Super-Resolution SERS Imaging beyond the Single-Molecule Limit: An Isotope-Edited Approach
Authors:
- 14 September 2012
- journal article
- letter
- Published by American Chemical Society (ACS) in Nano Letters
- Vol. 12 (10) , 5103-5110
Abstract
Super-resolution imaging of single-molecule surface-enhanced Raman scattering (SM-SERS) reveals a spatial relationship between the SERS emission centroid and the corresponding intensity. Here, an isotope-edited bianalyte approach is used to confirm that shifts in the SERS emission centroid are directly linked to the changing position of the molecule on the nanoparticle surface. By working above the single-molecule limit and exploiting SERS intensity fluctuations, the SERS centroid positions of individual molecules are found to be spatially distinct.Keywords
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