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  The role of structural order in heterogeneous ice nucleation

Sosso, G. C., Sudera, P., Backes, A. T., Whale, T. F., Fröhlich-Nowoisky, J., Bonn, M., et al. (2022). The role of structural order in heterogeneous ice nucleation. Chemical Science. doi:10.1039/d1sc06338c.

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Genre: Journal Article

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 Creators:
Sosso, Gabriele C.1, Author
Sudera, Prerna1, Author
Backes, Anna T.2, Author              
Whale, Thomas F.1, Author
Fröhlich-Nowoisky, Janine2, Author              
Bonn, Mischa1, Author
Michaelides, Angelos1, Author
Backus, Ellen H. G.1, Author
Affiliations:
1external, ou_persistent22              
2Multiphase Chemistry, Max Planck Institute for Chemistry, Max Planck Society, ou_1826290              

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 Abstract: The freezing of water into ice is a key process that is still not fully understood. It generally requires an impurity of some description to initiate the heterogeneous nucleation of the ice crystals. The molecular structure, as well as the extent of structural order within the impurity in question, both play an essential role in determining its effectiveness. However, disentangling these two contributions is a challenge for both experiments and simulations. In this work, we have systematically investigated the ice-nucleating ability of the very same compound, cholesterol, from the crystalline (and thus ordered) form to disordered self-assembled monolayers. Leveraging a combination of experiments and simulations, we identify a “sweet spot” in terms of the surface coverage of the monolayers, whereby cholesterol maximises its ability to nucleate ice (which remains inferior to that of crystalline cholesterol) by enhancing the structural order of the interfacial water molecules. These findings have practical implications for the rational design of synthetic ice-nucleating agents.

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Language(s): eng - English
 Dates: 2022-04-08
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: ISI: 000783329600001
DOI: 10.1039/d1sc06338c
 Degree: -

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Title: Chemical Science
  Other : Chem. Sci.
Source Genre: Journal
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Publ. Info: Cambridge, UK : Royal Society of Chemistry
Pages: 13 Volume / Issue: - Sequence Number: - Start / End Page: - Identifier: ISSN: 2041-6520
CoNE: https://pure.mpg.de/cone/journals/resource/2041-6520