Polyamines Promote Aragonite Nucleation and Generate Biomimetic Structures

Abstract Calcium carbonate biomineralization is remarkable for the ability of organisms to produce calcite or aragonite with perfect fidelity, where this is commonly attributed to specific anionic biomacromolecules. However, it is proven difficult to mimic this behavior using synthetic or biogenic a...

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Main Authors: Ouassef Nahi, Alexander N. Kulak, Shuheng Zhang, Xuefeng He, Zabeada Aslam, Martha A. Ilett, Ian J. Ford, Robert Darkins, Fiona C. Meldrum
Format: Article
Language:English
Published: Wiley 2023-01-01
Series:Advanced Science
Subjects:
Online Access:https://doi.org/10.1002/advs.202203759
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author Ouassef Nahi
Alexander N. Kulak
Shuheng Zhang
Xuefeng He
Zabeada Aslam
Martha A. Ilett
Ian J. Ford
Robert Darkins
Fiona C. Meldrum
author_facet Ouassef Nahi
Alexander N. Kulak
Shuheng Zhang
Xuefeng He
Zabeada Aslam
Martha A. Ilett
Ian J. Ford
Robert Darkins
Fiona C. Meldrum
author_sort Ouassef Nahi
collection DOAJ
description Abstract Calcium carbonate biomineralization is remarkable for the ability of organisms to produce calcite or aragonite with perfect fidelity, where this is commonly attributed to specific anionic biomacromolecules. However, it is proven difficult to mimic this behavior using synthetic or biogenic anionic organic molecules. Here, it is shown that cationic polyamines ranging from small molecules to large polyelectrolytes can exert exceptional control over calcium carbonate polymorph, promoting aragonite nucleation at extremely low concentrations but suppressing its growth at high concentrations, such that calcite or vaterite form. The aragonite crystals form via particle assembly, giving nanoparticulate structures analogous to biogenic aragonite, and subsequent growth yields stacked aragonite platelets comparable to structures seen in developing nacre. This mechanism of polymorph selectivity is captured in a theoretical model based on these competing nucleation and growth effects and is completely distinct from the activity of magnesium ions, which generate aragonite by inhibiting calcite. Profiting from these contrasting mechanisms, it is then demonstrated that polyamines and magnesium ions can be combined to give unprecedented control over aragonite formation. These results give insight into calcite/aragonite polymorphism and raise the possibility that organisms may exploit both amine‐rich organic molecules and magnesium ions in controlling calcium carbonate polymorph.
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spelling doaj.art-aa3bd28628d443d1a6c7a4361f8a20352023-01-04T10:53:44ZengWileyAdvanced Science2198-38442023-01-01101n/an/a10.1002/advs.202203759Polyamines Promote Aragonite Nucleation and Generate Biomimetic StructuresOuassef Nahi0Alexander N. Kulak1Shuheng Zhang2Xuefeng He3Zabeada Aslam4Martha A. Ilett5Ian J. Ford6Robert Darkins7Fiona C. Meldrum8School of Chemistry University of Leeds Woodhouse Lane Leeds LS2 9JT UKSchool of Chemistry University of Leeds Woodhouse Lane Leeds LS2 9JT UKSchool of Chemistry University of Leeds Woodhouse Lane Leeds LS2 9JT UKSchool of Chemistry University of Leeds Woodhouse Lane Leeds LS2 9JT UKSchool of Chemical and Process Engineering University of Leeds Woodhouse Lane Leeds LS2 9JT UKSchool of Chemical and Process Engineering University of Leeds Woodhouse Lane Leeds LS2 9JT UKLondon Centre for Nanotechnology University College London 17–19 Gordon Street London WC1H 0AH UKLondon Centre for Nanotechnology University College London 17–19 Gordon Street London WC1H 0AH UKSchool of Chemistry University of Leeds Woodhouse Lane Leeds LS2 9JT UKAbstract Calcium carbonate biomineralization is remarkable for the ability of organisms to produce calcite or aragonite with perfect fidelity, where this is commonly attributed to specific anionic biomacromolecules. However, it is proven difficult to mimic this behavior using synthetic or biogenic anionic organic molecules. Here, it is shown that cationic polyamines ranging from small molecules to large polyelectrolytes can exert exceptional control over calcium carbonate polymorph, promoting aragonite nucleation at extremely low concentrations but suppressing its growth at high concentrations, such that calcite or vaterite form. The aragonite crystals form via particle assembly, giving nanoparticulate structures analogous to biogenic aragonite, and subsequent growth yields stacked aragonite platelets comparable to structures seen in developing nacre. This mechanism of polymorph selectivity is captured in a theoretical model based on these competing nucleation and growth effects and is completely distinct from the activity of magnesium ions, which generate aragonite by inhibiting calcite. Profiting from these contrasting mechanisms, it is then demonstrated that polyamines and magnesium ions can be combined to give unprecedented control over aragonite formation. These results give insight into calcite/aragonite polymorphism and raise the possibility that organisms may exploit both amine‐rich organic molecules and magnesium ions in controlling calcium carbonate polymorph.https://doi.org/10.1002/advs.202203759biomineralizationcalcium carbonatemagnesiumnon‐classical crystallizationpolymorph
spellingShingle Ouassef Nahi
Alexander N. Kulak
Shuheng Zhang
Xuefeng He
Zabeada Aslam
Martha A. Ilett
Ian J. Ford
Robert Darkins
Fiona C. Meldrum
Polyamines Promote Aragonite Nucleation and Generate Biomimetic Structures
Advanced Science
biomineralization
calcium carbonate
magnesium
non‐classical crystallization
polymorph
title Polyamines Promote Aragonite Nucleation and Generate Biomimetic Structures
title_full Polyamines Promote Aragonite Nucleation and Generate Biomimetic Structures
title_fullStr Polyamines Promote Aragonite Nucleation and Generate Biomimetic Structures
title_full_unstemmed Polyamines Promote Aragonite Nucleation and Generate Biomimetic Structures
title_short Polyamines Promote Aragonite Nucleation and Generate Biomimetic Structures
title_sort polyamines promote aragonite nucleation and generate biomimetic structures
topic biomineralization
calcium carbonate
magnesium
non‐classical crystallization
polymorph
url https://doi.org/10.1002/advs.202203759
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