Host-Guest Assemblies of Polyoxovanadate Clusters as Supramolecular Catalysts.

Autor: Kalandia G; Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001, Leuven, Belgium., Liu CL; Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001, Leuven, Belgium., Salazar Marcano DE; Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001, Leuven, Belgium., Moussawi MA; Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001, Leuven, Belgium., Bleus S; Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001, Leuven, Belgium., Van Meerbeek B; Department of Oral Health Sciences, BIOMAT & UZ Leuven, Dentistry KU Leuven Kapucijnenvoer 7, 3000, Leuven, Belgium., Dehaen W; Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001, Leuven, Belgium., Parac-Vogt TN; Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001, Leuven, Belgium.
Jazyk: angličtina
Zdroj: Angewandte Chemie (International ed. in English) [Angew Chem Int Ed Engl] 2024 Nov 13, pp. e202420773. Date of Electronic Publication: 2024 Nov 13.
DOI: 10.1002/anie.202420773
Abstrakt: Supramolecular functional materials can be used to overcome some of the most challenging tasks in materials science, where the dynamic nature of supramolecular interactions can be leveraged to fine-tune the properties of the material for a given task. The Lindqvist hexavanadate family of polyoxometalates (POMs) have emerged as particularly interesting candidates to be used in supramolecular materials due to their redox and Lewis acid properties that enable their application in the fields of energy conversion/storage or catalysis. Despite their promising potential, hexavanadate clusters are underrepresented in the field of supramolecular materials, mainly due to the synthetic challenges related to their inherent reactivity. In this work, pillar[5]arene was successfully grafted onto a Lindqvist hexavanadate and the resulting structure was confirmed by single crystal X-ray diffraction (SC-XRD), presenting the first example of a crystal structure of a POMcovalently functionalized with a pillar[5]arene. By introducing a ditopic guest molecule that could interlink pillar[5]arene moieties, host-guest interactions were leveraged as the driving force for the formation of supramolecular assemblies incorporating hexavanadate clusters in a controlled manner. The enhanced catalytic performance of the resulting aggregates confirmed their potential application as functional catalytic materials. This novel approach for developing hexavanadate-based catalysts reported here showcases the potential of using host-guest interactions as a means to introduce catalytically active metal-oxo clusters into supramolecular frameworks.
(© 2024 Wiley-VCH GmbH.)
Databáze: MEDLINE
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