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|title: ||Shaping gold nanocomposites with tunable optical properties|
|authors: ||Martins, Manuel A.|
Girao, Ana V.
Pereira, Sergio S.
|issue date: ||2010|
|publisher: ||American Chemical Society|
|abstract: ||We report the synthesis of morphological uniform composites using miniemulsions of poly(tert-butyl acrylate) or
poly(styrene) containing organically capped gold nanocrystals (NCs). The optical features of such hybrid structures are
dominated by plasmonic effects and depend critically on the morphology of the resulting nanocomposite. In particular,
we demonstrate the ability to tune the overall optical response in the visible spectral region by varying the Au NCs
arrangement within the polymer matrix, and therefore the interparticle plasmon coupling, using Au NCs resulting from
the same batch of synthesis. This is a consequence of two well-known effects on the optical properties of Au particles: the
variation of the surrounding dielectric refractive index and interparticle plasmonic coupling. The research reported here
shows a general strategy to produce optical responsive nanocomposites via control of the morphology of submicrometric
polymer particles containing metal nanocrystals and thus is an alternative to the more common strategy of size
tuning metal nanoparticles used as nanofillers.|
|publisher version/DOI: ||dx.doi.org/10.1021/la100875j|
|appears in collections||DQ - Artigos|
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