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Solvation dynamics and proton transfer in supramolecular assemblies.

Kankan Bhattacharyya1

  • 1Department of Physical Chemistry, Indian Association for the Cultivation of Science, Kolkata 700 032, India.

Accounts of Chemical Research
|February 19, 2003
PubMed
Summary

Confined water molecules in supramolecular assemblies exhibit ultraslow solvation, significantly slowing polar reactions. This phenomenon impacts biological systems and natural processes due to disrupted water networks and macromolecule binding.

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Area of Science:

  • Biophysics
  • Physical Chemistry
  • Supramolecular Chemistry

Background:

  • Water's role in biological systems is crucial.
  • Solvation dynamics influence chemical reactions and molecular interactions.
  • Supramolecular assemblies create unique microenvironments.

Purpose of the Study:

  • To investigate the behavior of water molecules confined within supramolecular assemblies.
  • To understand how confined water affects solvation dynamics and reactivity.
  • To explore the implications for biological and natural processes.

Main Methods:

  • Analysis of ultraslow solvation components in confined water.
  • Investigation of hydrogen-bond network disruption.
  • Examination of water molecule binding to macromolecules.

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Main Results:

  • Confined water exhibits ultraslow solvation (2-4 orders of magnitude slower than bulk water).
  • Ultraslow solvation is attributed to hydrogen-bond network disruption and macromolecule binding.
  • Polar reactions are significantly retarded by this ultraslow solvation component.

Conclusions:

  • Confinement dramatically alters water's dynamic and reactive properties.
  • Understanding confined water dynamics is key to comprehending biological and natural phenomena.
  • Supramolecular assemblies offer a platform to control reactivity through water confinement.