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Open AccessFeature PaperArticle

Modulating Nucleation by Kosmotropes and Chaotropes: Testing the Waters

by 1,2,3,*, 1,* and 1
1
Department of Chemistry, Universitätsstr. 10, University of Konstanz, Konstanz 78464, Germany
2
Freiburg Institute for Advanced Studies, Albert-Ludwigs-Universität Freiburg, Freiburg 79104, Germany
3
Centre for Biosystem Analysis, Albert-Ludwigs-Universität Freiburg, Freiburg 79104, Germany
*
Authors to whom correspondence should be addressed.
Crystals 2017, 7(10), 302; https://doi.org/10.3390/cryst7100302
Received: 24 August 2017 / Accepted: 4 October 2017 / Published: 6 October 2017
(This article belongs to the Special Issue Biological and Biogenic Crystallization)
Water is a fundamental solvent sustaining life, key to the conformations and equilibria associated with solute species. Emerging studies on nucleation and crystallization phenomena reveal that the dynamics of hydration associated with mineral precursors are critical in determining material formation and growth. With certain small molecules affecting the hydration and conformational stability of co-solutes, this study systematically explores the effects of these chaotropes and kosmotropes as well as certain sugar enantiomers on the early stages of calcium carbonate formation. These small molecules appear to modulate mineral nucleation in a class-dependent manner. The observed effects are finite in comparison to the established, strong interactions between charged polymers and intermediate mineral forms. Thus, perturbations to hydration dynamics of ion clusters by co-solute species can affect nucleation phenomena in a discernable manner. View Full-Text
Keywords: crystallization; nucleation; kosmotropes; chaotropes; small molecules; hydration crystallization; nucleation; kosmotropes; chaotropes; small molecules; hydration
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MDPI and ACS Style

Rao, A.; Gebauer, D.; Cölfen, H. Modulating Nucleation by Kosmotropes and Chaotropes: Testing the Waters. Crystals 2017, 7, 302.

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