Imaging Science and Photochemistry ›› 2014, Vol. 32 ›› Issue (2): 157-162.DOI: 10.7517/j.issn.1674-0475.2014.02.157

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Synthesis of Triangular Gold Nanoplates Mediated by Tobacco Mosaic Virus

ZHANG Baihui1,3, ZHOU Quan2,3, BIAN Tong1,3, YU Huijun1,3, FAN Hua1,3, NIU Zhongwei2, WU Lizhu1, TONG Zhenhe(TUNG Chen-ho)1, ZHANG Tierui1   

  1. 1. Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China;
    2. National Engineering Research Center of Engineering Plastics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China;
    3. University of Chinese Academy of Sciences, Beijing 100049, P.R. China
  • Received:2013-11-12 Revised:2013-11-25 Online:2014-03-15 Published:2014-03-15

Abstract:

Triangular gold nanoplates were successfully prepared through a room-temperature aquatic biosythetic route mediated by tobacco mosaic virus. The viruses treated with alkali were used as reducing agent and co-structure-directing agent. The structure and optical properties of gold nanoplates were characterized by high-resolution transmission electron microscopy (HRTEM), selected area electron diffraction (SAED) and ultraviolet-visible spectroscope. The as-prepared triangular gold nanoplates are (111)-oriented single crystals. The edge length of the triangular gold nanoplates ranges from 40 to 120 nm and the thickness is about 15 nm. The gold nanoplates have two typical surface plasmonic resonance absorption peaks in the visible light region, which endows them with promising applications in the field of imaging, biosensing and catalysis.

Key words: gold, triangular nanoplates, tobacco mosaic virus, bioreduction