title: Reversible Guest Uptake/Release by Redox-Controlled Assembly/Disassembly of a Coordination Cage.
abstract: Controlling the guest expulsion process from a receptor is of critical importance in various fields. Several coordination cages have been recently designed for this purpose, based on various types of stimuli to induce the guest release. Herein, we report the first example of a redox-triggered process from a coordination cage. The latter integrates a cavity, the panels of which are based on the extended tetrathiafulvalene unit (exTTF). The unique combination of electronic and conformational features of this framework (i.e. high π-donating properties and drastic conformational changes upon oxidation) allows the reversible disassembly/reassembly of the redox-active cavity upon chemical oxidation/reduction, respectively. This cage is able to bind the three-dimensional B12 F12 (2-) anion in a 1:2 host/guest stoichiometry. The reversible redox-triggered disassembly of the cage could also be demonstrated in the case of the host-guest complex, offering a new option for guest-delivering control.
authors.affiliation: Université d'Angers, CNRS UMR 6200, Laboratoire MOLTECH-Anjou, 2 bd Lavoisier, 49045, Angers Cedex, France.
authors.forename: Vincent
authors.initials: V
authors.lastname: Croué
authors.affiliation: Université d'Angers, CNRS UMR 6200, Laboratoire MOLTECH-Anjou, 2 bd Lavoisier, 49045, Angers Cedex, France. sebastien.goeb@univ-angers.fr.
authors.forename: Sébastien
authors.initials: S
authors.lastname: Goeb
authors.affiliation: Université d'Angers, CNRS UMR 6200, Laboratoire MOLTECH-Anjou, 2 bd Lavoisier, 49045, Angers Cedex, France.
authors.forename: György
authors.initials: G
authors.lastname: Szalóki
authors.affiliation: Université d'Angers, CNRS UMR 6200, Laboratoire MOLTECH-Anjou, 2 bd Lavoisier, 49045, Angers Cedex, France.
authors.forename: Magali
authors.initials: M
authors.lastname: Allain
authors.affiliation: Université d'Angers, CNRS UMR 6200, Laboratoire MOLTECH-Anjou, 2 bd Lavoisier, 49045, Angers Cedex, France. marc.salle@univ-angers.fr.
authors.forename: Marc
authors.identifier: http://orcid.org/0000-0003-4601-6334
authors.initials: M
authors.lastname: Sallé
keywords: cage compounds; self-assembly; sulfur heterocycles; supramolecular chemistry; tetrathiafulvalene