物理化学学报 >> 2012, Vol. 28 >> Issue (11): 9999-9999.doi: 10.3866/PKU.WHXB201208172

撤稿 上一篇    

【撤稿】Au纳米颗粒二维超晶格结构的稳定性

翟薇, 王建元   

  1. 西北工业大学理学院, 西安 710072
  • 收稿日期:2012-07-04 修回日期:2012-08-16 发布日期:2012-10-17
  • 通讯作者: 王建元 E-mail:wangjy@nwpu.edu.cn
  • 基金资助:

    陕西省自然科学基金(2012JQ8013), 航空基金(2011ZF53065)和西北工业大学基础研究基金(JC201155, JC20110280)资助项目

【Retracted】Stability of Au Nanocrystals in 2D Superlattice

ZHAI Wei, WANG Jian-yuan   

  1. School of Science, Northwestern Polytechnical University, Xi’an, 710072, P.R. China
  • Received:2012-07-04 Revised:2012-08-16 Published:2012-10-17
  • Supported by:

    The project was supported by the Natural Science Foundation of Shaanxi Province, China (2012JQ8013), Aviation Foundation of China (2011ZF53065), and NPU Foundation for Fundamental Research (JC201155, JC20110280).

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摘要：

尊敬的欧阳编辑：

       您好！非常抱歉，我们近期的实验工作发现，已经在贵刊录用的文章‘Au纳米颗粒二维自组装及其稳定性（WHXB2012-07-026）”的部分实验内容存在一定的问题。本着严谨的科学态度，我们申请撤稿。这也是由于我们从事这一方向的研究经验不足导致的。
       由此，浪费了您和审稿人的宝贵时间，并且增添了很多麻烦，再次深感歉意。
       王建元 翟薇

关键词: Au纳米颗粒, 自组织, 二维超晶格结构, 稳定性

Abstract:

We synthesized 5.5 nm Au nanocrystals coated by dodecanethiol (C12SH26) by reverse micelle method. The Au nanocrystals are multiply twinned particles (MTP), which are mainly characterized by decahedral and icosahedral structures. The 2D hexagonal network self-organizationa of Au nanocrystals are realized on both amorphous carbon (AC) and highly oriented pyrolitic graphite (HOPG) surfaces. The stability of 2D superlattices of Au nanocrystals in vacuum has been systematically surveyed, and it is found that large single triangular nanocrystals have been formed after 75 days due to the coalescence among the neighboring nanoparticles and the rearrangement of the atomics. When the Au nanocrystals in 2D organizations are annealed in air (573 K, 15 min), higher ordered 2D self-assemblies are stable, whereas worm-like coalesced nanoparticles form in those less ordered organizations. This demonstrates that the thermal stability of 2D self-assemblies is determined by the level of nanocrystals ordering.

Key words: Au nanocrystals, Self-organization, 2D superlattice, Stability

MSC2000: 

  • O641