Article Title

Synthesis and optical properties of cubic gold nanoframes

Authors

Leslie Au, Department of Chemistry, University of Washington, Seattle, Washington 98195, USA
Yeechi Chen, Department of Chemistry, University of Washington, Seattle, Washington 98195, USA
Fei Zhou, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China
Pedro H. C. Camargo, Department of Biomedical Engineering, Washington University, St. Louis, Missouri 63130, USA
Byungkwon Lim, Department of Biomedical Engineering, Washington University, St. Louis, Missouri 63130, USA
Zhi-Yuan Li, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China
David S. Ginger, Department of Chemistry, University of Washington, Seattle, Washington 98195, USA
Younan Xia, Department of Biomedical Engineering, Washington University, St. Louis, Missouri 63130, USA

Keywords

Gold nanostructures, galvanic replacement, hollow nanostructures, localized surface plasmon resonance, surface-enhanced Raman scattering

Abstract

This paper describes a facile method of preparing cubic Au nanoframes with open structures via the galvanic replacement reaction between Ag nanocubes and AuCl2 . 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.

Graphical Abstract

DOI

https://doi.org/10.1007/s12274-008-8046-z

Publisher

Tsinghua University Press

Recommended Citation

Leslie Au,Yeechi Chen,Fei Zhou,Pedro H. C. Camargo,Byungkwon Lim,Zhi-Yuan Li,David S. Ginger,Younan Xia, Synthesis and optical properties of cubic gold nanoframes. NanoRes.2008, 1: 441-449