Host–Guest Interaction between Corona[n]arene and Bisquaternary Ammonium Derivatives for Fabricating Supra-Amphiphile

The interactions between a host, water-soluble corona­[n]­arene (S6-CAP), and a series of guests, bisquaternary ammonium derivatives (CnDAs), in water, were investigated. The host and guest can form 1:1 host–guest complex. Their binding constants decrease as the alkyl length of CnDAs increases, whic...

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Veröffentlicht in:Langmuir 2017-06, Vol.33 (23), p.5829-5834
Hauptverfasser: Zeng, Lingda, Guo, Qing-Hui, Feng, Yuanning, Xu, Jiang-Fei, Wei, Yuhan, Li, Zhibo, Wang, Mei-Xiang, Zhang, Xi
Format: Artikel
Sprache:eng
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Zusammenfassung:The interactions between a host, water-soluble corona­[n]­arene (S6-CAP), and a series of guests, bisquaternary ammonium derivatives (CnDAs), in water, were investigated. The host and guest can form 1:1 host–guest complex. Their binding constants decrease as the alkyl length of CnDAs increases, which can be tunable ranging from 103 to 106 M–1. The binding processes are mainly entropy-driven, while the enthalpy changes also play an important role in enhancing the host–guest interactions. In addition, a supra-amphiphile was fabricated with S6-CAP and a normal surfactant bearing bisquaternary ammonium (C4R). The S6-CAP·C4R complex forms micellar aggregates in water, and the system possesses better assembling activity and dilution stability than its building block C4R. This study enriches the families of supra-amphiphiles with a new architecture, and employing such a supra-amphiphile in biofunctional materials is highly anticipated.
ISSN:0743-7463
1520-5827
DOI:10.1021/acs.langmuir.7b00992