Raman of indigo on a silver surface. Raman and theoretical characterization of indigo deposited on silicon dioxide-coated and uncoated silver nanoparticles
| Autor: | José J. Cárcamo-Vega, Juan S. Gómez-Jeria, Marcelo Campos, Guillermo Corales, Freddy Celis |
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| Rok vydání: | 2017 |
| Předmět: |
inorganic chemicals
Silicon Silicon dioxide Inorganic chemistry Physics::Optics chemistry.chemical_element Nanoparticle 02 engineering and technology 010402 general chemistry 01 natural sciences Indigo Silver nanoparticle Analytical Chemistry Metal chemistry.chemical_compound symbols.namesake Physics::Atomic and Molecular Clusters Spectroscopy Chemistry technology industry and agriculture 021001 nanoscience & nanotechnology Atomic and Molecular Physics and Optics 0104 chemical sciences Chemical engineering visual_art visual_art.visual_art_medium symbols 0210 nano-technology Raman spectroscopy Raman scattering |
| Zdroj: | Spectroscopy Letters. 50:316-321 |
| ISSN: | 1532-2289 0038-7010 |
| DOI: | 10.1080/00387010.2017.1324493 |
| Popis: | Raman, surface-enhanced Raman scattering, and shell isolated nanoparticles-enhanced Raman scattering techniques were used to study the indigo–nanoparticle interaction nature. Silver nanoparticles were employed with and without a silicon dioxide spacer inert layer. The SERS spectral profile, obtained using silver nanoparticles, is different from the Raman one, which led to the proposition that the indigo–silver interaction is in the range of intermolecular interactions. SERS spectral reproducibility suggests identical organization and orientation of the analyte on the metal surface. The shell isolated nanoparticles enhanced Raman scattering spectrum of indigo, obtained by using silicon dioxide coated silver nanoparticles resulted similar to its Raman spectrum. This result indicates that the indigo structure is chemically unmodified by the silicon dioxide-coated silver surface. From the shell-isolated nanoparticles-enhanced Raman scattering experiments, the electromagnetic mechanism is proposed as t... |
| Databáze: | OpenAIRE |
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