from the conferences organized by TANGER Ltd. provisional website
The effect of the resonance overlapping of pseudoisocyanine J aggregates exciton and plasmon of the inhomogeneous ensemble of metallic nanoparticles was studied for thin films. The absorption of a hybrid structure was not the sum of the absorption of the cyanine dye layer and nanoparticle extinction. Regardless the increase of the molecular absorption due to near field of metal nanoparticles, the spectral dip at the absorption maximum of the J aggregates was observed for hybrid films. The magnitude of the increase in absorption and the shape of the dip were different for silver and gold nanoparticles, and depend on the equivalent thickness of the metal island films. The dip was explained by the strong coupling of the exciton transition in J aggregate with the plasmon resonance of nanoparticles.Keywords: Plasmon, exciton, film, nanoparticle, J-aggregate
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