Horizontal expansion of biicosahedral M13-based nanoclusters: resolving decades-long questions. Issue 11 (5th October 2022)

• Record Type: Journal Article
• Authors: Zhou, Chuanjun; Pan, Peiyao; Wei, Xiao; Lin, Zidong; Chen, Cheng; Kang, Xi; Zhu, Manzhou
• Is Part Of: Nanoscale horizons. Volume 7:Issue 11(2022)
• Page Start: 1397
• Page End: 1403
• Publication Date: 2022-10-05
• Subjects: Nanoscience -- Periodicals; Nanotechnology -- Periodicals; 620.505
• DOI: 10.1039/d2nh00321j
• Languages: English
• ISSNs: 2055-6756

Abstract

Abstract : The horizontal expansion of biicosahedral M25 has been accomplished, yielding an [Au19 Ag12 (S-Adm)6 (DPPM)6 Cl7 ] 2+ nanocluster that loads bidentate phosphine and bulky thiol ligands. 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 [Au19 Ag12 (S-Adm)6 (DPPM)6 Cl7 ] 2+ nanocluster that contains an Au13 Ag12 kernel and six Au1 (DPPM)1 (S-Adm)1 peripheral wings. The structural determination of [Au19 Ag12 (S-Adm)6 (DPPM)6 Cl7 ] 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 [Au19 Ag12 (S-Adm)6 (DPPM)6 Cl7 ] 2+ and previously reported [Au13 Ag12 (PPh3 )10 Cl8 ] 2+ or [Au13 Ag12 (SR)5 (PPh3 )10 Cl2 ] 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.