| 表面增强荧光研究进展 |
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| 引用本文： | 吕凤婷,郑海荣,房喻.表面增强荧光研究进展[J].化学进展,2007(Z1). |
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| 作者姓名： | 吕凤婷 郑海荣 房喻 |
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| 作者单位： | 陕西师范大学化学与材料科学学院大分子科学陕西省重点实验室 西安710062(吕凤婷，房喻)，陕西师范大学物理学与信息技术学院 西安710062(郑海荣) |
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| 基金项目： | 国家自然科学基金项目(No.20373039,20543002)，教育部项目(No.20040718001,306015)资助 |
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| 摘 要： | 本文系统地介绍了金属表面增强荧光现象、产生机理及其应用。粗糙金属和超薄光滑金属表面均可表现出荧光增强效应,但这两种表面增强荧光产生的机理不同,所发出的荧光性质也不同。粗糙金属表面增强荧光的主要原因被认为是加快了处于基质表面附近的荧光物种的辐射衰减过程,而超薄光滑金属表面增强荧光则是激发态荧光物种与金属表面的等离子体耦合共振的结果。与粗糙金属表面增强荧光不同,超薄光滑金属表面增强荧光具有突出的方向性。金属表面增强荧光已经开始在DNA无损检测、荧光共振能量转移免疫分析等领域获得重要应用。
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| 关 键 词： | 金属增强荧光 辐射衰减工程 辐射等离子体模型 表面等离子体耦合发射 |
Studies of Surface-Enhanced Fluorescence |
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| Abstract: | The phenomenon,mechanisms and applications of metallic surface-enhanced fluorescence are reviewed.The phenomenon of enhanced fluorescence emission can be observed on both a non-continuous metallic surface and a continuous metallic surface.But the nature of the enhancement is different.The presence of a non-continuous metallic surface can have dramatic effects on the radiative decay rate of a nearby fluorophore.Above a continuous metallic surface,however,excited fluorophores can couple with surface plasmons,and result in enhanced fluorescence.Compared with the emission near a non-continuous metallic surface,the emission near a continuous metallic surface is highly directional.Furthermore,surface-enhanced fluorescence has found useful in DNA assays,and FRET-based immunoassays. |
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| Keywords: | metal enhanced fluorescence radiative decay engineering radiating plasmons model surface plasmon-coupled emission |
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