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Hofmeister Series: Insights of Ion Specificity from Amphiphilic Assembly and Interface Property.


ABSTRACT: Hofmeister series (HS), ion specific effect, or lyotropic sequence acts as a pivotal part in a number of biological and physicochemical phenomena, e.g., changing the solubility of hydrophobic solutes, the cloud points of polymers and nonionic surfactants, the activities of various enzymes, the action of ions on an ion-channel, and the surface tension of electrolyte solutions, etc. This review focused on how ion specificity influences the critical micelle concentration (CMC) and how the thermoresponsive behavior of surfactants, and the dynamic transition of the aggregate, controls the aggregate transition and gel formation and tunes the properties of air/water interfaces (Langmuir monolayer and interfacial free energy). Recent progress of the ion specific effect in bulk phase and at interfaces in amphiphilic systems and gels is summarized. Applications and a molecular level theoretical explanation of HS are discussed comprehensively. This review is aimed to supply a fresh and comprehensive understanding of Hofmiester phenomena in surfactants, polymers, colloids, and interface science and to provide a guideline to design the microstructures and templates for preparation of nanomaterials.

SUBMITTER: Kang B 

PROVIDER: S-EPMC7114165 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature

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Hofmeister Series: Insights of Ion Specificity from Amphiphilic Assembly and Interface Property.

Kang Beibei B   Tang Huicheng H   Zhao Zengdian Z   Song Shasha S  

ACS omega 20200320 12


Hofmeister series (HS), ion specific effect, or lyotropic sequence acts as a pivotal part in a number of biological and physicochemical phenomena, e.g., changing the solubility of hydrophobic solutes, the cloud points of polymers and nonionic surfactants, the activities of various enzymes, the action of ions on an ion-channel, and the surface tension of electrolyte solutions, <i>etc</i>. This review focused on how ion specificity influences the critical micelle concentration (<i>CMC</i>) and how  ...[more]

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