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Collective proton transport with weak proton-proton coupling

Zolotaryuk1, Peyrard, Spatschek

  • 1Bogolyubov Institute for Theoretical Physics, 03143 Kiev, Ukraine.

Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics
|November 23, 2000
PubMed
Summary
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This study proposes a new mechanism for fast proton transfer in hydrogen-bonded chains, utilizing a two-sublattice model. The model reveals that solitons, acting as both topological and dynamical entities, can propagate freely along the chain.

Area of Science:

  • Physical Chemistry
  • Condensed Matter Physics
  • Biophysics

Background:

  • Proton transfer is crucial in many chemical and biological processes.
  • Understanding the dynamics of proton movement in hydrogen-bonded systems is complex.
  • Realistic interactions between protons can influence transfer mechanisms.

Purpose of the Study:

  • To propose a novel mechanism for fast proton transfer in hydrogen-bonded chains.
  • To investigate the role of weak intersite proton-proton interactions.
  • To model proton dynamics using a simplified yet effective theoretical framework.

Main Methods:

  • Development of a two-sublattice model for hydrogen-bonded chains.
  • Analytical study of the model to identify key dynamical properties.

Related Experiment Videos

  • Investigation of soliton solutions within the proposed model.

    • Main Results:

    • A mechanism based on hydrogen bond dynamics is proposed for fast proton transfer.
    • The two-sublattice model yields an exact soliton solution.
    • These solitons exhibit characteristics of both topological objects and dynamical entities, enabling free propagation.

    Conclusions:

    • The suggested mechanism accurately describes fast proton transfers in realistic hydrogen-bonded chains.
    • Solitons are identified as key carriers of proton transfer, with properties allowing for efficient movement.
    • The findings offer insights into proton dynamics in condensed matter and biological systems.