Journal
APPLIED PHYSICS LETTERS
Volume 94, Issue 15, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3119642
Keywords
adsorption; aggregation; coatings; gold; monolayers; nanoparticles; organic compounds; self-assembly; surface enhanced Raman scattering
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Funding
- DFG
- Humboldt-Foundation
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Raman scattering from single gold nanostars coated with self-assembled monolayers of 4-mercaptobenzoic acid is observed. The Raman signal can be detected without the need of forming particle aggregates or resonant electronic excitation of the analyte. A total Raman enhancement factor of 10(7) for individual nanostars is estimated. These features make gold nanostars promising for Raman imaging in cells or cellular membranes.
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