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A Comparative Study of Metachromasy Induced by Anionic Polelectroytes in Toluidine Blue

Received: 13 February 2017     Accepted: 15 February 2017     Published: 6 March 2017
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Abstract

The interaction of two anionic polyelectrolytes, namely, sodium alginate (NaAlg) & sodium heparin ate (NaHep) with a cationic dye Toluidine Blue (TB) has been investigated by spectrophotometric method. The polymers induced metachromasy in the dyes resulting in the shift of the absorption maxima of the dyes towards shorter wavelengths. The stability of the complexes formed between TB and sodiumalginate was found to be lesser than that formed between TB and sodiumheparinate. This fact was further confirmed by reversal studies using alcohols, urea and electrolytes. The interaction parameters revealed that binding between TB and anionic polyelectrolytes was mainly due to electrostatic interaction andhydrophobicforces. The effect of the temperature on to metachromasy has beendiscussed.

Published in Science Journal of Chemistry (Volume 5, Issue 4-1)

This article belongs to the Special Issue Polyelectrolyte-Dye Interaction

DOI 10.11648/j.sjc.s.2017050401.11
Page(s) 1-7
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2017. Published by Science Publishing Group

Keywords

Cationic Dye, Metachromasy, Polyelectrolyte’s, Aggregation, Temperature

References
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    Nandini R., Vishalakshi B. (2017). A Comparative Study of Metachromasy Induced by Anionic Polelectroytes in Toluidine Blue. Science Journal of Chemistry, 5(4-1), 1-7. https://doi.org/10.11648/j.sjc.s.2017050401.11

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    ACS Style

    Nandini R.; Vishalakshi B. A Comparative Study of Metachromasy Induced by Anionic Polelectroytes in Toluidine Blue. Sci. J. Chem. 2017, 5(4-1), 1-7. doi: 10.11648/j.sjc.s.2017050401.11

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    AMA Style

    Nandini R., Vishalakshi B. A Comparative Study of Metachromasy Induced by Anionic Polelectroytes in Toluidine Blue. Sci J Chem. 2017;5(4-1):1-7. doi: 10.11648/j.sjc.s.2017050401.11

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  • @article{10.11648/j.sjc.s.2017050401.11,
      author = {Nandini R. and Vishalakshi B.},
      title = {A Comparative Study of Metachromasy Induced by Anionic Polelectroytes in Toluidine Blue},
      journal = {Science Journal of Chemistry},
      volume = {5},
      number = {4-1},
      pages = {1-7},
      doi = {10.11648/j.sjc.s.2017050401.11},
      url = {https://doi.org/10.11648/j.sjc.s.2017050401.11},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.sjc.s.2017050401.11},
      abstract = {The interaction of two anionic polyelectrolytes, namely, sodium alginate (NaAlg) & sodium heparin ate (NaHep) with a cationic dye Toluidine Blue (TB) has been investigated by spectrophotometric method. The polymers induced metachromasy in the dyes resulting in the shift of the absorption maxima of the dyes towards shorter wavelengths. The stability of the complexes formed between TB and sodiumalginate was found to be lesser than that formed between TB and sodiumheparinate. This fact was further confirmed by reversal studies using alcohols, urea and electrolytes. The interaction parameters revealed that binding between TB and anionic polyelectrolytes was mainly due to electrostatic interaction andhydrophobicforces. The effect of the temperature on to metachromasy has beendiscussed.},
     year = {2017}
    }
    

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    T1  - A Comparative Study of Metachromasy Induced by Anionic Polelectroytes in Toluidine Blue
    AU  - Nandini R.
    AU  - Vishalakshi B.
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    DO  - 10.11648/j.sjc.s.2017050401.11
    T2  - Science Journal of Chemistry
    JF  - Science Journal of Chemistry
    JO  - Science Journal of Chemistry
    SP  - 1
    EP  - 7
    PB  - Science Publishing Group
    SN  - 2330-099X
    UR  - https://doi.org/10.11648/j.sjc.s.2017050401.11
    AB  - The interaction of two anionic polyelectrolytes, namely, sodium alginate (NaAlg) & sodium heparin ate (NaHep) with a cationic dye Toluidine Blue (TB) has been investigated by spectrophotometric method. The polymers induced metachromasy in the dyes resulting in the shift of the absorption maxima of the dyes towards shorter wavelengths. The stability of the complexes formed between TB and sodiumalginate was found to be lesser than that formed between TB and sodiumheparinate. This fact was further confirmed by reversal studies using alcohols, urea and electrolytes. The interaction parameters revealed that binding between TB and anionic polyelectrolytes was mainly due to electrostatic interaction andhydrophobicforces. The effect of the temperature on to metachromasy has beendiscussed.
    VL  - 5
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Author Information
  • Dept. of Chemistry, MITE, Moodbidri, India

  • Dept. of Chemistry, MITE, Moodbidri, India

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