Wei Xiao, Shen Honglei, Xu Chao, Li Hao, Jin Shan, Kang Xi, Zhu Manzhou
Department of Chemistry and Centre for Atomic Engineering of Advanced Materials, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University, Hefei 230601, P.R. China.
Key Laboratory of Structure and Functional Regulation of Hybrid Materials, Anhui University, Ministry of Education, Hefei 230601, P.R. China.
Inorg Chem. 2021 Apr 19;60(8):5931-5936. doi: 10.1021/acs.inorgchem.1c00355. Epub 2021 Apr 7.
The determination of active sites in metal nanoclusters is of great significance for the in-depth understanding of the structural evolution and the mechanism of physicochemical properties. In this work, the surface active Ag(SR) units of the AgCl(S-Adm) nanocluster are determined, and the active-site tailoring of this nanocluster gives rise to two derivative nanoclusters, i.e., the structure-maintained AgCl(S-Adm)(S--CH) and the structure-growth AgCl(S-Adm)(DPPP). Both Ag and Ag nanoclusters exhibit almost the same cluster framework, but the Ag(S-Adm) active units are regulated to Ag(S-Adm)(DPPP)Cl with the transformation from Ag to Ag. The surface active sites on Ag are rationalized by analyzing its crystal structure and the ligand-exchange-induced cluster transformation. This study provides some inspiration toward the active-site tailoring of nanocluster surface structures, which is significant for the preparation of new cluster-based nanomaterials with customized structures and enhanced performance.
确定金属纳米团簇中的活性位点对于深入理解其结构演变和物理化学性质机制具有重要意义。在这项工作中，确定了AgCl(S-Adm)纳米团簇的表面活性Ag(SR)单元，并且对该纳米团簇进行活性位点剪裁得到了两个衍生纳米团簇，即结构保持的AgCl(S-Adm)(S--CH)和结构生长的AgCl(S-Adm)(DPPP)。Ag和Ag纳米团簇都表现出几乎相同的团簇框架，但是随着从Ag到Ag的转变，Ag(S-Adm)活性单元被调控为Ag(S-Adm)(DPPP)Cl。通过分析Ag的晶体结构和配体交换诱导的团簇转变，对Ag上的表面活性位点进行了合理化解释。该研究为纳米团簇表面结构的活性位点剪裁提供了一些启示，这对于制备具有定制结构和增强性能的新型基于团簇的纳米材料具有重要意义。
