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Stable prenucleation mineral clusters are liquid-like ionic polymers

Author

Listed:
  • Raffaella Demichelis

    (Nanochemistry Research Institute, Curtin University, PO Box U1987, Perth, Western Australia 6845, Australia.)

  • Paolo Raiteri

    (Nanochemistry Research Institute, Curtin University, PO Box U1987, Perth, Western Australia 6845, Australia.)

  • Julian D. Gale

    (Nanochemistry Research Institute, Curtin University, PO Box U1987, Perth, Western Australia 6845, Australia.)

  • David Quigley

    (University of Warwick)

  • Denis Gebauer

    (University of Konstanz)

Abstract

Calcium carbonate is an abundant substance that can be created in several mineral forms by the reaction of dissolved carbon dioxide in water with calcium ions. Through biomineralization, organisms can harness and control this process to form various functional materials that can act as anything from shells through to lenses. The early stages of calcium carbonate formation have recently attracted attention as stable prenucleation clusters have been observed, contrary to classical models. Here we show, using computer simulations combined with the analysis of experimental data, that these mineral clusters are made of an ionic polymer, composed of alternating calcium and carbonate ions, with a dynamic topology consisting of chains, branches and rings. The existence of a disordered, flexible and strongly hydrated precursor provides a basis for explaining the formation of other liquid-like amorphous states of calcium carbonate, in addition to the non-classical behaviour during growth of amorphous calcium carbonate.

Suggested Citation

  • Raffaella Demichelis & Paolo Raiteri & Julian D. Gale & David Quigley & Denis Gebauer, 2011. "Stable prenucleation mineral clusters are liquid-like ionic polymers," Nature Communications, Nature, vol. 2(1), pages 1-8, September.
    • Handle: RePEc:nat:natcom:v:2:y:2011:i:1:d:10.1038_ncomms1604
    DOI: 10.1038/ncomms1604
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    Cited by:

    1. David P. McDonogh & Julian D. Gale & Paolo Raiteri & Denis Gebauer, 2024. "Redefined ion association constants have consequences for calcium phosphate nucleation and biomineralization," Nature Communications, Nature, vol. 15(1), pages 1-13, December.
    2. Xabier M. Aretxabaleta & Jon López-Zorrilla & Iñigo Etxebarria & Hegoi Manzano, 2023. "Multi-step nucleation pathway of C-S-H during cement hydration from atomistic simulations," Nature Communications, Nature, vol. 14(1), pages 1-9, December.

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