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“Host in Host” Supramolecular Core–Shell Type Systems Based on Giant Ring‐Shaped Polyoxometalates
Author(s) -
Falaise Clément,
Khlifi Soumaya,
Bauduin Pierre,
Schmid Philipp,
Shepard William,
Ivanov Anton A.,
Sokolov Maxim N.,
Shestopalov Michael A.,
Abramov Pavel A.,
Cordier Stéphane,
Marrot Jérôme,
Haouas Mohamed,
Cadot Emmanuel
Publication year - 2021
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.202102507
Subject(s) - supramolecular chemistry , molybdate , chalcogenide , small angle x ray scattering , molybdenum , aqueous solution , crystallography , nanoscopic scale , chemistry , materials science , covalent bond , nanotechnology , scattering , inorganic chemistry , crystal structure , organic chemistry , physics , optics
Herein, we show how the chaotropic effect arising from reduced molybdate ions in acidified aqueous solution is able to amplify drastically weak supramolecular interactions. Time‐resolved Small Angle X‐ray Scattering (SAXS) analysis suggests that molybdenum‐blue oligomeric species form huge aggregates in the presence of γ‐cyclodextrin (γ‐CD) which results in the fast formation of nanoscopic {Mo 154 }‐based host‐guest species, while X‐ray diffraction analysis reveals that the ending‐point of the scenario results in an unprecedented three‐component well‐ordered core–shell‐like motif. A similar arrangement was found by using preformed hexarhenium chalcogenide‐type cluster [Re 6 Te 8 (CN) 6 ] 4− as exogenous guest. This seminal work brings better understanding of the self‐assembly processes in general and gives new opportunities for practical applications in the design of complex multicomponent materials via the simplicity of the non‐covalent chemistry.