On the real-structure of biomimetically grown hexagonal prismatic seeds of fluorapatite–gelatine-composites: TEM investigations along [001]

Simon, Paul; Carrillo‐Cabrera, W.; Formánek, Petr; Göbel, Caren; Geiger, Dorin; Ramlau, R.; Tlatlik, Harald; Buder, Jana; Kniep, Rüdiger

doi:10.1039/b402627f

Cited by 72 publications

(138 citation statements)

References 49 publications

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“…As revealed by TEM investigations, the composite consists of parallely stacked elongated hexagonal-prismatic nanocomposite subunits oriented with their long axes parallel to the [001] direction, thereby giving rise to scattering properties similar to that of single crystals. [114,115] The mesocrystalline state of this highly controlled nanocomposite superstructure has been ascertained in a previous review paper. [2,3] The fractal morphogenesis of this nanocomposite involves the evolution from hexagonal prismatic mesocrystal seeds via dumbbell structures to spheres.…”

Section: Fluorapatite-gelatin Mesocrystalsmentioning

confidence: 98%

Mesocrystals—Ordered Nanoparticle Superstructures

2010

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Mesocrystals are 3D ordered nanoparticle superstructures, often with internal porosity, which receive much recent research interest. While more and more mesocrystal systems are found in biomineralization or synthesized, their potential as material still needs to be explored. It needs to be revealed, which new chemical and physical properties arise from the mesocrystal structure, or how they change by the ordered aggregation of nanoparticles to fully exploit the promising potential of mesocrystals. Also, the mechanisms for mesocrystal synthesis need to be explored to adapt it to a wide class of materials. The last three years have seen remarkable progress, which is summarized here. Also potential future directions of this reaserch field are discussed. This shows the importance of mesocrystals not only for the field of materials research and allows the appliction of mesocrystals in advanced materials synthesis or property improvement of existing materials. It also outlines attractive research directions in this field.

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Section: Fluorapatite-gelatin Mesocrystalsmentioning

confidence: 98%

Mesocrystals—Ordered Nanoparticle Superstructures

2010

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“…3) was achieved by diffusion of calcium -and orthophosphate + fluoride solutions from opposite sides into a tube filled with a gelatin gel. [444][445][446][447][448][449][450][451][452][453] The reasons for this phenomenon are not quite clear yet; besides, up to now, nothing has yet been reported on a possible biomedical application for such very unusual structural composites.…”

Section: ©2 0 1 1 L a N D E S B I O S C I E N C E D O N O T D I S Tmentioning

confidence: 99%

Biocomposites and hybrid biomaterials based on calcium orthophosphates

Dorozhkin¹

2011

Biomatter

156

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“…One of these examples is the work of Kniep and coworkers, [30][31][32][33][34][35][36] who described the formation of spherical FAP particles in gelatin hydrogels, mostly via double diffusion techniques. Initially, hexagonal rods form, which later on transform into fractal-like structures yielding FAP dumbbells and nally closed spheres.…”

Section: 26mentioning

confidence: 99%

Poly(ethylene oxide)-based block copolymers with very high molecular weights for biomimetic calcium phosphate mineralization

et al. 2015

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The present article is among the first reports on the effects of poly(ampholyte)s and poly(betaine)s on the biomimetic formation of calcium phosphate. We have synthesized a series of di-and triblock copolymers based on a non-ionic poly(ethylene oxide) block and several charged methacrylate monomers, 2-(trimethylammonium)ethyl methacrylate chloride, 2-((3-cyanopropyl)-dimethylammonium)ethyl methacrylate chloride, 3-sulfopropyl methacrylate potassium salt, and [2-(methacryloyloxy)ethyl]dimethyl-(3-sulfopropyl) ammonium hydroxide. The resulting copolymers are either positively charged, ampholytic, or betaine block copolymers. All the polymers have very high molecular weights of over 10 6 g mol À1 . All polymers are water-soluble and show a strong effect on the precipitation and dissolution of calcium phosphate.The strongest effects are observed with triblock copolymers based on a large poly(ethylene oxide) middle block (nominal M n ¼ 100 000 g mol À1 ). Surprisingly, the data show that there is a need for positive charges in the polymers to exert tight control over mineralization and dissolution, but that the exact position of the charge in the polymer is of minor importance for both calcium phosphate precipitation and dissolution.

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On the real-structure of biomimetically grown hexagonal prismatic seeds of fluorapatite–gelatine-composites: TEM investigations along [001]

Cited by 72 publications

References 49 publications

Mesocrystals—Ordered Nanoparticle Superstructures

Mesocrystals—Ordered Nanoparticle Superstructures

Biocomposites and hybrid biomaterials based on calcium orthophosphates

Poly(ethylene oxide)-based block copolymers with very high molecular weights for biomimetic calcium phosphate mineralization

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