[Zurück]


Vorträge und Posterpräsentationen (mit Tagungsband-Eintrag):

V. Truttmann, N. Barrabés-Rabanal, T. Bürgi, G. Rupprechter:
"Functionalization of Supported Au11 Nanoclusters Through Ligand Exchange and Comparison to Liquid Phase Reactions";
Poster: VSS 2018 - Vienna Young Scientists Symposium, Wien; 07.06.2018 - 08.06.2018; in: "VSS 2018", Book-of-Abstracts.com, (2018), ISBN: 978-3-9504017-8-3; S. 90 - 91.



Kurzfassung englisch:
The properties of ligand protected Au nanoclusters are known to depend on both the size and composition of their metal core, as well as on the nature of the surrounding ligands. This allows to synthesize clusters with various polarities or solubilities, and also different activity in catalytic reactions. Therefore, tuning of cluster catalysts can be achieved by modifying their ligand shell in so called ligand exchange reactions. Although these reactions have been studied widely in the last years, their application has so far been limited to free clusters in solution. For heterogeneous catalytic applications of Au nanoclusters, they are usually immobilized on powder materials, as these catalysts exhibit significantly higher stability and enhanced activity. However, the possibility of introducing new ligands onto supported clusters and therefore, modifying their properties, has not been evaluated so far. In this work, the possibility of post-functionalization of already immobilized clusters by ligand exchange was confirmed. As this allows to selectively modify the properties of nanocluster catalysts, it is likely to find broad application. In addition, it could be shown that the product of the ligand exchange with free clusters in solution versus supported clusters is significantly different.

Erstellt aus der Publikationsdatenbank der Technischen Universität Wien.