6533b823fe1ef96bd127e0c0
RESEARCH PRODUCT
Controlling the Host-Guest Interaction Mode through a Redox Stimulus
Enrique OrtíGyörgy SzalókiEric LevillainMarc SalléMagali AllainOlivier AlévêqueSébastien GoebVincent CarréJuan AragóVincent CrouéFrédéric Aubrietsubject
010405 organic chemistryStereochemistrySupramolecular chemistryGeneral MedicineGeneral ChemistryReversible processself-assembly010402 general chemistryElectrochemistry01 natural sciencesRedoxsupramolecular cageCatalysisCoronene0104 chemical scienceschemistry.chemical_compoundchemistryChemical physicsDensity functional theory[CHIM.COOR]Chemical Sciences/Coordination chemistrySelf-assemblyTetrathiafulvaleneexTTFdescription
International audience; A proof-of-concept related to the redox-control of the binding/releasing process in a host-guest system is achieved by designing a neutral and robust Pt-based redox-active metallacage involving two extended-tetrathiafulvalene (exTTF) ligands. When neutral, the cage is able to bind a planar polyaromatic guest (coronene). Remarkably, the chemical or electrochemical oxidation of the host-guest complex leads to the reversible expulsion of the guest outside the cavity, which is assigned to a drastic change of the host-guest interaction mode, illustrating the key role of counteranions along the exchange process. The reversible process is supported by various experimental data (1 H NMR spectroscopy, ESI-FTICR, and spectroelectrochemistry) as well as by in-depth theoretical calculations performed at the density functional theory (DFT) level.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-11-23 |