Synthesis,Structure and Luminescence Properties of Dumbbell-like Silver Clusters  

作　　者：DING Shu-Ping ZHANG Zong-Yao ZHOU Guo-Jun CAO Rui 丁淑萍;张宗尧;周国军;曹睿(School of Chemistry and Chemical Engineering,Shaanxi Normal University,Xi’an 710119,China;Department of Chemistry,Renmin University of China,Beijing 100872,China)

机构地区：[1]School of Chemistry and Chemical Engineering,Shaanxi Normal University,Xi’an 710119,China [2]Department of Chemistry,Renmin University of China,Beijing 100872,China)versity of China

出　　处：《Chinese Journal of Structural Chemistry》2020年第10期1824-1834,1743,共12页结构化学（英文）

基　　金：the“Thousand Talents Program”of China;the National Natural Science Foundation of China(No.21101170 and 21573139);the Fundamental Research Funds for the Central Universities;the Research Funds of Shaanxi Normal University。

摘　　要：In this work,three stable dumbbell-shaped silver clusters 1~3,formed by a novel bifunctional ligand Ph2P-C6H4-3-C=CH,are presented.All three complexes have cage structures constructed with thirty-six silver atoms,which are templated by chloride anions.During the self-assembly process of silver acetylides,argentophilic interactions and Ag(I)-ethynide interactions are important for the formation of silver cores to yield a diversity of silver clusters.Weak molecular interactions(π-π,C-H…π,C-H…F,C-H…O)are also found in these complexes,which are crucial to stabilizing these silver clusters.Compared with simple alkynyl ligands(RC≡C-),the introduction of phosphine groups into alkynyl ligand can effectively control the undesired infinite growth of silver acetylides.The photophysical behaviors of complexes 1~3 are studied,showing intense orange roomtemperature luminescence in the solid state upon the exposure to UV light.The luminescence mainly arises from ligand-to-metal charge transfer(LMCT)and metal-cluster-centered transitions(MC)within the silver clusters.

关 键 词：silver cluster argentophilic interaction bifunctional ligand Ag(I)-ethynide interaction LUMINESCENCE 

分 类 号：O641.4[理学—物理化学]