Issue 5, 2011

Aqueous self-assembly of SDS@2β-CD complexes: lamellae and vesicles

Abstract

Cyclodextrin (CD)/surfactant complexes were usually believed to be quite soluble in water and unable to form aggregates because of the hydrophilic outer surface. However, in this work, SDS@2β-CD complex is found to be able to self-assemble into well-defined lamellar structures in concentrated aqueous solution. The lamellae possess unprecedented in-plane solid-crystalline order in addition to classical lamellar liquid-crystalline order. Such a combination in orderliness makes the lamellar phase an intermediate phase between a solid and a liquid crystal. Upon dilution, the lamellae transform to microtubes and then to vesicles. The three classes of SDS@2β-CD aggregates share a consistent building block, the channel-type crystalline bilayer membrane. Moreover, since the outer surface of SDS@2β-CD is hydrophilic, its self-assembly behavior, unlike traditional amphiphilic assembly, does not rely on the hydrophobic effect. Therefore, the present nonamphiphilic self-assembly of SDS@2β-CD is envisioned to open new possibilities for self-assembly chemistry.

Graphical abstract: Aqueous self-assembly of SDS@2β-CD complexes: lamellae and vesicles

Article information

Article type
Paper
Submitted
02 Sep 2010
Accepted
03 Nov 2010
First published
15 Dec 2010

Soft Matter, 2011,7, 1726-1731

Aqueous self-assembly of SDS@2β-CD complexes: lamellae and vesicles

L. Jiang, Y. Peng, Y. Yan and J. Huang, Soft Matter, 2011, 7, 1726 DOI: 10.1039/C0SM00917B

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