Tuesday, October 4, 2022
HomeNanotechnologyHorizontal Growth of Biicosahedral M13-Primarily based Nanoclusters: Resolving Many years-Lengthy Questions

Horizontal Growth of Biicosahedral M13-Primarily based Nanoclusters: Resolving Many years-Lengthy Questions


For steel nanoclusters with the “cluster of clusters” intramolecular evolution sample, most efforts have been made in direction of the vertical superposition of icosahedral nanobuilding blocks (e.g., from mono-icosahedral Au13 to bi-icosahedral Au25 and tri-icosahedral Au37), whereas the horizontal growth of those rod-shaped multi-icosahedral aggregates was largely uncared for. We herein report the horizontal growth of the biicosahedral M25 cluster framework, yielding an Au19Ag12(S-Adm)6(DPPM)6Cl7 nanocluster that comprises an Au13Ag12 kernel and 6 Au1(DPPM)1(S-Adm)1 peripheral wings. The structural dedication of Au19Ag12(S-Adm)6(DPPM)6Cl7 resolved a decades-long query for rod-shaped multi-icosahedral aggregates: how one can load bidentate phosphine and ponderous thiol ligands onto the nanocluster framework? The structural comparability between Au19Ag12(S-Adm)6(DPPM)6Cl7 and beforehand reported Au13Ag12(PPh3)10Cl8 or Au13Ag12(SR)5(PPh3)10Cl2 rationalized the distinctive packing of Au1(DPPM)1(S-Adm)1 motif buildings on the floor of the previous nanocluster. Total, this work presents the horizontal growth of rod-shaped multi-icosahedral nanoclusters, which gives new insights into the preparation of novel icosahedron-based aggregates with each vertically and horizontally rising extensions.

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