高等学校化学学报

高等学校化学学报 ›› 2010, Vol. 31 ›› Issue (8): 1502.

• 研究论文 • 上一篇    下一篇

金纳米颗粒的水相法合成及荧光性能

吕秉峰1, 李国平2, 罗运军2   

  1. 1. 中北大学化工与环境学院, 太原 030051;
    2. 北京理工大学材料学院, 北京 100081
  • 收稿日期:2009-11-23 出版日期:2010-08-10 发布日期:2010-08-10
  • 通讯作者: 李国平, 女, 博士, 副教授, 主要从事树形分子的合成与应用研究. E-mail: girlping3114@bit.edu.cn
  • 基金资助:

    北京理工大学基础研究基金资助项目(批准号: 20080942004)资助.

Gold Nanoparticles Prepared by Aqueous Synthesis and Its Fluorescence Properties

LÜ Bing-Feng1, LI Guo-Ping2*, LUO Yun-Jun2   

  1. 1. School of Chemical Engineering and Environment, North University of China, Taiyuan 030051, China;
    2. School of Materials, Beijing Institute of Technology, Beijing 100081, China
  • Received:2009-11-23 Online:2010-08-10 Published:2010-08-10
  • Contact: LI Guo-Ping. E-mail: girlping3114@bit.edu.cn
  • Supported by:

    北京理工大学基础研究基金资助项目(批准号: 20080942004)资助.

PDF (PC)

被引次数

10

摘要： 在水溶液中, 以PAMAM树形分子为模板, 乙醇为还原剂, 制备了树形分子包裹的金纳米颗粒, 其水溶性好, 可以稳定放置1年以上; 通过控制Au3+与PAMAM树形分子的摩尔比, 可以得到粒径可控的金纳米颗粒, 其粒径范围为1～4 nm, 分别在385和402 nm处出现强的共振瑞利光散射峰和荧光峰. 室温下, 荧光量子产率达到10%以上, 比其它文献报道的金纳米颗粒的荧光量子产率高2个数量级以上, 这一特性使其在潜指纹识别、光催化等方面具有很大的应用潜力.

关键词: PAMAM树形分子, 金纳米颗粒, 共振瑞利光散射, 荧光量子产率

Abstract: Au nanoparticles encapsulated by PAMAM dendrimers were prepared using PAMAM dendrimers as template and ethanol as reducing agent in water medium, respectively, which have good water-solubility and well-stability in water phase for more than 1 year. Au nanoparticles with controlled size in a range of 1—4 nm were obtained by changing the molar ratio of Au3+ to PAMAM dendrimers. The results show that there was a strong resonance Rayleigh scattering peak at 385 nm and a fluorescence peak at 402 nm. The photoluminescence quantum yield of the prepared Au nanoparticles was more than 10% at room temperature, which is about 2 orders of magnitude higher than that of Au nanoparticles prepared by other methods, so it have potential application prospect in fingerprint recognition, photocatalysis and so on.

Key words: PAMAM dendrimer, Au nanoparticles, Resonance Rayleigh scattering, Photoluminescence quantum yield

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