Issue 11, 2022

Horizontal expansion of biicosahedral M13-based nanoclusters: resolving decades-long questions

Abstract

For metal nanoclusters with the “cluster of clusters” intramolecular evolution pattern, most efforts have been made towards the vertical superposition of icosahedral nanobuilding blocks (e.g., from mono-icosahedral Au13 to bi-icosahedral Au25 and tri-icosahedral Au37), while the horizontal expansion of these rod-shaped multi-icosahedral aggregates was largely neglected. We herein report the horizontal expansion of the biicosahedral M25 cluster framework, yielding an [Au19Ag12(S-Adm)6(DPPM)6Cl7]2+ nanocluster that contains an Au13Ag12 kernel and six Au1(DPPM)1(S-Adm)1 peripheral wings. The structural determination of [Au19Ag12(S-Adm)6(DPPM)6Cl7]2+ resolved a decades-long question towards rod-shaped multi-icosahedral aggregates: how to load bidentate phosphine and bulky thiol ligands onto the nanocluster framework? The structural comparison between [Au19Ag12(S-Adm)6(DPPM)6Cl7]2+ and previously reported [Au13Ag12(PPh3)10Cl8]2+ or [Au13Ag12(SR)5(PPh3)10Cl2]2+ rationalized the unique packing of Au1(DPPM)1(S-Adm)1 motif structures on the surface of the former nanocluster. Overall, this work presents the horizontal expansion of rod-shaped multi-icosahedral nanoclusters, which provides new insights into the preparation of novel icosahedron-based aggregates with both vertically and horizontally growing extensions.

Graphical abstract: Horizontal expansion of biicosahedral M13-based nanoclusters: resolving decades-long questions

Supplementary files

Article information

Article type
Communication
Submitted
08 Jul 2022
Accepted
23 Sep 2022
First published
23 Sep 2022

Nanoscale Horiz., 2022,7, 1397-1403

Horizontal expansion of biicosahedral M13-based nanoclusters: resolving decades-long questions

C. Zhou, P. Pan, X. Wei, Z. Lin, C. Chen, X. Kang and M. Zhu, Nanoscale Horiz., 2022, 7, 1397 DOI: 10.1039/D2NH00321J

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