Biomineralization: Self‐Assembly Processes

Yu, Shu‐Hong; Chen, Shaofeng

doi:10.1002/0470862106.ia353

Cited by 2 publications

(6 citation statements)

References 161 publications

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“…The change in surface energy can be explained if c25-mms6 interacts with the crystallites in such a way that growth in which the (111) final crystal face forms is favoured. Growth modification by peptide adsorption has previously been reported [ 9 , 21 – 22 ].…”

Section: Discussionmentioning

confidence: 99%

“…The assembly mechanism which leads to the formation of mesocrystals is discussed heavily in the scientific community at the moment. Several possible interaction mechanism have been proposed previously [ 9 , 11 ]. The interparticle forces, including van-der-Waals-attraction and repulsive forces due to c25-mms6 or hydration layers, are most likely the dominating factors in this process since the small substructures possess diameters below the superparamagnetic limit [ 9 , 11 ].…”

Section: Discussionmentioning

confidence: 99%

“…In 1998, Penn and Banfield introduced a new model called “oriented attachment” [ 8 ]. In this non-classical growth theory, crystal growth is dominated by kinetics [ 9 ]. Fig.…”

Section: Introductionmentioning

confidence: 99%

“…1 gives an overview of the oriented attachment process. Individual crystals, called primary building blocks, self-assemble into metastable, intermediate phases such as mesocrystals [ 9 – 11 ], for which several formation mechanisms have been proposed. These mechanisms are summarized, e.g., in Cölfen’s work [ 7 , 11 ].…”

Section: Introductionmentioning

confidence: 99%

“…The secondary nanoparticle, formed by this aggregation, often displays unusual morphologies [ 12 ] as well as regions of substantial orientation [ 14 ]. A more detailed description of this non-classical growth theory is given elsewhere [ 7 – 9 11 – 12 14 – 15 ]. Previous work has focussed on high resolution transmission electron microscopy measurements, in which defects and lattice fringes were studied to show the underlying aggregation-based growth process [ 14 , 16 – 19 ].…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Oriented attachment explains cobalt ferrite nanoparticle growth in bioinspired syntheses

Wolff¹,

Hetaba²,

Wißbrock³

et al. 2014

Beilstein J. Nanotechnol.

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SummaryOriented attachment has created a great debate about the description of crystal growth throughout the last decade. This aggregation-based model has successfully described biomineralization processes as well as forms of inorganic crystal growth, which could not be explained by classical crystal growth theory. Understanding the nanoparticle growth is essential since physical properties, such as the magnetic behavior, are highly dependent on the microstructure, morphology and composition of the inorganic crystals. In this work, the underlying nanoparticle growth of cobalt ferrite nanoparticles in a bioinspired synthesis was studied. Bioinspired syntheses have sparked great interest in recent years due to their ability to influence and alter inorganic crystal growth and therefore tailor properties of nanoparticles. In this synthesis, a short synthetic version of the protein MMS6, involved in nanoparticle formation within magnetotactic bacteria, was used to alter the growth of cobalt ferrite. We demonstrate that the bioinspired nanoparticle growth can be described by the oriented attachment model. The intermediate stages proposed in the theoretical model, including primary-building-block-like substructures as well as mesocrystal-like structures, were observed in HRTEM measurements. These structures display regions of substantial orientation and possess the same shape and size as the resulting discs. An increase in orientation with time was observed in electron diffraction measurements. The change of particle diameter with time agrees with the recently proposed kinetic model for oriented attachment.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

“…In 1998, Penn and Banfield introduced a new model called “oriented attachment” [ 8 ]. In this non-classical growth theory, crystal growth is dominated by kinetics [ 9 ]. Fig.…”

Section: Introductionmentioning

confidence: 99%