Theory of optical coupling effects among surfactant Au nanoparticles films
- Muñetón Arboleda, David
- Lester, Marcelo Fabian
- Dalfovo, Maria Celeste
- Skigin, Diana Carina
- Inchaussandague, Marina Elizabeth
- Ibañez, Francisco Javier
DOIAbstract
In previous reports, Dalfovo et al. showed experimentally that thin films of Au nanoparticles (NP) with organic coating change their optical properties when exposed to several analytes in the vapor phase (Anal Chem 84:4886–4892 2012; J Phys Chem C 119:5098–5106 2015). This optical behavior was associated with changes in the mean distance between nanoparticles, which resulted in a displacement of their plasmon bands towards blue or red in the presence of toluene (Tol) or ethanol (EtOH) vapors, respectively. In the report by Dalfovo et al. (J Phys Chem C 119:5098–5106 2015), in-situ grazing-incidence small-angle X-ray spectroscopy (GISAXS) was performed to determine changes in the inter-NP distance within the film. In the present work, we per...
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