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Solvation and Dissociation in Weakly Ionized Polyelectrolytes

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    Solvation and Dissociation in Weakly Ionized Polyelectrolytes†
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    Department of Physics, Kyoto University, Kyoto 606-8502, Japan
    †Part of the “PGG (Pierre-Gilles de Gennes) Memorial Issue”.
    * To whom correspondence should be addressed.
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    The Journal of Physical Chemistry B

    Cite this: J. Phys. Chem. B 2009, 113, 12, 3988–3996
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    https://doi.org/10.1021/jp809813r
    Published February 18, 2009
    Copyright © 2009 American Chemical Society
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    Abstract

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    We present a Ginzburg−Landau theory of inhomogeneous polyelectrolytes with a polar solvent. First, we take into account the molecular (solvation) interaction among the ions, the charged monomers, the uncharged monomers, and the solvent molecules, together with the electrostatic interaction with a composition-dependent dielectric constant. Second, we treat the degree of ionization as a fluctuating variable dependent on the local electric potential. With these two ingredients included, our results are as follows. (i) We derive a mass reaction law and a general expression for the surface tension. (ii) We calculate the structure factor of the composition fluctuations as a function of various parameters of the molecular interactions, which provides a general criterion of the formation of mesophases. (iii) We numerically examine some typical examples of interfaces and mesophase structures, which strongly depend on the molecular interaction parameters.

    Copyright © 2009 American Chemical Society

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    This article is cited by 19 publications.

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    The Journal of Physical Chemistry B

    Cite this: J. Phys. Chem. B 2009, 113, 12, 3988–3996
    Click to copy citationCitation copied!
    https://doi.org/10.1021/jp809813r
    Published February 18, 2009
    Copyright © 2009 American Chemical Society
    Request reuse permissions

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