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Effect of solvent refractive index on the surface plasmon resonance nanoparticle optical absorption
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Date
2007-12-01
Author
Ertaş, Gülay
Suzer, Sefik
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This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
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Optical properties of plasmon coupled silver and gold nanoparticles were studied as a function of the refractive index of the surrounding medium. Our studies confirmed that the effect of changes in the refractive index of the surrounding medium was more difficult to demonstrate from an experimental point of view, because of the very high susceptibility of nanoparticles to aggregate in aqueous and organic solvents. Whereas the position of the absorption bands of triiodide in these solvents shows a clear dependence on medium's refractive index, the surface plasmon band position of silver and gold nanoparticles do not exhibit the same dependence. This is attributed to a non-negligible interaction of these solvents with nanoparticle surfaces.
Subject Keywords
General Materials Science
,
Bioengineering
,
General Chemistry
,
Condensed Matter Physics
,
Biomedical Engineering
URI
https://hdl.handle.net/11511/34706
Journal
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
DOI
https://doi.org/10.1166/jnn.2007.906
Collections
Department of Chemistry, Article