Single thiolate replacement of metal nanoclusters  

作　　者：Ambreen Ambreen Yue Zhou Wanmiao Gu Qing You Liang Fang Guoqing Bian Nan Yan Nan Xia Zhikun Wu 

机构地区：[1]Key Laboratory of Materials Physics,Anhui Key Laboratory of Nanomaterials and Nanotechnology,Institute of Solid State Physics,Hefei Institutes of Physical Science(HFIPS),Chinese Academy of Sciences,Hefei,230031,China [2]University of Science and Technology of China,Hefei,230601,China [3]Institute of Physical Science and Information Technology,Anhui University,Hefei,230601,China

出　　处：《Science China Chemistry》2024年第2期523-528,共6页中国科学（化学英文版）

基　　金：supported by the National Natural Science Foundation of China (21925303,21829501,21771186,22171268,22171267,21971246);the Anhui Provincial Natural Science Foundation(2108085MB56);the HFIPS Director’s Fund (BJPY2019A02,YZJJ202102,YZJJ202306-TS);the Collaborative Innovation Program of Hefei Science Center,Chinese Academy of Sciences (2020HSC-CIP005,2022HSCCIP018)。

摘　　要：Surface thiolates play important roles in evincing the structures and properties of thiolated metal nanoclusters—one type of recently emerging inorganic-organic hybrids,and thus the thiolate substitution,especially single thiolate substitution,is highly desirable for subtly tailoring the structures and properties of metal nanoclusters.However,such a single-thiolate substituting is challenging,and its influence on the metal-metal and metal-sulfur bonds remains mysterious due to the absence of the singlethiolate-substituted structure.Here,we developed a combined method,concurrently synthesized the single-thiolate-substituted nanocluster and its parent nanocluster,and successfully resolved their structures by single crystal X-ray crystallography,which reveals that the single thiolate substitute has an obvious influence on the metal-metal and metal-sulfur bond lengths although it has no effect on the absorption profile.Interestingly,the metal-metal and metal-sulfur bonds show various thermal extensibility and even the negative thermal expansion phenomena of the Au–S bond were observed in the single-thiolate-substituted nanocluster.The bond length-related stability was also observed.Overall,this study highlights a novel synthesis method and offers novel structural insights and an in-depth structure-property correlation of thiolated metal nanoclusters.

关 键 词：metal nanoclusters single thiolate replacement thermal expansion STABILITY intercluster interaction 

分 类 号：TB383.1[一般工业技术—材料科学与工程] O641.4[理学—物理化学]