A Statistical Criterion for Evaluating the Single-Molecule Character of SERS Signals

被引：21

作者：

Bohn, Johanna E. ^{[1
]}

Le Ru, Eric C. ^{[1
]}

Etchegoin, Pablo G. ^{[1
]}

机构：

[1] Victoria Univ Wellington, Sch Chem & Phys Sci, MacDiarmid Inst Adv Mat & Nanotechnol, Wellington, New Zealand

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2010年 / 114卷 / 16期

关键词：

SURFACE-ENHANCED RAMAN; SCATTERING; PROOF;

D O I：

10.1021/jp908990v

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A method based on the study of the statistical characteristics of SERS signals is proposed to identify regimes in which most or the spectra are primarily single-molecule in nature. Once this regime is identified, the signals can be taken (with some statistical confidence) to represent single-molecule spectra and can be used to infer properties of the substrate (including its single-molecule SERS enhancement factor distribution) that would be otherwise washed out by ensemble-averaging. The method proposed here extends and complements the bianalyte SERS technique to situations in which a suitable "partner" molecule night be difficult to find or synthesize. Specific examples of the method are shown, and its advantages and limitations are discussed.

引用

收藏

页码：7330 / 7335

页数：6

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