Chiral Transformation: From Single Nanowire to Double Helix

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• 作者：Yong Wang ; Qingxiao Wang ; Hang Sun ; Weiqing Zhang ; Gang Chen ; Yawen Wang ; Xiaoshuang Shen ; Yu Han ; Xianmao Lu ; Hongyu Chen
• 刊名：Journal of the American Chemical Society
• 出版年：2011
• 出版时间：December 21, 2011
• 年：2011
• 卷：133
• 期：50
• 页码：20060-20063
• 全文大小：860K
• 年卷期：v.133,no.50(December 21, 2011)
• ISSN：1520-5126

文摘

We report a new type of water-soluble ultrathin Au鈥揂g alloy nanowire (NW), which exhibits unprecedented behavior in a colloidal solution. Upon growth of a thin metal (Pd, Pt, or Au) layer, the NW winds around itself to give a metallic double helix. We propose that the winding originates from the chirality within the as-synthesized Au鈥揂g NWs, which were induced to untwist upon metal deposition.