Nonconventional Three-Component Hierarchical Host-Guest Assembly Based on Mo-Blue Ring-Shaped Giant Anion, γ-Cyclodextrin, and Dawson-type Polyoxometalate

Mhamad Aly Moussawi, Mohamed Haouas, Sébastien Floquet, William E. Shepard, Pavel A. Abramov, Maxim N. Sokolov, Vladimir P. Fedin, Stéphane Cordier, Anne Ponchel, Eric Monflier, Jérôme Marrot, Emmanuel Cadot

Результат исследования: Научные публикации в периодических изданияхстатья

29 Цитирования (Scopus)

Аннотация

In this communication, we report on a noteworthy hybrid supramolecular assembly built from three functional components hierarchically organized through noncovalent interactions. The one-pot synthesis procedure leads to the formation of large Mo-blue ring-shaped anion {Mo154}, which contains the supramolecular adduct based on the symmetric encapsulation of the Dawson-type [P2W18O62]6- anion by two γ-cyclodextrin units. Such a nanoscopic onion-like structure, noted [P2W18O62]@2γ-CD@{Mo154} has been characterized by single-crystal X-ray diffraction, thus demonstrating the capability of the giant inorganic torus to develop relevant supramolecular chemistry, probing the strong affinity of the inner and outer faces of the γ-CD for the polyoxometalate surfaces. Furthermore, interactions and behavior in solution have been studied by multinuclear NMR spectroscopy, which supports specific interactions between γ-CD and POM units. Finally, the formation of this three-component hybrid assembly from one-pot procedure, in water and using nearly stoichiometric conditions, is discussed in terms of the driving forces orchestrating this highly efficient multilevel recognition process.

Язык оригиналаанглийский
Страницы (с-по)14376-14379
Число страниц4
ЖурналJournal of the American Chemical Society
Том139
Номер выпуска41
DOI
СостояниеОпубликовано - 18 окт 2017

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