纳米材料在表面增强拉曼光谱技术中的应用

A review of applications of nanomaterials in surface enhanced raman spectroscpy

表面增强拉曼散射(surface enhanced Raman scattering,SERS)的产生条件是目标分子被吸附在具有粗糙纳米结构表面的金属基底上,通过激发光能量的激发而产生等离子共振相互作用引起的拉曼光谱强度增加的现象。作为一种高灵敏度、稳定性高、实验重复性高且痕量快速无损的表界面性能和分子之间相互作用的检测光谱手段,其广泛应用生物医药的检测和环境污染物的分析等领域。该文归纳总结了SERS衬底制备近年来比较常用的四种方法,同时阐述了SERS机理的探索历程。

The condition of surface enhanced Raman scattering is the phenomenon of Raman spectral intensity increase caused by plasmon resonance interaction through excitation of light energy by the target molecules adsorbed on the metal substrate with rough nano-structure surface.As a spectral method with high sensitivity,high stability,high experimental repeatability and rapid trace nondestructive detection of surface interface properties and molecular interactions,it is widely used in biomedical detection and analysis of environmental pollutants.This paper summarized four methods commonly used for preparing SERS substrate in recent years,and expounded the exploration process of SERS mechanism.