The goals of the project include design, syntheses, studies of packing, topological aggregation and structure-reactivity correlation in supramolecular assemblies based on the novel crown-containing hetarylphenylethenes (CHE) in the crystalline state, layers and in solution. The CHEs are ditopic receptors, which are capable of drastically changing their luminescence upon selective binding with different types. However, dyes because of their slight solubility in water and middle fluorescence intensity are required to be improved for the creation of novel types of optical sensors. During the project the attention will be focused on the search for new multicomponent systems with improved or novel characteristics in comparison with those of the initial CHE ligands. For this purpose the complexes CHE with the cyclodextrins, polynuclear complexes of CHE with transition and rare-earth metal cations, molecular assemblies of the porphyrin-containing CHE with transition metal cations and multicomponent systems based on CHE-containing thiophene oligomer samples are proposed to be synthesized and studied. The self-complementary character of the ligands controls their assembly into aggregates via intermolecular cation coordination and stacking aryl interaction. It is anticipated that the use of the suggested supramolecular assembly will allow improvement an optical sensitivity toward metal cations in comparison with that of the initial ditopic ligand, and extension of the applicability in the cation analysis. The researches are important for the creation of the cation sensitive materials for environmental, biochemical and industrial analysis.
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