Insights into the effect of regulation of molecular composition on the properties of (AuAg)9 clusters

Xiaoxun Yan; Shangyu Su; Xiaowu Li; Shan Jin; Manzhou Zhu

doi:10.1039/D3DT00202K

Insights into the effect of regulation of molecular composition on the properties of (AuAg)₉ clusters†

Xiaoxun Yan,‡^a Shangyu Su,‡^a Xiaowu Li,^a Shan Jin

*^a and Manzhou Zhu

*^a

Author affiliations

* Corresponding authors

^a Institutes of Physical Science and Information Technology and Centre for Atomic Engineering of Advanced Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Department of Chemistry and Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University, Hefei, Anhui 230601, China
E-mail: jinshan@ahu.edu.cn, zmz@ahu.edu.cn

Abstract

The precise tuning of cluster composition helps us to understand the relationship between clusters and their properties. In this context, on the basis of [Au₄Ag₅(SAdm)₆(Dppm)₂](BPh₄) (HSAdm is 1-adamantanethiol, C₁₀H₁₅SH; Dppm is bis(diphenylphosphino)methane, Ph₂PCH₂PPh₂), the control of the internal metal, surface thiol, and surface phosphine ligand was accomplished, with the formations of [Au_6.5Ag_2.5(SAdm)₆(Dppm)₂](BPh₄), [Au₄Ag₅(S-c-C₆H₁₁)₆(Dppm)₂](BPh₄) and [Au₄Ag₅(SAdm)₆(VDPP-2H)₂](BPh₄) (HS-c-C₆H₁₁ is cyclohexanethiol; VDPP is 1,1-bis(diphenylphosphino)ethylene, (Ph₂P)₂C [double bond, length as m-dash] CH₂; and VDPP-2H is 1,1-bis(diphenylphosphine) ethane derived from the reduction of VDPP, (Ph₂P)₂CHCH₃). The structures of [Au_6.5Ag_2.5(SAdm)₆(Dppm)₂](BPh₄) and [Au₄Ag₅(S-c-C₆H₁₁)₆(Dppm)₂](BPh₄) were determined by single-crystal X-ray crystallography (SC-XRD), while that of [Au₄Ag₅(SAdm)₆(VDPP-2H)₂](BPh₄) was confirmed via ESI-MS measurements. The control of the metal, thiol and phosphine ligand affects the electronic structure and optical properties of the [Au₄Ag₅(SAdm)₆(Dppm)₂](BPh₄) cluster. Overall, the nanoclusters [Au₄Ag₅(SAdm)₆(Dppm)₂](BPh₄), [Au_6.5Ag_2.5(SAdm)₆(Dppm)₂](BPh₄), [Au₄Ag₅(S-c-C₆H₁₁)₆(Dppm)₂](BPh₄) and [Au₄Ag₅(SAdm)₆(VDPP-2H)₂](BPh₄) provide a chance to explore the effect of regulation of metals and surface ligands on electronic and optical properties.

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Article information

DOI: https://doi.org/10.1039/D3DT00202K
Article type: Paper
Submitted: 20 Jan 2023
Accepted: 24 Feb 2023
First published: 24 Feb 2023

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Dalton Trans., 2023,52, 4251-4259

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Insights into the effect of regulation of molecular composition on the properties of (AuAg)₉ clusters

X. Yan, S. Su, X. Li, S. Jin and M. Zhu, Dalton Trans., 2023, 52, 4251 DOI: 10.1039/D3DT00202K

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