Self‐Organized Calcium Carbonate with Regular Surface‐Relief Structures

Sugawara, Ayae; Ishii, Takeshi; Kato, Takashi

doi:10.1002/anie.200351541

Cited by 181 publications

(130 citation statements)

References 43 publications

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“…Detailed analyses of the biological processes have allowed us to use or mimic them for creating a new generation of synthetic materials (Sugawara et al 2003;Nuraje et al 2006;Sano et al 2006). The Mms6 represents a class of proteins that are tightly associated with the BacMP surface in M. magneticum AMB-1 .…”

Section: In Vitro Chemical Synthesis Of Magnetite Particlesmentioning

confidence: 99%

Formation of magnetite by bacteria and its application

Arakaki

Nakazawa

Nemoto

et al. 2008

J. R. Soc. Interface.

220

176

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Magnetic particles offer high technological potential since they can be conveniently collected with an external magnetic field. Magnetotactic bacteria synthesize bacterial magnetic particles (BacMPs) with well-controlled size and morphology. BacMPs are individually covered with thin organic membrane, which confers high and even dispersion in aqueous solutions compared with artificial magnetites, making them ideal biotechnological materials. Recent molecular studies including genome sequence, mutagenesis, gene expression and proteome analyses indicated a number of genes and proteins which play important roles for BacMP biomineralization. Some of the genes and proteins identified from these studies have allowed us to express functional proteins efficiently onto BacMPs, through genetic engineering, permitting the preservation of the protein activity, leading to a simple preparation of functional protein-magnetic particle complexes. They were applicable to high-sensitivity immunoassay, drug screening and cell separation. Furthermore, fully automated single nucleotide polymorphism discrimination and DNA recovery systems have been developed to use these functionalized BacMPs. The nano-sized fine magnetic particles offer vast potential in new nano-techniques.

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Section: In Vitro Chemical Synthesis Of Magnetite Particlesmentioning

confidence: 99%

Formation of magnetite by bacteria and its application

Arakaki

Nakazawa

Nemoto

et al. 2008

J. R. Soc. Interface.

220

176

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“…It has been demonstrated that various synthetic complexes including macromolecules such as poly (acrylate), poly (Glu) or poly (Asp), stearic acid monolayer, glycoproteins, and mercaptophenol-protected gold colloids have specific and prominent influences on mediating the formation of ACC [8][9][10]. Aizenberg et al previously suggested that the ACC film crystallization process occurs by mass transport between the amorphous and crystalline [11].…”

Section: ____________________mentioning

confidence: 98%

Controlled deposition and transformation of amorphous calcium carbonate thin films

Huang

Shen

Xie

et al. 2009

Cryst. Res. Technol.

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Controlled synthesis of amorphous calcium carbonate (ACC) films was realized by using the multiple templates, which are composed of a self-assembled film (SAF, insoluble Poly (ε-caprolactone) film) and a soluble modifier (poly allylamine), as modifiers. The formation of self-assembled film was analyzed by monitoring the morphologies using atomic force microscopy. Even more noteworthy, using anhydrous ethanol as media, the ACC-to-vaterite-to-calcite transformation was also investigated, and the obtained products were characterized by scanning electron microscopy, Fourier transform infrared spectroscopy, and X-ray diffraction. The results demonstrated that organic solvent has profound influence on transformation of amorphous calcium carbonate thin films. In the air of anhydrous ethanol, the controlled synthesis of calcium carbonate films with different morphologies, such as planar films with a few sporadic particles, symmetric rhombohedral crystals, novel crystals with symmetrical terraced convexity formation of calcite, was obtained by the fine-tuning of induction time. It provides a new and simple method to prepare polymorphic CaCO 3 crystal films from the ACC films by controlling the crystallization process

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“…The formation of CaCO 3 films on an insoluble organic substrate in the presence of PAA has been investigated by many researchers. [9][10][11][91][92][93] However, the influence of the polyelectrolyte on the morphology of CaCO 3 crystals has not been sufficiently clarified because morphological evolution required the coexistence of the organic substrates in most of the previous studies. We systematically investigated the influence of the concentration and the molecular weight of PAA on the morphological evolution of CaCO 3 grown on a simple glass substrate in order to clarify the performance of the polymeric molecules.…”

Section: Emergence Of Self-organizationmentioning

confidence: 99%

“…4 Thus, biomimetic approaches for crystal growth has been studied using various kinds of organic molecules and molecular assembly. [5][6][7][8][9][10][11][12][13][14][15] Morphogenesis with coexisting molecules has been reported by many research groups as well as the control of the nucleation sites with specific organic surfaces, including polymer films and self-assembled monolayers. Emergence of complex and hierarchical architectures of inorganic crystals through self-organization has been found in aqueous solution systems.…”

Section: Introductionmentioning

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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Self‐Organized Calcium Carbonate with Regular Surface‐Relief Structures

Abstract: CaCO3 composites with regular surface‐relief structures have been synthesized (see picture). These sub‐micrometer‐scale structures are spontaneously formed on a thin matrix of a modified polysaccharide from aqueous solution containing an acidic polymer.

Cited by 181 publications

References 43 publications

Formation of magnetite by bacteria and its application

Formation of magnetite by bacteria and its application

Controlled deposition and transformation of amorphous calcium carbonate thin films

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

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