Abstract
Simulation of the absorption spectra of the 2D amalgamation-type molecular aggregates consisting of two kinds of cyanine dyes is being investigated. These aggregates are modeled by the brick-stone structure in the extended dipole approximation of Kuhn et al. The simulation takes into account the vector properties of the transition dipole moment, its orientation, diagonal disorder and the composition of the aggregate. A good fit with the experiment is obtained for the dipole tilt angle θ=90°− α=30°, dipole moment μ=10 D and the disorder parameter of 750 cm −1 for various molar fractions of two dyes.
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