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Effect of multiply charged paramagnetic metal cations on J-aggregation of thiacyanine dyes

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Abstract

J-Aggregation of thiacyanine dyes with a different length of the polymethine chain has been studied in aqueous solutions in the presence of paramagnetic metal cations. The introduction of multiply charged metal cations stimulates J-aggregation. The number of molecules involved in the composition of J-aggregates has been calculated to be four on the basis of analysis of the absorption spectra. The equilibrium constants and the thermodynamic parameters of J-aggregation have been determined. The effect of the dye structure and the metal cation nature on J-aggregation has been revealed.

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Authors and Affiliations

  1. Moscow Lomonosov State Academy of Fine Chemical Technology, pr. Vernadskogo 86, Moscow, 119571, Russia

    A. D. Nekrasov

  2. Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, ul. Kosygina 4, Moscow, 119334, Russia

    B. I. Shapiro

Authors
  1. A. D. Nekrasov
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  2. B. I. Shapiro
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Corresponding author

Correspondence to B. I. Shapiro.

Additional information

Original Russian Text © A.D. Nekrasov, B.I. Shapiro, 2011, published in Khimiya Vysokikh Energii, 2011, Vol. 45, No. 2, pp. 162–168.

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Nekrasov, A.D., Shapiro, B.I. Effect of multiply charged paramagnetic metal cations on J-aggregation of thiacyanine dyes. High Energy Chem 45, 133–139 (2011). https://doi.org/10.1134/S001814391102010X

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  • DOI: https://doi.org/10.1134/S001814391102010X

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