表面增强拉曼光谱(SERS)是一种非常灵敏的技术,即使在复杂的样品基质中,也可以在极低浓度下检测和鉴定分子和分子结构。由于需要纳米结构的贵金属表面来增强拉曼散射,获得的光谱信息自然来源于纳米尺寸域,使其成为一种通过打破光的衍射极限的纳米光谱技术。在这次审查中,第一拉曼光谱,它与其他相关技术的比较,简要介绍了其工作模式和仪器。然后,SERS机制,讨论了影响SERS实验的衬底和参数。最后,它在制药中的应用,包括药物发现,药物代谢,多功能化学-光热-疗法-递送-释放-成像,对复杂生物样品中的药物稳定性和药物/代谢物检测进行了综述和阐述。
Surface-enhanced Raman spectroscopy (SERS) is a very sensitive technique offering unique opportunities for detection and identification of molecules and molecular structures at extremely low concentrations even in complex sample matrixes. Since a nanostructured noble metal surface is required for the enhancement of Raman scattering, the acquired spectral information naturally originates from nanometer size domains making it a nanospectroscopic technique by breaking the diffraction limit of light. In this review, first Raman spectroscopy, its comparison to other related techniques, its modes and instrumentation are briefly introduced. Then, the SERS mechanism, substrates and the parameters influencing a SERS experiment are discussed. Finally, its applications in pharmaceuticals including drug discovery, drug metabolism, multifunctional chemo-photothermal-therapy-delivery-release-imaging, drug stability and drug/metabolite detection in complex biological samples are summarized and elaborated.