A1 Journal article (refereed)
Alkynyl‐Protected Chiral Bimetallic Ag22Cu7 Superatom with Multiple Chirality Origins (2023)
Deng, G., Lee, K., Deng, H., Malola, S., Bootharaju, M. S., Häkkinen, H., Zheng, N., & Hyeon, T. (2023). Alkynyl‐Protected Chiral Bimetallic Ag22Cu7 Superatom with Multiple Chirality Origins. Angewandte Chemie, 62(12), Article e202217483. https://doi.org/10.1002/anie.202217483
JYU authors or editors
Publication details
All authors or editors: Deng, Guocheng; Lee, Kangjae; Deng, Hongwen; Malola, Sami; Bootharaju, Megalamane S.; Häkkinen, Hannu; Zheng, Nanfeng; Hyeon, Taeghwan
Journal or series: Angewandte Chemie
ISSN: 1433-7851
eISSN: 1521-3773
Publication year: 2023
Publication date: 29/12/2022
Volume: 62
Issue number: 12
Article number: e202217483
Publication country: Germany
Publication language: English
DOI: https://doi.org/10.1002/anie.202217483
Publication open access: Not open
Publication channel open access:
Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/84658
Abstract
Understanding the origin of chirality in the nanostructured materials is essential for chiroptical and catalytic applications. Here we report a chiral AgCu superatomic cluster, [Ag22Cu7(C≡CR)16(PPh3)5Cl6](PPh4), Ag22Cu7, protected by an achiral alkynyl ligand (HC≡CR: 3,5-bis(trifluoromethyl)phenylacetylene). Its crystal structure comprises a rare interpenetrating biicosahedral Ag17Cu2 core, which is stabilized by four different types of motifs: one Cu(C≡CR)2, four -C≡CR, two chlorides and one helical Ag5Cu4(C≡CR)10(PPh3)5Cl4. Structural analysis reveals that Ag22Cu7 exhibits multiple chirality origins, including the metal core, the metal-ligand interface and the ligand layer. Furthermore, the circular dichroism spectra of R/S-Ag22Cu7 are obtained by employing appropriate chiral molecules as optical enrichment agents. DFT calculations show that Ag22Cu7 is an eight-electron superatom, confirm that the cluster is chirally active, and help to analyze the origins of the circular dichroism.
Keywords: nanosciences; nanostructures; nanoparticles; materials (matter); atoms; clusters; silver; copper
Contributing organizations
Related projects
- Metalli-molekyyli-rajapintojen nanorakenteet (NaMeMolnt)
- Häkkinen, Hannu
- Research Council of Finland
- Metalli-molekyyli-rajapintojen nanorakenteet (NaMeMoInt)
- Häkkinen, Hannu
- Research Council of Finland
- NANOSTRUCTURED METAL – MOLECULE INTERFACES
- Häkkinen, Hannu
- Research Council of Finland
Ministry reporting: Yes
Reporting Year: 2023
Preliminary JUFO rating: 3