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Kollmannsberger, Kathrin L. ; Poonam ; Cesari, Cristiana ; Khare, Rachit ; Kratky, Tim ; Boniface, Maxime ; Tomanec, Ondřej ; Michalička, Jan ; Mosconi, Edoardo ; Gagliardi, Alessio ; Günther, Sebastian ; Kaiser, Waldemar ; Lunkenbein, Thomas ; Zacchini, Stefano ; Warnan, Julien ; Fischer, Roland A.:
Mechanistic Insights into ZIF-8 Encapsulation of Atom-Precise Pt(M) Carbonyl Clusters.
In: Chemistry of Materials.
Bd. 35
(2023)
Heft 14
.
- S. 5475-5486.
ISSN 1520-5002
DOI: https://doi.org/10.1021/acs.chemmater.3c00807
Abstract
Precisely designing metal nanoparticles (NPs) is thecornerstonefor maximizing their efficiency in applications like catalysis orsensor technology. Metal-organic frameworks (MOFs) with theirdefined and tunable pore systems provide a confined space to hostand stabilize small metal NPs. In this work, the MOF encapsulationof various atom-precise clusters following the bottle-around-shipapproach is investigated, providing general insights into the scaffoldingmechanism. Eleven carbonyl-stabilized Pt(M) (M = Co, Ni, Fe, and Sn)clusters are employed for the encapsulation in the zeolitic imidazolateframework (ZIF)-8. Infrared and UV/Vis spectroscopy, density functionaltheory, and ab initio molecular dynamics revealed structure-encapsulation relationship guidelines. Thereby,cluster polarization, size, and composition were found to conditionthe scaffolding behavior. Encaging of [NBnMe3](2)[Co8Pt4C2(CO)(24)] (Co8Pt4 ) is thus achieved as the firstMOF-encapsulated bimetallic carbonyl cluster, Co8Pt4 @ZIF-8, and is fully characterized includingX-ray absorption near edge and extended X-ray absorption spectroscopy.ZIF-8 confinement not only promotes property changes, like the T-dependent magnetism, but it also further allows heat-inducedligand-stripping without altering the cluster size, enabling the synthesisof naked, heterometallic, close to atom-precise clusters.
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| Publikationsform: | Artikel in einer Zeitschrift |
|---|---|
| Begutachteter Beitrag: | Ja |
| Zusätzliche Informationen: | WOS:001027007300001 |
| Institutionen der Universität: | Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie |
| Titel an der UBT entstanden: | Nein |
| Themengebiete aus DDC: | 500 Naturwissenschaften und Mathematik > 540 Chemie |
| Eingestellt am: | 13 Jun 2025 07:38 |
| Letzte Änderung: | 13 Jun 2025 07:38 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/93671 |