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Multifunctional Polyoxometalate Platforms for Supramolecular Light-Driven Hydrogen Evolution

Maloul, S.; Borg, M. van den; Müller, C.; Zedler, L.; Mengele, A. K.; Gaissmaier, D.; Jacob, T.; Rau, S.; Dietzek-Ivanšić, B.; Streb, C.


Multifunctional supramolecular systems are a central research topic in light-driven solar energy conversion. Here, we report a polyoxometalate (POM)-based supramolecular dyad, where two platinum-complex hydrogen evolution catalysts are covalently anchored to an Anderson polyoxomolybdate anion. Supramolecular electrostatic coupling of the system to an iridium photosensitizer enables visible light-driven hydrogen evolution. Combined theory and experiment demonstrate the multifunctionality of the POM, which acts as photosensitizer/catalyst-binding-site[1] and facilitates light-induced charge-transfer and catalytic turnover. Chemical modification of the Pt-catalyst site leads to increased hydrogen evolution reactivity. Mechanistic studies shed light on the role of the individual components and provide a molecular understanding of the interactions which govern stability and reactivity. The system could serve as a blueprint for multifunctional polyoxometalates in energy conversion and storage.

Verlagsausgabe §
DOI: 10.5445/IR/1000140716
Veröffentlicht am 14.12.2021
DOI: 10.1002/chem.202103817
Zitationen: 3
Web of Science
Zitationen: 2
Zitationen: 6
Cover der Publikation
Zugehörige Institution(en) am KIT Helmholtz-Institut Ulm (HIU)
Publikationstyp Zeitschriftenaufsatz
Publikationsdatum 06.12.2021
Sprache Englisch
Identifikator ISSN: 0947-6539, 1521-3765
KITopen-ID: 1000140716
HGF-Programm 38.02.01 (POF IV, LK 01) Fundamentals and Materials
Erschienen in Chemistry - A European Journal
Verlag John Wiley and Sons
Band 27
Heft 68
Seiten 16846-16852
Nachgewiesen in Dimensions
Web of Science
Globale Ziele für nachhaltige Entwicklung Ziel 7 – Bezahlbare und saubere Energie
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