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Issue 31, 2019
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Mono- and hexa-palladium doped silver nanoclusters stabilized by dithiolates

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Abstract

The synthesis, via a co-reduction method, of the first Pd-containing silver-rich 21-metal-atom nanocluster passivated by dithiolates, [PdAg20{S2P(OnPr)2}12] (1), is reported. 1 is an 8 electron superatom isoelectronic to [Ag21{S2P(OiPr)2}12]+. The doping of Pd in 1 leads to its high stability against degradation in solution and shows red emission in MeTHF at 77 K. In addition, we report the X-ray crystal structure of a multi-palladium doped silver nanocluster, [Pd6Ag14(S){S2P(OnPr)2}12] (2), for the first time. Its X-ray structure exhibits a sulfide-centered Pd6Ag2 rhombohedron surrounded by twelve additional silver atoms with S6 symmetry. The XPS study and DFT calculations indicate that 2 contains Pd(0) and Ag(I) metals. A significant decrease in the electrochemical gap was observed in the SWVs of 2.

Graphical abstract: Mono- and hexa-palladium doped silver nanoclusters stabilized by dithiolates

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Article information


Submitted
14 Jun 2019
Accepted
19 Jul 2019
First published
22 Jul 2019

Nanoscale, 2019,11, 14581-14586
Article type
Communication

Mono- and hexa-palladium doped silver nanoclusters stabilized by dithiolates

S. K. Barik, T. Chiu, Y. Liu, M. Chiang, F. Gam, I. Chantrenne, S. Kahlal, J. Saillard and C. W. Liu, Nanoscale, 2019, 11, 14581
DOI: 10.1039/C9NR05068J

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