Amorphous Phase Mediated Crystallization: Fundamentals of Biomineralization

Jin, Wenjing; Jiang, Shuqin; Pan, Haihua; Tang, Ruikang

doi:10.3390/cryst8010048

Cited by 45 publications

(43 citation statements)

References 195 publications

(327 reference statements)

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“…This results in an “organic‐inorganic hybrid structure” (Cölfen, ) composed of small regions connected by organic compounds around and within the crystal. This non‐classical model has been more recently observed by other authors (Cartwright, Checa, Gale, Gebauer, & Sainz‐Diaz ; Marin, Le Roy, & Marie ; Jin, Jiang, Pan, & Tang, ) confirming the presence of organic molecule and precursor phases during the formation of biominerals. The presence and influence of organic molecules during the mineralization process have also been identified in corals, and can be species specific (Reggi et al, ).…”

Section: Introductionsupporting

confidence: 80%

Significance of fluid chemistry throughout diagenesis of aragonitic Porites corals – An experimental approach

Pederson

Weiss

Mavromatis

et al. 2019

The Depositional Record

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Marine carbonates are among the most important archives of environmental information in both modern and past environments. Widely used but particularly sensitive archives are the aragonitic skeletons of scleractinian corals. However, due to the metastable nature of aragonite, a multitude of chemical, mineralogical, and (micro)biological processes can lead to diagenetic alteration of these archives and their proxy information can be altered or lost. Here, hydrothermal alteration experiments were performed to create a better understanding of the diagenesis of an often‐utilized genus, Porites. Same‐specimen subsamples were heated in two fluid types and at two temperatures and durations, and their resulting alteration features were assessed to allow insight to the mechanisms and drivers of diagenetic modification. Experiments with fluid temperatures of 130°C induced remobilization and darkening of organic matrices, with no other evidence for alteration observed. In contrast, specimens exposed to a temperature of 160°C underwent significant diagenetic alteration dependent on fluid type. Fluid chemistry, particularly Mg/Ca ratios, was found to regulate the type of alteration (e.g. neomorphism or reprecipitation). Reaction with meteoric water resulted in almost complete neomorphism of the aragonite skeleton to blocky calcite, as well as significant exchange with the experimental fluid. In comparison, samples altered in the experimental burial fluids record no mineralogic or significant isotopic change, but instead, small‐scale dissolution–reprecipitation of the primary skeleton, along with the precipitation of pore‐filling aragonitic needle cements was observed. The δ18Ocarbonate data indicate transformation via dissolution–reprecipitation mechanisms depending on the degree and mechanism of diagenesis, and are strongly dependent on fluid chemistry. The main outcome of this work is that a multi‐proxy approach has the best potential to shed light on the interpretation of processes and pathways of aragonitic coral alteration. This study has implications for early alteration of carbonate archives within varying diagenetic fluids, with results aiding in the identification of past burial conditions.

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Section: Introductionsupporting

confidence: 80%

Significance of fluid chemistry throughout diagenesis of aragonitic Porites corals – An experimental approach

Pederson

Weiss

Mavromatis

et al. 2019

The Depositional Record

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“…The inorganic-organic advanced hybrid materials formed by the biomineralization process have excellent physical and chemical properties, such as good wear resistance and extremely high fracture toughness and strength, which are unmatched by those of synthetic materials [1][2][3]. Calcium carbonate (CaCO 3 ) is one of the most abundant biominerals in nature [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

“…The preparation of highly regulated CaCO 3 with fine structures under ambient conditions has attracted much attention [8][9][10]. Biomineralized calcium carbonate products have good biocompatibility and can be used not only as structural support for organisms [2] but also as biosensors [11], controlled released drug carriers [12,13], and so on. Nucleation and template effects in the context of CaCO 3 synthesis and crystalline phase changes have been studied for years [14,15].…”

Section: Introductionmentioning

confidence: 99%

Calcium Carbonate Mineralization in a Surface-Tension-Confined Droplets Array

Xia

Zhang

et al. 2019

Crystals

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Calcium carbonate biomimetic crystallization remains a topic of interest with respect to biomineralization areas in recent research. It is not easy to conduct high-throughput experiments with only a few macromolecule reagents using conventional experimental methods. However, the emergence of microdroplet array technology provides the possibility to solve these issues efficiently. In this article, surface-tension-confined droplet arrays were used to fabricate calcium carbonate. It was found that calcium carbonate crystallization can be conducted in surface-tension-confined droplets. Defects were found on the surface of some crystals, which were caused by liquid flow inside the droplet and the rapid drop in droplet height during the evaporation. The diameter and number of crystals were related to the droplet diameter. Polyacrylic acid (PAA), added as a modified organic molecule control, changed the CaCO3 morphology from calcite to vaterite. The material products of the above experiments were compared with bulk-synthesized calcium carbonate by scanning electron microscopy (SEM), Raman spectroscopy and other characterization methods. Our work proves the possibility of performing biomimetic crystallization and biomineralization experiments on surface-tension-confined microdroplet arrays.

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“…In addition, they are formed in an economical way at low temperatures and pressures, thereby inspiring novel routes of green synthesis [1]. The picture that has emerged in recent years is that the superior properties of biological materials could be a consequence of them being amorphous or formed by amorphous mediated crystallization [2]. Indeed, it is estimated that one fifth of all known biominerals are amorphous (materials with no discernible X-ray diffraction) [3].…”

Section: Introductionmentioning

confidence: 99%

“…The aggregation state of ACP is among the key factors determining its further transformation [2,28,29]. Compared to aggregation of nanoparticles, aggregation of ACP is a more complex process that proceeds simultaneously at significantly different length scales.…”

Section: Introductionmentioning

confidence: 99%

Amorphous Calcium Phosphate Formation and Aggregation Process Revealed by Light Scattering Techniques

et al. 2018

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Amorphous calcium phosphate (ACP) attracts attention as a precursor of crystalline calcium phosphates (CaPs) formation in vitro and in vivo as well as due to its excellent biological properties. Its formation can be considered to be an aggregation process. Although aggregation of ACP is of interest for both gaining a fundamental understanding of biominerals formation and in the synthesis of novel materials, it has still not been investigated in detail. In this work, the ACP aggregation was followed by two widely applied techniques suitable for following nanoparticles aggregation in general: dynamic light scattering (DLS) and laser diffraction (LD). In addition, the ACP formation was followed by potentiometric measurements and formed precipitates were characterized by Fourier transform infrared spectroscopy (FTIR), powder X-ray diffraction (PXRD), transmission electron microscopy (TEM), and atomic force microscopy (AFM). The results showed that aggregation of ACP particles is a process which from the earliest stages simultaneously takes place at wide length scales, from nanometers to micrometers, leading to a highly polydisperse precipitation system, with polydispersity and vol. % of larger aggregates increasing with concentration. Obtained results provide insight into developing a way of regulating ACP and consequently CaP formation by controlling aggregation on the scale of interest.

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Amorphous Phase Mediated Crystallization: Fundamentals of Biomineralization

Cited by 45 publications

References 195 publications

Significance of fluid chemistry throughout diagenesis of aragonitic Porites corals – An experimental approach

Significance of fluid chemistry throughout diagenesis of aragonitic Porites corals – An experimental approach

Calcium Carbonate Mineralization in a Surface-Tension-Confined Droplets Array

Amorphous Calcium Phosphate Formation and Aggregation Process Revealed by Light Scattering Techniques

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