期刊
LANGMUIR
卷 28, 期 24, 页码 8959-8964出版社
AMER CHEMICAL SOC
DOI: 10.1021/la204684u
关键词
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资金
- National Natural Science Foundation for Distinguished Youth Scholars of China [21025310]
- China-Korea Joint Research Project [2010DFA51700]
- 100-Talent Program of Chinese Academy of Sciences
- National Natural Science Foundation of China [60736041, 10874238]
- Knowledge Innovation Program of the Chinese Academy of Sciences [Y1 V2013L11]
We have synthesized Au@Ag core-shell nanocubes containing Au cores with varying shapes and sizes through modified seed-mediated methods. Bromide ions are found to be crucial in the epitaxial growth of Ag atoms onto Au cores and in the formation of the shell's cubic shape. The Au@Ag core-shell nanocubes exhibit very abundant and distinct localized surface plasmon resonance (LSPR) properties, which are core-shape and size-dependent. With the help of theoretical calculation, the physical origin and the resonance mode profile of each LSPR peak are identified and studied. The core-shell nanocrystals with varying shaped cores offer a new rich category for LSPR control through the plasmonic coupling effect between core and shell materials.
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