Freezing‐ and Drying‐Induced Micro‐ and Nano‐Heterogeneity in Biological Solutions

Aksan, Alptekin; Ragoonanan, Vishard; Hirschmugl, Carol J.

doi:10.1002/9781118354698.ch10

Biophysical Methods for Biotherapeutics 2014

DOI: 10.1002/9781118354698.ch10

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Freezing‐ and Drying‐Induced Micro‐ and Nano‐Heterogeneity in Biological Solutions

Alptekin Aksan

Vishard Ragoonanan

Carol J. Hirschmugl

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2015

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“…In many situations this event is induced by a heterogeneous ice nucleating particle (INP). Ice nucleation is an important process for understanding of atmospheric processes − and also has relevance in other fields such as the cryopreservation of biological samples, freeze-drying of pharmaceuticals and other substances, and freezing of foodstuffs . Much effort has been devoted to the quantification of the efficiencies of heterogeneous ice nucleants of potential atmospheric relevance.…”

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Ice Nucleation Properties of Oxidized Carbon Nanomaterials

Whale

Rosillo‐Lopez

Murray

et al. 2015

J. Phys. Chem. Lett.

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Heterogeneous ice nucleation is an important process in many fields, particularly atmospheric science, but is still poorly understood. All known inorganic ice nucleating particles are relatively large in size and tend to be hydrophilic. Hence it is not obvious that carbon nanomaterials should nucleate ice. However, in this paper we show that four different readily water-dispersible carbon nanomaterials are capable of nucleating ice. The tested materials were carboxylated graphene nanoflakes, graphene oxide, oxidized single walled carbon nanotubes and oxidized multiwalled carbon nanotubes. The carboxylated graphene nanoflakes have a diameter of ∼30 nm and are among the smallest entities observed so far to nucleate ice. Overall, carbon nanotubes were found to nucleate ice more efficiently than flat graphene species, and less oxidized materials nucleated ice more efficiently than more oxidized species. These well-defined carbon nanomaterials may pave the way to bridging the gap between experimental and computational studies of ice nucleation.

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mentioning

confidence: 99%

Ice Nucleation Properties of Oxidized Carbon Nanomaterials

Whale

Rosillo‐Lopez

Murray

et al. 2015

J. Phys. Chem. Lett.

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Freezing‐ and Drying‐Induced Micro‐ and Nano‐Heterogeneity in Biological Solutions

Cited by 1 publication

References 72 publications

Ice Nucleation Properties of Oxidized Carbon Nanomaterials

Ice Nucleation Properties of Oxidized Carbon Nanomaterials

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