配体在连续调节金属-金属界面应变中的非常规作用。
An unconventional role of ligand in continuously tuning of metal-metal interfacial strain.
机构信息
Division of Chemistry and Biological Chemistry, Nanyang Technological University, Singapore 637371.
出版信息
J Am Chem Soc. 2012 Feb 1;134(4):2004-7. doi: 10.1021/ja211086y. Epub 2012 Jan 19.
PMID:22239595
Abstract
We show that embedding of a surface ligand can dramatically affect the metal-metal interfacial energy, making it possible to create nanostructures in defiance of traditional wisdom. Despite matching Au-Ag lattices, Au-Ag hybrid NPs can be continuously tuned from concentric core-shell, eccentric core-shell, acorn, to dimer structures. This method can be extended to tune even Au-Au and Ag-Ag interfaces.
摘要
我们表明，表面配体的嵌入可以显著影响金属-金属界面能，从而有可能创造出违背传统智慧的纳米结构。尽管 Au-Ag 晶格匹配，但 Au-Ag 杂化 NPs 可以连续调谐为同心核壳、偏心核壳、橡果和二聚体结构。该方法可以扩展到调谐甚至 Au-Au 和 Ag-Ag 界面。
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