: TEM image of barrel-like tubular structures in an aqueous solution.

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Acknowledgements

We thank the National Creative Research Initiative Program of the Korean Ministry of Science and Technology for financial support of this work and the Pohang Accelerator Laboratory for synchrotron radiation experiments.

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  1. Center for Supramolecular Nano-Assembly and Department of Chemistry, Yonsei University, Seoul, 120-749, Korea

    Won-Young Yang, Jong-Hyun Ahn, Yong-Sik Yoo, Nam-Keun Oh & Myongsoo Lee

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Correspondence to Myongsoo Lee.

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Supplementary Information

Supplementary methods, scheme S1, supplementary tables S1-S8 and supplementary figures S1-S11 (PDF 1818 kb)

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Yang, WY., Ahn, JH., Yoo, YS. et al. Supramolecular barrels from amphiphilic rigid–flexible macrocycles. Nature Mater 4, 399–402 (2005). https://doi.org/10.1038/nmat1373

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