纳米颗粒
胶体金
化学
肽
两亲性
纳米技术
分散性
螺旋(腹足类)
生物矿化
自组装
组合化学
结晶学
化学工程
材料科学
有机化学
生物化学
生态学
蜗牛
生物
工程类
共聚物
聚合物
作者
Chun-Long Chen,Peijun Zhang,Nathaniel L. Rosi
摘要
Left-handed gold nanoparticle double helices were prepared using a new method that allows simultaneous synthesis and assembly of discrete nanoparticles. This method involves coupling the processes of peptide self-assembly of and peptide-based biomineralization of nanoparticles. In this study, AYSSGAPPMPPF (PEPAu), an oligopeptide with an affinity for gold surfaces, was modified with an aliphatic tail to generate C12−PEPAu. In the presence of buffers and gold salts, amphiphilic C12−PEPAu was used to both control the formation of monodisperse gold nanoparticles and simultaneously direct their assembly into left-handed gold nanoparticle double helices. The gold nanoparticle double helices are highly regular, spatially complex, and they exemplify the utility of this methodology for rationally controlling the topology of nanoparticle superstructures and the stereochemical organization of discrete nanoparticles within these structures.
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