Nonclassical crystallization in vivo et in vitro (I): Process-structure-property relationships of nanogranular biominerals

Wolf, Stephan E.; Böhm, Corinna F.; Harris, Joe; Demmert, Benedikt; Jacob, Dorrit E.; Mondeshki, Mihail; Ruíz-Agudo, Encarnación; Rodríguez-Navarro, Carlos

doi:10.1016/j.jsb.2016.07.016

Cited by 74 publications

(98 citation statements)

References 182 publications

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“…The exact mechanism of calcium carbonate mineralization in molluscs in vivo and in vitro is still discussed in literature. Current evidence is pointing towards growth by colloidal attachment of amorphous calcium carbonate (ACC) nanoparticles followed by crystallization and fusion with the growing crystal . Figures a–d clearly demonstrate that the process of mineral block formation in the depicted structures follows the described classical thermodynamically favorable pathways for crystallization – two‐dimensional terrace nucleation and screw dislocation assisted spiral growth.…”

Section: Evidence Of Spontaneous Growthmentioning

confidence: 93%

“…During the last few decades, a significant progress has been made in understanding the key mechanisms involved in shells biomineralization from the biological and chemical perspectives . This includes identifying some aspects of organism‐specific biochemical machinery responsible for the formation of the mineral phase, determining the pathways of calcium carbonate nucleation, crystallization and growth and determining the biological components controlling structure‐specific polymorph selection . Nevertheless, very little is known about the mechanisms that are responsible for the morphogenesis of shell ultrastructures.…”

Section: Introductionmentioning

confidence: 99%

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Thermodynamic Aspects of Molluscan Shell Ultrastructural Morphogenesis

Zlotnikov

Schoeppler

2017

Adv Funct Materials

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Over the years, molluscan shells have become an exemplar model system to study the process of mineral formation by living organisms, the process of biomineralization. Typically, the shells consist of a number of mineralized ultrastructural motifs, each exhibiting a specific mineral-organic composite architecture. These are made of calcium carbonate building blocks having a well-defined three-dimensional morphology that is significantly different from the shape of inorganically formed counterparts. Shell ultrastructures are known to form via a biologically controlled extracellular mineralization pathway in which the organism has no direct control over mineral formation. The cellular tissue, responsible for shell biomineralization, forms an organic framework and sets-up the physical conditions necessary for the deposition of a specific morphology, whereas the growth of the mineral part of the shell proceeds spontaneously via the process of self-assembly. In this feature article, the ability to employ thermodynamic models from classical materials science to describe the process of self-assembly and structural evolution of a variety of shell architectures is reviewed. Having the potential to offer an analytical framework to express ultrastructure formation in time and in space, these models not only provide a deeper insight into shell biomineralization, but also suggest tools for novel composite materials design.

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Section: Evidence Of Spontaneous Growthmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Thermodynamic Aspects of Molluscan Shell Ultrastructural Morphogenesis

Zlotnikov

Schoeppler

2017

Adv Funct Materials

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“…Analogous to the mechanistic roles of atoms, ions and molecules in the classical descriptions of particle nucleation and growth, crystalline and amorphous particles can serve as modular building blocks for generating complex morphologies and superstructures via mesoscale transformations . Consider a hypothetical scenario wherein the colliding nanocrystals share identical crystallographic register prior to contact.…”

Section: On the Nature Of Materials Precursorsmentioning

confidence: 99%

From Solute, Fluidic and Particulate Precursors to Complex Organizations of Matter

Rao

Cölfen

2018

The Chemical Record

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The organization of matter from its constitutive units recruits intermediate states with distinctive degrees of self-association and molecular order. Existing as clusters, droplets, gels as well as amorphous and crystalline nanoparticles, these precursor forms have fundamental contributions towards the composition and structure of inorganic and organic architectures. In this personal account, we show that the transitions from atoms, molecules or ionic species to superstructures of higher order are intertwined with the interfaces and interactions of precursor and intermediate states. Structural organizations distributed across different length scales are explained by the multistep nature of nucleation and crystallization, which can be guided towards functional hybrid materials by the strategic application of additives, templates and reaction environments. Thus, the non-classical pathways for material formation and growth offer conceptual frameworks for elucidating, inducing and directing fascinating material organizations of biogenic and synthetic origins.

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“…CaCO 3 polymorphic transformation follows an energetically downhill sequence: ACC → Vaterite → Aragonite → Calcite [21]. However, indirect transformations or more complex mechanisms out of the classical nucleation theory (CNT) may also occur [22], resulting on unknown activation energies and growth/dissolution rates. Multiple studies have been carried out to unravel the mechanisms and the energetics among the CaCO 3 polymorphic transformations in solutions, both computational and experimental [9][10][11]21].…”

Section: Introductionmentioning

confidence: 99%

Mechanisms of Phase Transformation and Creating Mechanical Strength in a Sustainable Calcium Carbonate Cement

Rodríguez-Sánchez

Liberto

Barentin

et al. 2018

Preprint

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Calcium carbonate cements have been synthesized by mixing amorphous calcium carbonate and vaterite powders with water to unravel the mechanisms of creating mechanical strength during the setting reaction. In-situ XRD was used to monitor the transformation of ACC and vaterite phases into calcite. Unlike this transformation of crystals suspended in a stirred solution, the transformation in the cement is controlled by vaterite dissolution. The supersaturation within the cement paste, Ω, depends not only on the bulk free energy difference of the phases, ΔG, but also on the grain size evolution. Among the strengthening mechanisms, an initial geometric reorganization of CaCO3 particles has been identified by rheological measurements; followed by the formation of an interconnected network of calcite crystals that increases in strength as the crystals grow and form bridges among them. All compositions yield microporous calcite structures with diverse transformation history, crystal bridging efficiency, and hence final mechanical properties.

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Nonclassical crystallization in vivo et in vitro (I): Process-structure-property relationships of nanogranular biominerals

Cited by 74 publications

References 182 publications

Thermodynamic Aspects of Molluscan Shell Ultrastructural Morphogenesis

Thermodynamic Aspects of Molluscan Shell Ultrastructural Morphogenesis

From Solute, Fluidic and Particulate Precursors to Complex Organizations of Matter

Mechanisms of Phase Transformation and Creating Mechanical Strength in a Sustainable Calcium Carbonate Cement

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