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Results on microscopic reflection imaging and spectroscopy of J-aggregates of pseudoisocyanine dyes in thin film matrices of polyvinyl sulfate, polyvinyl alcohol and polystyrene are reported. Despite different aggregation mechanisms in the three polymers, reflection images show formation of similar, highly reflecting fiber-like nanostructures in all samples. Local reflectance spectra reveal large...
Simultaneous atomic force microscope and reflection micro-spectroscopic study of nanostructures of pseudoisocyanine J-aggregates shows morphology related variety of optical properties in the form of exciton- and polariton-like reflectance spectra. Modulation of the polarization state of incident light is used to study locally the absolute orientations of exciton transition dipole moments. The lowest...
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