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Determining the Ice-binding Planes of Antifreeze Proteins by Fluorescence-based Ice Plane Affinity
Published on: January 15, 2014
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Hidden asymmetry of ice
1Institute of the Earth Cryosphere , Siberian Branch RAS, Tyumen 625000, Russia.
The Journal of Physical Chemistry. B
|June 7, 2014
Summary
Researchers discovered a hidden asymmetry in ice structures, revealing that not all opposite hydrogen bond configurations are equivalent. This finding impacts our understanding of ice
Area of Science:
- Solid-state chemistry
- Materials science
- Physical chemistry
Background:
- Ice is a complex solid with a crucial hydrogen-bonded network.
- Understanding ice structures is fundamental to various scientific disciplines.
- Previous studies focused on tetrahedral coordination, overlooking potential asymmetries.
Purpose of the Study:
- To investigate a newly identified property: the nonequivalence of antipodal hydrogen bond configurations in ice.
- To explore this asymmetry in four-coordinated ice nanostructures, specifically bilayers and nanotubes.
- To analyze the fundamental reasons behind the observed hydrogen bonding asymmetry.
Main Methods:
- Detailed investigation of four-coordinated ice nanostructures (bilayers and nanotubes).
- Analysis of antipodal configurations with reversed hydrogen bonds.
- Examination of deviations from tetrahedral coordination and H-bond linearity.
Main Results:
- Identified an explicit nonequivalence in some antipodal hydrogen bond configurations.
- Observed that this asymmetry is most pronounced in structures deviating from tetrahedral coordination.
- Found qualitatively different patterns in hydrogen bond linearity for reversed configurations.
Conclusions:
- A fundamental asymmetry exists in the hydrogen-bonded networks of certain ice structures.
- This 'hidden' asymmetry, related to antisymmetry, challenges conventional symmetry assumptions in ice.
- The findings offer new insights into the complex nature of water ice and its nanostructures.
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