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We have developed a model in order to account for electron-vibrationaleffects on absorption, luminescence of molecular aggregates andexciton-polaritons in nanofibers. The model generalizes the mean-fieldelectron-vibrational theory developed by us earlier to the systems with spatialsymmetry, exciton luminescence and the exciton-polaritons with spatialdispersion. The correspondence between manifestation of electron-vibrationalinteraction in monomers, molecular aggregates and exciton-polariton dispersionin nanofibers is obtained by introducing the aggregate line-shape functions interms of the monomer line-shape functions. With the same description ofmaterial parameters we have calculated both the absorption and luminescence ofmolecular aggregates and the exciton-polariton dispersion in nanofibers. Weapply the theory to experiment on fraction of a millimeter propagation ofFrenkel exciton polaritons in photoexcited organic nanofibers made ofthiacyanine dye.

journal of physical chemistry. c./journal of physical chemistry. c

Study of Electron-Vibrational Interaction in Molecular Aggregates Using  Mean-Field Theory: From Exciton Absorption and Luminescence to  Exciton-Polariton Dispersion in Nanofibers