Abstract

Gold nanostructures are widely studied because they present exceptional properties that make them suitable for a wide variety of applications. In particular, their ability to focus and confine optical energy in regions smaller than the wavelength size, make them ideal to develop light-harvesting devices [1]. The coupling of these structures with J-aggregates pursues to take advantage of their Frenkel exciton. This kind of macromolecule presents a red-shifted and narrowed absorption band, and the monomeric species have a high extinction and polarizability [2]. The quasiparticles involved in the strong coupling process are known as plexcitons: they are defined as the combination of plasmons and excitons, and their interaction triggers in hybrid states’ formation of light-matter [3].

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