Abstract
The spectral-luminescent properties of rhodamine 6G on addition of lithium iodide to the solutions were studied in mixtures of polar (isopropanol) and nonpolar (carbon tetrachloride) solvents. It was found that when LiI is added, the complex associates of the dye molecules formed in solutions containing more than 90 vol. % of CCl4 dissociate into rhodamine 6G monomers. The enthalpy of association of rhodamine depends on the concentration of the salt in the system. The volume and the geometry of the complexes have been evaluated from the data of the polarization characteristics of the fluorescence of the associates.
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Translated from Teoreticheskaya i Éksperimental'naya Khimiya, Vol. 23, No. 3, pp. 368–372, May–June, 1987.
The authors wish to express their gratitudes to Associate Professor B. M. Uzhinov for his participation in the discussion of the results.
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Saletskii, A.M., Shekunov, V.A. & Yuzhakov, V.I. Influence of lithium iodide on association of rhodamine 6G molecules in mixtures of isopropanol with CCl4 . Theor Exp Chem 23, 342–346 (1987). https://doi.org/10.1007/BF00531392
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DOI: https://doi.org/10.1007/BF00531392