Abstract
Control of the orientation and aggregation of the chromophore in the mixed monolayers of long-chain merocyanine dyes with various matrices has been investigated. The mixed monolayers on water were characterized by measuring the surface pressure-area isotherms, and the organization of the chromophore in the transferred layers with different matrices was studied by measuring the polarized absorption spectra. As a result of the addition of hexadecane to the binary mixtures of the dye and arachidic acid or methyl arachidate, anisotropic aggregation of the chromophores in the mixed monolayers has been found to occur during the process of loss of hexadecane from the spread films under a constant surface pressure. These mixed films exhibit narrow and strong bands in the absorption and fluorescence spectra, which can be attributed to J aggregates.
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