Journal
JOURNAL OF RAMAN SPECTROSCOPY
Volume 48, Issue 12, Pages 1799-1807Publisher
WILEY
DOI: 10.1002/jrs.5254
Keywords
diphenylalanine; nanoparticles; peptide nanotubes; self-assembly; surface-enhanced Raman scattering
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Funding
- Science Foundation Ireland [SFI12/IP/1556, SFI07/IN1/B931]
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Self-assembly offers potential routes for large-scale, rapid, and cost-effective surface-enhanced Raman scattering (SERS) substrate designs. Here, a highly sensitive SERS template is reported, which utilizes aligned diphenylalanine nanotubes to form a dense packing arrangement of plasmon-active silver nanoparticles. The template is stable under high laser illumination with a power density of 6.25MW/cm(2) in comparison to only silver nanoparticles and enables picomolar and femtomolar probe molecule concentrations to be probed, indicative of single-molecule SERS detection.
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