Plasmon-enhanced fluorescence spectroscopy,Chemical Society Reviews

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Plasmon-enhanced fluorescence spectroscopy
Chemical Society Reviews ( IF 40.4 ) Pub Date : 2017-06-22 00:00:00 , DOI: 10.1039/c7cs00169j
Jian-Feng Li _{1,

2,

3,

4,

5} , Chao-Yu Li _{1,

2,

3,

4,

5} , Ricardo F. Aroca _{6,

7,

8,

9,

10}

Affiliation

Fluorescence spectroscopy with strong emitters is a remarkable tool with ultra-high sensitivity for detection and imaging down to the single-molecule level. Plasmon-enhanced fluorescence (PEF) not only offers enhanced emissions and decreased lifetimes, but also allows an expansion of the field of fluorescence by incorporating weak quantum emitters, avoiding photobleaching and providing the opportunity of imaging with resolutions significantly better than the diffraction limit. It also opens the window to a new class of photostable probes by combining metal nanostructures and quantum emitters. In particular, the shell-isolated nanostructure-enhanced fluorescence, an innovative new mode for plasmon-enhanced surface analysis, is included. These new developments are based on the coupling of the fluorophores in their excited states with localized surface plasmons in nanoparticles, where local field enhancement leads to improved brightness of molecular emission and higher detection sensitivity. Here, we review the recent progress in PEF with an emphasis on the mechanism of plasmon enhancement, substrate preparation, and some advanced applications, including an outlook on PEF with high time- and spatially resolved properties.

中文翻译：

等离子体增强荧光光谱

具有强发射体的荧光光谱法是一种出色的工具，具有超高灵敏度，可检测和成像至单分子水平。等离子体增强荧光（PEF）不仅提供了增强的发射并缩短了寿命，而且通过引入弱的量子发射器，避免了光致漂白并提供了显着优于衍射极限的分辨率成像的机会，从而扩大了荧光场。通过结合金属纳米结构和量子发射器，也为新型光稳定探针打开了窗口。特别是，包括了壳隔离的纳米结构增强的荧光，这是一种用于等离子体激元增强的表面分析的创新新模式。这些新的发展是基于处于激发态的荧光团与纳米颗粒中的局部表面等离激元的耦合，其中局部场增强导致分子发射的亮度提高和检测灵敏度更高。在这里，我们回顾了PEF的最新进展，重点是等离激元增强机理，底物制备以及一些高级应用，包括对具有高时间和空间分辨特性的PEF的展望。

更新日期：2017-07-03

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