Journal
LANGMUIR
Volume 33, Issue 23, Pages 5829-5834Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.langmuir.7b00992
Keywords
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Funding
- Innovative Research Groups of the NSFC [21421064]
- National Basic Research Program [2013CB834502]
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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 bisquatemary. 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.
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