Effect of organic polyelectrolytes on H*-aggregation of meso-methyl-substituted thiacarbocyanine dyes |
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| Authors: | A. D. Nekrasov B. I. Shapiro A. I. Tolmachev Yu. L. Slonimskii V. A. Kuzmin |
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| Affiliation: | 1.Lomonosov Moscow State Academy of Fine Chemical Technology,Moscow,Russia;2.Emanuel Institute of Biochemical Physics,Russian Academy of Sciences,Moscow,Russia;3.Institute of Organic Chemistry,National Academy of Sciences of Ukraine,Kiev,Ukraine |
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| Abstract: | H*-Aggregation of anionic meso-methyl-substituted thiacarbocyanines of different structures has been studied in dilute aqueous solutions and in the presence of cationic organic polyelectrolytes. The thermodynamic parameters of the H*-aggregation from the trans-dimers have been determined. The thermodynamic equilibrium between two forms of the H*-aggregates in the presence of poly-N,N-dimethyl-N,N-diallylammonium chloride has been observed for the first time, and these forms have been assigned to H* cis and H* trans forms. |
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