期刊
SOFT MATTER
卷 7, 期 5, 页码 1726-1731出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c0sm00917b
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资金
- National Natural Science Foundation of China [20873001, 20633010, 21073006, 50821061]
- National Basic Research Program of China [2007CB936201]
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@2 beta-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@2 beta-CD aggregates share a consistent building block, the channel-type crystalline bilayer membrane. Moreover, since the outer surface of SDS@2 beta-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@2 beta-CD is envisioned to open new possibilities for self-assembly chemistry.
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