Chiral transformation: From single nanowire to double helix

Yong Wang, Qingxiao Wang, Hang Sun, Weiqing Zhang, Gang Chen, Yawen Wang, Xiaoshuang Shen, Yu Han, Xianmao Lu, Hongyu Chen

Research output: Contribution to journalArticlepeer-review

90 Scopus citations


We report a new type of water-soluble ultrathin Au-Ag 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-Ag NWs, which were induced to untwist upon metal deposition. © 2011 American Chemical Society.
Original languageEnglish (US)
Pages (from-to)20060-20063
Number of pages4
JournalJournal of the American Chemical Society
Issue number50
StatePublished - Dec 21 2011

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: We thank Prof. Chan Yin Thai from National University of Singapore for the helpful advice. This work was supported by the MOE (ARC 13/09) and A*Star (102-152-0018) of Singapore.

ASJC Scopus subject areas

  • Biochemistry
  • Colloid and Surface Chemistry
  • Chemistry(all)
  • Catalysis


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