The Chaotropic Effect as an Assembly Motif in Chemistry.
The Chaotropic Effect as an Assembly Motif in Chemistry.
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DOI:
10.1002/anie.201804597
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发表时间:
2018-10-22
期刊:
影响因子:
--
通讯作者:
Nau WM
中科院分区:
文献类型:
--
作者:
Assaf KI;Nau WM
Following up on scattered reports on interactions of conventional chaotropic ions (for example, I−, SCN−, ClO4 −) with macrocyclic host molecules, biomolecules, and hydrophobic neutral surfaces in aqueous solution, the chaotropic effect has recently emerged as a generic driving force for supramolecular assembly, orthogonal to the hydrophobic effect. The chaotropic effect becomes most effective for very large ions that extend beyond the classical Hofmeister scale and that can be referred to as superchaotropic ions (for example, borate clusters and polyoxometalates). In this Minireview, we present a continuous scale of water–solute interactions that includes the solvation of kosmotropic, chaotropic, and hydrophobic solutes, as well as the creation of void space (cavitation). Recent examples for the association of chaotropic anions to hydrophobic synthetic and biological binding sites, lipid bilayers, and surfaces are discussed.
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