DOI: 10.1126/science.256.5058.815. The Role of Crystal Polarity in α-Amino Acid Crystals for Induced Nucleation of Ice

The Role of Crystal Polarity in α-Amino Acid Crystals for Induced Nucleation of Ice

10.1126/science.256.5058.815

Crossref journal-article

American Association for the Advancement of Science (AAAS)

Science (221)

Abstract

The hydrophobic faces of single crystals of a series of pairs of racemic and chiral-resolved hydrophobic α-amino acids were used as a substrate, onto which water vapor has been cooled to freezing. The morphologies and molecular packing arrangements within each crystal pair are similar but only one of each pair exhibits a polar axis, parallel to the hydrophobic face exposed to water. Those crystals that have a polar axis induce a freezing point higher by 4° to 5°C than the corresponding crystals that do not have a polar axis. The results are interpreted in terms of an electric field mechanism that helps align the water molecules into ice-like clusters en route to crystallization.

Bibliography

Gavish, M., Wang, J.-L., Eisenstein, M., Lahav, M., & Leiserowitz, L. (1992). The Role of Crystal Polarity in Î±-Amino Acid Crystals for Induced Nucleation of Ice. Science, 256(5058), 815â818.

Authors 5

M. Gavish (first)
J.-L. Wang (additional)
M. Eisenstein (additional)
M. Lahav (additional)
L. Leiserowitz (additional)

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Dates

Type	When
Created	3 years, 10 months ago (Oct. 10, 2021, 9:58 a.m.)
Deposited	1 year, 7 months ago (Jan. 12, 2024, 6:33 p.m.)
Indexed	4 months, 3 weeks ago (April 9, 2025, 1:36 p.m.)
Issued	33 years, 3 months ago (May 8, 1992)
Published	33 years, 3 months ago (May 8, 1992)
Published Print	33 years, 3 months ago (May 8, 1992)

Funders 0

None

BibTeX

@article{Gavish_1992, title={The Role of Crystal Polarity in α-Amino Acid Crystals for Induced Nucleation of Ice}, volume={256}, ISSN={1095-9203}, url={http://dx.doi.org/10.1126/science.256.5058.815}, DOI={10.1126/science.256.5058.815}, number={5058}, journal={Science}, publisher={American Association for the Advancement of Science (AAAS)}, author={Gavish, M. and Wang, J.-L. and Eisenstein, M. and Lahav, M. and Leiserowitz, L.}, year={1992}, month=may, pages={815–818} }

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