학술논문

Polyoxometalate‐Surfactant Assemblies: Responsiveness to Orthogonal Stimuli.
Document Type
Article
Source
Angewandte Chemie. 6/20/2022, Vol. 134 Issue 25, p1-7. 7p.
Subject
*LIQUID-liquid interfaces
*ELECTROSTATIC interaction
*SURFACE active agents
*CYCLODEXTRIN derivatives
Language
ISSN
0044-8249
Abstract
Integrating different types of supramolecular interactions opens the possibility to generate nanoparticle surfactants (NPSs) at the liquid–liquid interface that are responsive to multiple stimuli. Here we develop a covalently modified polyoxometalate/β‐cyclodextrin (POM/β‐CD) organic–inorganic hybrid, consisting of a negatively charged POM cluster with β‐CD host groups. The POM/β‐CD hybrid can be dispersed in water and interacts at a water/oil interface with ligands dissolved in an oil phase through electrostatic or host–guest interactions, thereby generating POM‐surfactants (POMSs) having pH, redox, and guest‐competitive responsiveness, respectively. By taking advantage of the jamming of POMSs at the interface, a reconfigurable all‐liquid system could be produced that is responsive to orthogonal changes in the external environment. [ABSTRACT FROM AUTHOR]