The Influence of Flexibility of Alkynyl Ligands on the Formation of an Fcc Au110 Nanocluster

IF 13 2区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Small Pub Date : 2025-04-01 DOI:10.1002/smll.202502106

Feng Hu, Gaoyuan Yang, Zhen-Chao Long, Wan-Qi Shi, Gui-Jie Liang, Jia-Qi Wang, Quan-Ming Wang

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引用次数: 0

Abstract

Isomerization of nanoclusters is helpful for understanding the relationships between structures and properties. Surface-protecting ligands play a crucial role in controlling the atomic packing mode of the inner core. The synthesis and total structural determination of the all alkynyl-protected gold nanocluster (NEt₃CH₂Cl)₂[Au₁₁₀(C≡CC₃H₆Ph)₄₈] (Au₁₁₀-1) are reported. Au₁₁₀-1 and the previously reported [Au₁₁₀(C≡CC₆H₄-4-CF₃)]²⁻ (Au₁₁₀-2) constitute the largest alkynyl-protected nanocluster quasi-isomers (> 100 metal atoms). Both Au₁₁₀ consist of an fcc Au₈₆ kernel and a shell of 24 RC≡C─Au─C≡CR staples, but the specific arrangements are different. The application of the flexible alkynyl ligands creates a significant difference in the face-centered cubic (fcc) kernel structure in Au₁₁₀-1, showing a different electronic structure, thermal- and photo-stability. Transient absorption spectra reveal that Au₁₁₀-1 still does not show any metallic characteristics, even though it has a smaller energy gap (Eg) than Au₁₁₀-2.

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来源期刊

Small 工程技术-材料科学：综合

CiteScore

17.70

自引率

3.80%

发文量

1830

审稿时长

2.1 months

期刊介绍： Small serves as an exceptional platform for both experimental and theoretical studies in fundamental and applied interdisciplinary research at the nano- and microscale. The journal offers a compelling mix of peer-reviewed Research Articles, Reviews, Perspectives, and Comments. With a remarkable 2022 Journal Impact Factor of 13.3 (Journal Citation Reports from Clarivate Analytics, 2023), Small remains among the top multidisciplinary journals, covering a wide range of topics at the interface of materials science, chemistry, physics, engineering, medicine, and biology. Small's readership includes biochemists, biologists, biomedical scientists, chemists, engineers, information technologists, materials scientists, physicists, and theoreticians alike.