Journal
CHEMICAL COMMUNICATIONS
Volume 48, Issue 75, Pages 9346-9348Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2cc34068b
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Funding
- Lawrence Livermore National Labs [URP-06-019]
- NSF [DMR-0097611]
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The bottom-up optimization of signal-to-noise ratios for SERS tags employing SAMSA fluorescein as the reporter was achieved using a bifunctional linker with low Raman cross section. By holding the nanoparticles at subnanometer separation, the linker allowed us to optimize the hot-spot thereby significantly reducing the fluorescence background.
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