Chulhai Dhabih V, Hu Zhongwei, Moore Justin E, Chen Xing, Jensen Lasse
Department of Chemistry, Pennsylvania State University, University Park, Pennsylvania 16802; email:
Annu Rev Phys Chem. 2016 May 27;67:541-64. doi: 10.1146/annurev-physchem-040215-112347. Epub 2016 Apr 18.
The vibrational spectroscopy of molecules adsorbed on metal nanoparticles can be enhanced by many orders of magnitude so that the detection and identification of single molecules are possible. The enhancement of most linear and nonlinear vibrational spectroscopies has been demonstrated. In this review, we discuss theoretical approaches to understanding linear and nonlinear surface-enhanced vibrational spectroscopies. A unified description of enhancement mechanisms classified as either electromagnetic or chemical in nature is presented. Emphasis is placed on understanding the spectral changes necessary for interpretation of linear and nonlinear surface-enhanced vibrational spectroscopies.
吸附在金属纳米颗粒上的分子的振动光谱可以增强许多个数量级，从而使单分子的检测和识别成为可能。大多数线性和非线性振动光谱的增强都已得到证实。在这篇综述中，我们讨论了理解线性和非线性表面增强振动光谱的理论方法。本文提出了对本质上分为电磁或化学增强机制的统一描述。重点在于理解解释线性和非线性表面增强振动光谱所需的光谱变化。
