Titel
Ni12 tetracubane cores with slow relaxation of magnetization and efficient charge utilization for photocatalytic hydrogen evolution
Autor*in
Joan Cano
Department of Quı´mica Inorga`nica/Instituto de Ciencia Molecular (ICMol), Facultat de Quimica, Universitat de Vale`ncia
Autor*in
Samar Batool
TU Wien, Institute of Materials Chemistry
... show all
Abstract
We report two Ni12 multicubane topologies enclosed in the polyanions [Ni12(OH)9(WO4)3(PO4)(B-α-PW9O34)3]21−{Ni12W30} and [Ni12(OH)9(HPO4)3(PO4)(B-α-PW9O34)(A-α-PW9O34)2]21−{Ni12W27} that magnetically behave as Ni12 units clearly distinguishing them from typical Ni4 cubanes as shown by magnetic studies together with high field and frequency electron paramagnetic resonance (HFEPR). Beyond the unprecedented static properties, {Ni12W30} shows the unusual coexistence of slow relaxation of the magnetization and a diamagnetic ground state (S = 0), providing the unique opportunity of studying the essentially elusive magnetic relaxation behavior in excited states. The cubane-topology dependent activity of {Ni12W30} and {Ni12W27} as homogeneous HER photocatalysts unveils the structural key features significant for the design of photocatalysts with efficient charge utilization exemplified by high quantum yields (QY) of 10.42% and 8.36% for {Ni12W30} and {Ni12W27}, respectively.
Stichwort
Materials ChemistryGeneral Chemistry
Objekt-Typ
Sprache
Englisch [eng]
Persistent identifier
Erschienen in
Titel
Journal of Materials Chemistry C
Band
10
Ausgabe
45
ISSN
2050-7526
Erscheinungsdatum
2022
Seitenanfang
17048
Seitenende
17052
Publication
Royal Society of Chemistry (RSC)
Projekt
Kod / Identifikator
P33089
Projekt
Kod / Identifikator
P32801
Erscheinungsdatum
2022
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