Surface-Enhanced Nonresonance Raman Scattering from Size- and Morphology-Controlled Gold Nanoparticle Films
| Autor: | Yasuro Niidome, Sunao Yamada, Mototsugu Suzuki, Nao Terasaki, Kazuma Inoue, Yutaka Kuwahara |
|---|---|
| Rok vydání: | 2004 |
| Předmět: |
Coalescence (physics)
Morphology (linguistics) Materials science Nanoparticle Nanotechnology Surfaces Coatings and Films Rhodamine 6G chemistry.chemical_compound Colloid symbols.namesake chemistry Chemical engineering Colloidal gold Materials Chemistry symbols Physical and Theoretical Chemistry Raman scattering |
| Zdroj: | The Journal of Physical Chemistry B. 108:11660-11665 |
| ISSN: | 1520-5207 1520-6106 |
| DOI: | 10.1021/jp0490150 |
| Popis: | Gold nanoparticle films with different particles sizes (35 ± 5, 15 ± 1 nm) and agglomerated states were prepared on glass substrates, by salting-out the colloidal solutions with NaClO4 or NaOH. An ethanol solution of rhodamine 6G was cast on the gold nanoparticle film and the surface-enhanced Raman scattering (SERS) spectrum was measured. We found that the intensity of the SERS signal was higher for the film with larger particles and that the film prepared from NaClO4 gave higher SERS signals than that prepared from NaOH. Considerable coalescence of larger gold nanoparticles was quite effective for obtaining larger SERS signals. The SERS enhancement factor was estimated to be ∼108 for the film prepared from NaClO4. |
| Databáze: | OpenAIRE |
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