Statistics of single-molecule surface enhanced Raman scattering signals: Fluctuation analysis with multiple analyte techniques

被引:121
作者
Etchegoin, P. G. [1 ]
Meyer, M. [1 ]
Blackie, E. [1 ]
Le Ru, E. C. [1 ]
机构
[1] Victoria Univ Wellington, Sch Chem & Phys Sci, MacDiarmid Inst Adv Mat & Nanotechnol, Wellington, New Zealand
关键词
D O I
10.1021/ac071231s
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
The mathematical background, based on a variation of the principal component analysis (PCA) method, is developed for the understanding of fluctuating multiple analyte single-molecule (SM) surface enhanced Raman scattering (SERS) signals; with emphasis on the bianalyte SERS technique developed recently. The method and its significance are presented to provide a systematic framework with which several aspects of the statistics of SM-SERS signals can be analyzed in general. We also apply the method to a concrete example of bianalyte statistics in silver colloidal solutions and discuss related topics around experimental issues and the interpretation of single-molecule SERS data.
引用
收藏
页码:8411 / 8415
页数:5
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