Abstract
A series of macrocycles, including crown ethers, cyclodextrins, calixarenes, pillararenes and cucurbiturils, are well known to be able to associate various organic/inorganic/biological guest molecules and ions in their well-defined cyclic cavities to form stable host-guest complexes and supramolecular systems through the cooperative contributions of various non-covalent interactions. When one or more functional groups are attached to the cavity of macrocycles or guest molecules, enhanced and/or controlled host-guest associations may take place, leading to not only improved host-guest binding abilities but also fascinating properties. In this review, some representative contributions in the construction of controllable macrocyclic supramolecular assemblies in aqueous solution are presented with an emphasis on the stimuli-responsive control manner and wide applications of this property.
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