1. Self-Assembly and Disassembly of Vesicles as Controlled by Anion-π Interactions.
- Author
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He, Qing, Ao, Yu‐Fei, Huang, Zhi‐Tang, and Wang, De‐Xian
- Subjects
AMPHIPHILES ,ANIONS ,SODIUM dodecylbenzenesulfonate ,X-ray diffraction ,MASS spectrometry - Abstract
Anion-π interactions have been widely studied as new noncovalent driving forces in supramolecular chemistry. However, self-assembly induced by anion-π interactions is still largely unexplored. Herein we report the formation of supramolecular amphiphiles through anion-π interactions, and the subsequent formation of self-assembled vesicles in water. With the π receptor 1 as the host and anionic amphiphiles, such as sodium dodecylsulfate (SDS), sodium laurate (SLA), and sodium methyl dodecylphosphonate (SDP), as guests, the sequential formation of host-guest supramolecular amphiphiles and self-assembled vesicles was demonstrated by SEM, TEM, DLS, and XRD techniques. The intrinsic anion-π interactions between 1 and the anionic amphiphiles were confirmed by crystal diffraction, HRMS analysis, and DFT calculations. Furthermore, the controlled disassembly of the vesicles was promoted by competing anions, such as NO
3 − , Cl− , and Br− , or by changing the pH value of the medium. [ABSTRACT FROM AUTHOR]- Published
- 2015
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