Synthesis of Single Crystals of Calcite with Complex Morphologies

Park, Robert J.; Meldrum, Fiona C.

doi:10.1002/1521-4095(20020816)14:16<1167::aid-adma1167>3.0.co;2-x

Cited by 155 publications

(160 citation statements)

References 6 publications

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“…From these, it can be imagined that by a proper choice of organic template and additives many more bilayered materials -if desirable composed of more layers and of different inorganic components -could be synthesized. In this respect the replicating concept of Meldrum and coworkers is of interest [48][49][50][51][52]. They demonstrated the formation of bicontinuous hybrids by filling a polymeric replica of a seaurchin plate with calcium carbonate, which after removal of the template leads to the reversed porous bicontinuous structure which in principle can be filled with another material.…”

Section: Discussionmentioning

confidence: 99%

Biomimetic synthesis of calcium carbonate bilayers interfaced by a diblock copolymer template

Goos

Dey

et al. 2012

Zeitschrift Für Kristallographie - Crystalline Materials

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Abstract. The synthesis of a new class of hybrid materials with two differently oriented layers of calcite at adjacent sides of an organic template is demonstrated. A Langmuir monolayer of the amphiphilic block copolymer poly(butyl acrylate)-b-poly(hydroxypropyl acrylate) directs the formation of a first CaCO 3 phase through interaction with the hydrophilic poly(hydroxypropyl acrylate) blocks. After partial hydrolysis of the hydrophobic poly(butyl acrylate) segments a second CaCO 3 phase is formed on the monolayer associated to the first mineral phase. Thus, bilayered CaCO 3 -based hybrid materials are obtained with two differently oriented calcite phases at opposite sides of the polymer film. By using DNA as an additive the crystal orientation in the second layer can be modified.

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Section: Discussionmentioning

confidence: 99%

Biomimetic synthesis of calcium carbonate bilayers interfaced by a diblock copolymer template

Goos

Dey

et al. 2012

Zeitschrift Für Kristallographie - Crystalline Materials

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“…17 Rigid templates and patterned molds are used for the production of porous, carbonate mimicking biogenic structures. [86][87][88] Microemulsions and gelatin molecules also induce porous vaterite architectures. 89,90 Poly(acrylic acid) (PAA), which is a simple linear polymer having carboxy groups, is commonly utilized as a soluble agent to modify the crystal structure.…”

Section: Emergence Of Self-organizationmentioning

confidence: 99%

A Biomimetic Approach for Hierarchically Structured Inorganic Crystals through Self-Organization

Imai¹,

Oaki²,

Kotachi³

2006

Bulletin of the Chemical Society of Japan

131

103

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Here, we describe a biomimetic pathway for the synthesis of hierarchically structured inorganic crystals. In artificial systems mimicking biomineralization, versatile morphogenesis was achieved with the construction of bridged nanocrystals through self-organization by controlling growth with polymeric molecules such as a gel matrix and soluble anionic polymers. The self-organized formation of bridged crystals in hierarchical architectures is a possible new paradigm for advanced materials processing which could afford new inorganic-organic nanocomposites for use as novel functional materials.

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“…18,20,21 Looking then at biologically-relevant solids such as calcium carbonate and calcium sulfate, confined volumes can provide environments that can control the formation of single crystals with complex morphologies. 7,[22][23][24] Using systems including a crossedcylinders apparatus, 19,25,26 arrays of picolitre droplets, 27 vesicles that offer confinement in the general range 50 nm -50 m, [28][29][30] and the pores of track-etched membranes, [31][32][33] it has also been demonstrated that the lifetimes of amorphous precursor phases and metastable crystalline polymorphs of calcium carbonate, calcium phosphate, calcium sulfate and calcium oxalate can be significantly extended, even in micron-scale environments. While this length scale is relevant to many biomineralization processes, crystallization in the environment (eg.…”

Section: Introductionmentioning

confidence: 99%

Effect of Nanoscale Confinement on the Crystallization of Potassium Ferrocyanide

Anduix‐Canto

Kim

Wang

et al. 2016

Crystal Growth & Design

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Many crystallization processes of great significance in nature and technology occur in small volumes rather than in bulk solution. This article describes an investigation into the effects of nanoscale confinement on the crystallization of the inorganic compound potassium ferrocyanide, K4Fe(CN)6 (KFC). Selected for study due to its high solubility, rich polymorphism and interesting physical properties, K4Fe(CN)6 was precipitated within controlled pore glasses (CPG) with pore diameters of 8, 48 and 362 nm. Remarkable effects were seen, such that although anhydrous potassium ferrocyanide was never observed on precipitation in bulk aqueous solution, it was the first phase to crystallize within the CPGs and was present for at least 1 day in all three pore sizes. Slow transformation to the metastable tetragonal polymorph of the trihydrate K4Fe(CN)6•3H2O (KFCT) then occurred, where this polymorph was stable for a month in 8 nm pores. Finally, conversion to the thermodynamically stable monoclinic polymorph of KFCT was observed, where this phase always found after a few minutes in bulk solution. As far as we are aware these retardation effects -by up to five orders of magnitude in the 8 nm pores -are far greater than any seen previously in inorganic systems, and provide strong evidence for the universal effects of confinement on crystallization.

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Synthesis of Single Crystals of Calcite with Complex Morphologies

Cited by 155 publications

References 6 publications

Biomimetic synthesis of calcium carbonate bilayers interfaced by a diblock copolymer template

Biomimetic synthesis of calcium carbonate bilayers interfaced by a diblock copolymer template

A Biomimetic Approach for Hierarchically Structured Inorganic Crystals through Self-Organization

Effect of Nanoscale Confinement on the Crystallization of Potassium Ferrocyanide

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