Issue 18, 2022

Mechanistic insights into Ag+ induced size-growth from [Au6(DPPP)4]2+ to [Au7(DPPP)4]2+ clusters

Abstract

The size conversion of atomically precise metal nanoclusters lays the foundation to elucidate the inherent structure–activity correlations on the nanometer scale. Herein, the mechanism of the Ag+-induced size growth from [Au6(dppp)4]2+ to [Au7(dppp)4]3+ (dppp is short for 1,3-bis(diphenylphosphino)propane) is studied via density functional theory (DFT) calculations. In the absence of extra Au sources, the one “Au+” addition was found to be regulated by the Ag+ doping induced Au-activation, i.e., the formation of formal Au(I) blocks via the Ag+ alloying processes. The Au(I) blocks could be extruded from the core structure in the formed Au–Ag alloy clusters, triggering a facile Au+ migration to the Au6 precursor to form the Au7 product. This study sheds light on the structural and stability changes of gold nanoclusters upon the addition of Ag+ and will hopefully benefit the development of more metal ion-induced size-conversion of metal nanoclusters.

Graphical abstract: Mechanistic insights into Ag+ induced size-growth from [Au6(DPPP)4]2+ to [Au7(DPPP)4]2+ clusters

Associated articles

Supplementary files

Article information

Article type
Paper
Submitted
12 May 2022
Accepted
02 Jul 2022
First published
04 Jul 2022
This article is Open Access
Creative Commons BY-NC license

Nanoscale Adv., 2022,4, 3737-3744

Mechanistic insights into Ag+ induced size-growth from [Au6(DPPP)4]2+ to [Au7(DPPP)4]2+ clusters

Y. Lv, X. Wu, S. He and H. Yu, Nanoscale Adv., 2022, 4, 3737 DOI: 10.1039/D2NA00301E

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