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首页> 外文期刊>Optical and quantum electronics >Improved properties of gold nanorods coated with thin multilayer of small organic molecules by fast and facile method for surface enhanced Raman scattering
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Improved properties of gold nanorods coated with thin multilayer of small organic molecules by fast and facile method for surface enhanced Raman scattering

机译：通过快速简便的方法改进表面增强拉曼散射的金纳米棒的性能

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摘要

We introduce a thin multilayer-shell-coated gold nanorods (GNRs) that we have been able to achieve by way of coating them with two thin layers of small organic molecules in a new, efficient, effective, time-saving, and easy-to-control multilayer coating method. Compared to the thick shell, due to the small size of the coating molecules, this new type of GNR, by simply mixed with the sample solution, has shown that it can act as a highly effective and improved surface enhanced Raman scattering (SERS) enhancement agent without the need of any sample connecting or doping. This enhancement is found not only related to the off-resonance surface enhancement, but also to the increased signal-to-noise ratio brought by the low level of fluorescence emission. It showed excellent stability in strong acids, bases and some organic solvents as examined by comparing the longitudinal surface plasmon resonance peak values. A living body experiment on a tumor-bearing nude mouse injected with the Raman reporter dye loaded onto our new GNRs showed strong surface enhanced Raman scattering signal in the tumor, suggesting its high potential use in many related optical applications.
机译：我们介绍了一种薄的多层壳包被的金纳米棒（GNR），我们可以通过在两层有机小分子薄层上以新颖，高效，有效，省时且易于操作的方式对其进行包覆来实现-控制多层涂覆方法。与厚壳相比，由于涂层分子的尺寸小，这种新型GNR通过与样品溶液简单混合即可显示，它可以起到高效和改进的表面增强拉曼散射（SERS）增强作用剂，无需任何样品连接或掺杂。发现这种增强不仅与共振表面的增强有关，而且与低水平的荧光发射带来的信噪比提高有关。通过比较纵向表面等离子体激元共振峰值，可以看出它在强酸，碱和某些有机溶剂中显示出极好的稳定性。在载有我们新GNR的拉曼报道染料注射的荷瘤裸鼠上进行的活体实验显示，该表面在肿瘤中具有很强的表面增强拉曼散射信号，表明其在许多相关的光学应用中具有很高的潜在用途。

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  • 来源
    《Optical and quantum electronics》 |2015年第8期|2759-2766|共8页
  • 作者

    Yuan Zhang; Xianhe Sun; Wen Liu; El-Hang Lee; Sailing He;

  • 作者单位

    Centre for Optical and Electromagnetic Research, JORCEP [Joint Research Center of Photonics of the Royal Institute of Technology (Sweden), Lund University (Sweden), and Zhejiang University], Zhejiang University, Hangzhou 310058, China;

    Centre for Optical and Electromagnetic Research, JORCEP [Joint Research Center of Photonics of the Royal Institute of Technology (Sweden), Lund University (Sweden), and Zhejiang University], Zhejiang University, Hangzhou 310058, China;

    Centre for Optical and Electromagnetic Research, JORCEP [Joint Research Center of Photonics of the Royal Institute of Technology (Sweden), Lund University (Sweden), and Zhejiang University], Zhejiang University, Hangzhou 310058, China;

    Centre for Optical and Electromagnetic Research, JORCEP [Joint Research Center of Photonics of the Royal Institute of Technology (Sweden), Lund University (Sweden), and Zhejiang University], Zhejiang University, Hangzhou 310058, China;

    Centre for Optical and Electromagnetic Research, JORCEP [Joint Research Center of Photonics of the Royal Institute of Technology (Sweden), Lund University (Sweden), and Zhejiang University], Zhejiang University, Hangzhou 310058, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Surface enhanced Raman scattering; Gold nanorods; Surface plasmon resonance; Multilayer; Tumor; Fluorescence quench;

    机译：表面增强拉曼散射;金纳米棒;表面等离子体共振;多层瘤;荧光猝灭;

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