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Water-Soluble Polymeric Heteroligand Europium Complexes

  • Macromolecular Compounds and Polymeric Materials
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Abstract

Water-soluble polymeric complexones, N-vinylpyrrolidone-N-allyl-p-aminosalicylic acid copolymers with low content of chelating units, were synthesized. The formation of Eu3+ heteroligand complexes containing these complexones was studied. The complexation of Eu3+ with the polymeric complexone and low-molecular-mass organic coligand, thenoyltrifluoroacetone (TTA), ensures efficient energy transfer from molecular orbitals of the polymeric ligand to Eu3+, allowing the Eu3+ luminescence intensity in aqueous solutions to be enhanced by more than 1–1.5 orders of magnitude. The maximal intensity of the Eu3+ luminescence in the heteroligand complex is observed at the [Eu3+]:[COO−] ratio of ∼1 and [Eu3+]/[TTA] = 1.2−1.5. In the presence of univalent metal salts, the Eu3+ luminescence intensity does not noticeably change up to their concentration of 0.4 M. Addition of Ca2+ or Mg2+ salts leads to a drastic decrease in the Eu3+ luminescence intensity in the solution.

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Funding

The study was financially supported by the Russian Science Foundation, project no. 18-13-00324.

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Authors and Affiliations

  1. Institute of Macromolecular Compounds, Russian Academy of Sciences, St. Petersburg, 199004, Russia

    T. N. Nekrasova, N. A. Nesterova, I. I. Gavrilova & E. F. Panarin

  2. Peter the Great Polytechnic University, St. Petersburg, 195251, Russia

    E. F. Panarin

Authors
  1. T. N. Nekrasova
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  2. N. A. Nesterova
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  3. I. I. Gavrilova
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  4. V. D. Pautov
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  5. E. F. Panarin
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Corresponding author

Correspondence to T. N. Nekrasova.

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E.F. Panarin is Deputy Editor-in-Chief of Zhurnal Prikladnoi Khimii/Russian Journal of Applied Chemistry; the other authors have no conflict of interest.

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Russian Text © The Author(s), 2019, published in Zhurnal Prikladnoi Khimii, 2019, Vol. 92, No. 10, pp. 1238–1243.

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Nekrasova, T.N., Nesterova, N.A., Gavrilova, I.I. et al. Water-Soluble Polymeric Heteroligand Europium Complexes. Russ J Appl Chem 92, 1336–1341 (2019). https://doi.org/10.1134/S1070427219100021

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  • DOI: https://doi.org/10.1134/S1070427219100021

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