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Issue 1, 2013
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Creating, characterizing, and controlling chemistry with SERS hot spots

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Abstract

In this perspective we discuss the roles of hot spots in surface-enhanced Raman spectroscopy (SERS). After giving background and defining the hot spot, we evaluate a variety of SERS substrates which often contain hot spots. We compare and discuss the differentiating properties of each substrate. We then provide a thorough analysis of the hot spot contribution to the observed SERS signal both in ensemble-averaged and single-molecule conditions. We also enumerate rules for determining the SERS enhancement factor (EF) to clarify the use of this common metric. Finally, we present a forward-looking overview of applications and uses of hot spots for controlling chemistry on the nanoscale. Although not exhaustive, this perspective is a review of some of the most interesting and promising methodologies for creating, controlling, and using hot spots for electromagnetic amplification.

Graphical abstract: Creating, characterizing, and controlling chemistry with SERS hot spots

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Publication details

The article was received on 27 Jul 2012, accepted on 11 Sep 2012 and first published on 17 Sep 2012


Article type: Perspective
DOI: 10.1039/C2CP42598J
Phys. Chem. Chem. Phys., 2013,15, 21-36

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    Creating, characterizing, and controlling chemistry with SERS hot spots

    S. L. Kleinman, R. R. Frontiera, A. Henry, J. A. Dieringer and R. P. Van Duyne, Phys. Chem. Chem. Phys., 2013, 15, 21
    DOI: 10.1039/C2CP42598J

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