Cu掺杂对Au_(11)(dppf)_(4)Cl_(2)纳米团簇结构和光学性质的影响  

Effects of Cu doping on the structure and optical properties of Au_(11)(dppf)_(4)Cl_(2) nanocluster

作　　者：周鹏 蔡潇 马清祥[1] 刘旭 ZHOU Peng;CAI Xiao;MA Qingxiang;LIU Xu(School of Chemistry and Chemical Engineering,Ningxia University,Yinchuan 750021,China;School of Chemistry and Chemical Engineering,Nanjing University,Nanjing 210023,China)

机构地区：[1]宁夏大学化学化工学院,银川750021 [2]南京大学化学化工学院,南京210023

出　　处：《无机化学学报》2024年第7期1254-1260,共7页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金项目(No.22101128)资助。

摘　　要：通过一锅还原法成功制备了合金纳米团簇Au_(11-x)Cu_(x)(dppf)_(4)Cl_(2)(x=1、2;dppf=1,1'-双(二苯基膦)二茂铁)。晶体结构解析表明,合金团簇具有与Au_(11)(dppf)_(4)Cl_(2)类似的几何结构,如含有缺陷二十面体金属内核,不同之处在于Cu原子取代了与Cl配位的Au原子。因此,Au_(11-x)Cu_(x)(dppf)_(4)Cl_(2)可视为Cu对Au_(11)(dppf)_(4)Cl_(2)模板团簇的掺杂。Cu原子的引入并未改变模板团簇Au_(11)(dppf)_(4)Cl_(2)的框架结构,但有效调控了电子结构,进而使其光吸收发生红移。An alloy nanocluster of Au_(11-x)Cu_(x)(dppf)_(4)Cl_(2)(x=1,2;dppf=1,1'-bis(diphenylphosphine) ferrocene) was synthesized via a one-pot reduction method.X-ray crystallography shows that this nanocluster has a defective icosahedral core,which is analog to that of Au_(11)(dppf)_(4)Cl_(2).The difference lies in that Cu atoms replace the inner shell Au atoms that are coordinated with the Cl atom.Therefore,Au_(11-x)Cu_(x)(dppf)_(4)Cl_(2) can be regarded as Cu-doped Au_(11)(dppf)_(4)Cl_(2).The introduction of Cu atoms exerts an influence on the electronic property of the template nanocluster with the structural framework maintained,further resulting in a red shift of the optical absorption.CCDC:2321758.

关 键 词：纳米团簇 金属 掺杂 结构 光吸收 

分 类 号：O611.2[理学—无机化学]