Effects of Cu doping on the structure and optical properties of Au11(dppf)4Cl2 nanocluster
An alloy nanocluster of Au11-xCux(dppf)4Cl2(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 Au11(dppf)4Cl2.The difference lies in that Cu atoms replace the inner shell Au atoms that are coordinated with the Cl atom.Therefore,Au11-xCux(dppf)4Cl2 can be regarded as Cu-doped Au11(dppf)4Cl2.The introduction of Cu atoms exerts an influence on the electronic property of the template nanoclus-ter with the structural framework maintained,further resulting in a red shift of the optical absorption.CCDC:2321758.
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