Synthesis and Optical Properties of Cubic Gold Nanoframes  

作　　者：Leslie Au Yeechi Chen Fei Zhou Pedro H.C.Camargo Byungkwon Lim Zhi-Yuan Li David S.Ginger Younan Xia 

机构地区：[1]Department of Chemistry,University of Washington,Seattle,Washington 98195,USA [2]Institute of Physics,Chinese Academy of Sciences,Beijing 100080,China [3]Department of Biomedical Engineering,Washington University,St.Louis,Missouri 63130,USA

出　　处：《Nano Research》2008年第6期441-449,共9页纳米研究（英文版）

基　　金：This work was supported in part by a Director’s Pioneer Award from the NIH(5DPOD000798,Y.X.);the Air Force Office of Scientific Research(D.S.G.and Y.C.);the National Science Foundation(DMR 0520567,D.S.G.and Y.C.);the National Natural Science Foundation of China(10525419,60736041,and 10874238,Z.Y.L.)。

摘　　要：This paper describes a facile method of preparing cubic Au nanoframes with open structures via the galvanic replacement reaction between Ag nanocubes and AuCl_(2)^(-).A mechanistic study of the reaction revealed that the formation of Au nanoframes relies on the diffusion of both Au and Ag atoms.The effect of the edge length and ridge thickness of the nanoframes on the localized surface plasmon resonance peak was explored by a combination of discrete dipole approximation calculations and single nanoparticle spectroscopy.With their hollow and open structures,the Au nanoframes represent a novel class of substrates for applications including surface plasmonics and surface-enhanced Raman scattering.

关 键 词：Gold nanostructures galvanic replacement hollow nanostructures localized surface plasmon resonance surface-enhanced Raman scattering 

分 类 号：O61[理学—无机化学]