Year: 2024
Type: article
Abstract: 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.
Authors: Givi Kalandia, Cui‐Lian Liu, David E. Salazar Marcano, Mhamad Aly Moussawi, Sem Bleus, Bart Van Meerbeek, Wim Dehaen, Tatjana N. Parac‐Vogt
Institutions: KU Leuven, Universitair Ziekenhuis Leuven
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: green
Awards: Dynamic Interlocked Structures Based on Hybrid Polyoxometalates, Development of novel supramolecular assemblies based on proteins and polyoxometalates, G3022184869, G390001599, G4673916260, Synthetic platform for the controlled incorporation of multiple polyoxometalates into discrete hybrid structures, Mass spectrometer platform for inorganic and organic liquid analysis., High throughput - high sensitivity automated multinuclear 600 MHz NMR platform, STEM/EDS for high-resolution imaging and chemical element mapping to study soft and hard tissues, biomaterials and interfacial biomaterial-tissue interactions. A multifunctional research instrument with broad multidisciplinary application., G6605303272, G695341644, G7398272297, Supramolecular assemblies based on polyoxometalates and pillar[n]arenes, Polyoxometalate-based Metal-Organic Assemblies Towards Supramolecular Catalysis, G821696452, G8452325521
OpenAlex ID: W4404319547