Highly oriented aragonite nanocrystal–biopolymer composites in an aragonite brick of the nacreous layer of Pinctada fucata

Takahashi, Kazuyuki; Yamamoto, H.; Onoda, Akira; Doi, Masamitsu; Inaba, Takashi; Chiba, Masahiko; Kobayashi, Atsuko; Taguchi, Takahisa; Okamura, Taka‐aki; Ueyama, Norikazu

doi:10.1039/b315478e

Cited by 92 publications

(72 citation statements)

References 9 publications

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“…The result is a range of terminologies to describe the hierarchy of structures spanning from polycrystalline mosaic crystals to ordered tactoids [137][138][139][140] (for example, clay, nacre [141,142] ), colloidal crystals, or mesocrystals. [143,144] Recognizing the potential confusion involved in differentiating degrees of order and disorder in particulate systems, Kohlschutter [145] coined the term somatoids to generally describe the continuum of structures leading from molecular precursors to crystalline end products.…”

Section: Nucleation and Growth: Historical And Current Perspectivesmentioning

confidence: 99%

Hierarchical Nanomanufacturing: From Shaped Zeolite Nanoparticles to High‐Performance Separation Membranes

2007

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Despite more than a decade of intense research on the high-resolution selectivity of thin zeolite films as alternatives to energy-intensive industrial separations, membranes consisting of intergrown, oriented zeolite crystals have fallen short of gaining wide commercial application. Factors including poor performance, high cost, and difficulties in scale up have contributed to this, and have also stunted their application in other niche markets. Until recently, rational design of these materials was limited because of the elusive mechanism of zeolite growth, and forced more empirical approaches. New understanding of zeolite growth along with recent advances in the molecular engineering of crystal microstructure and morphology, assembly of crystal monolayers, and synthesis of ordered films constitute a strong foundation for meeting stringent industrial demands in the future. Together with new processing capabilities, such a foundation should make it possible to synthesize commercially viable zeolite membranes through hierarchical approaches. Such advances open exciting prospects beyond the realm of separations for assembly of novel and complex functional materials including molecular sensors, mechanically stable dielectrics, and novel reaction-diffusion devices.

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Section: Nucleation and Growth: Historical And Current Perspectivesmentioning

confidence: 99%

Hierarchical Nanomanufacturing: From Shaped Zeolite Nanoparticles to High‐Performance Separation Membranes

2007

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“…Apparently, the spontaneous self-assembly process can lead to a decrease of Gibbs free energy (ÁG < 0) [18], accompanied with the high ordering of aragonite nanoparticles, as validated by TEM observation [18,25]. In this regard, it seems to be counterintuitive that spontaneous self-assembly reaction should be towards disordering (entropy increase based on the third law of thermodynamics).…”

mentioning

confidence: 93%

Order-Disorder Transition of Aragonite Nanoparticles in Nacre

Huang

2012

Phys. Rev. Lett.

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“…[14][15][16][17][18] Biominerals have inspired novel bottom-up approaches to the development of functional materials. The morphology, crystallographic orientation, incorporated organic molecules, and emergent properties of carbonate-based biominerals have been demonstrated in previous reports; typical examples of these biominerals are the nacreous layers of seashells, [19][20][21][22][23][24][25][26][27][28][29][30][31] the sponge skeletons of echinoderms, [19,[32][33][34][35][36][37][38][39][40][41][42] corals, [43] and eggshells. [44][45][46] These superstructures give rise to questions such as, Why do various curved morphologies emerge from the same combination of calcium carbonate and biopolymers?…”

Section: Introductionmentioning

confidence: 99%

Bridged Nanocrystals in Biominerals and Their Biomimetics: Classical Yet Modern Crystal Growth on the Nanoscale

Oaki¹,

Kotachi²,

Miura³

et al. 2006

Adv Funct Materials

240

230

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We demonstrate nanoscale architectures in real biominerals and their biomimetics. Mimicking biomineralization, that is, crystal design in association with organic molecules, has been demonstrated in recent years. Although the macroscopic morphologies in real biominerals and biomimetics have been extensively studied, the nanoscopic structures in terms of the crystal growth are still not fully understood. We show that both materials form oriented architectures of bridged nanocrystals with incorporated organic polymers. The growth of nanocrystals by association with polymers is a significant step for the understanding and developing of crystal growth. The strategy could be applied to various systems in nanoscale crystal growth leading to functional materials.

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Highly oriented aragonite nanocrystal–biopolymer composites in an aragonite brick of the nacreous layer of Pinctada fucata

Abstract: 13C CP/MAS NMR and FE/TEM measurements of the aragonite brick of the nacreous layer of Pinctada fucata indicate that it assembles with highly oriented aragonite nanocrystals, which are regulated by biopolymers.

Cited by 92 publications

References 9 publications

Hierarchical Nanomanufacturing: From Shaped Zeolite Nanoparticles to High‐Performance Separation Membranes

Hierarchical Nanomanufacturing: From Shaped Zeolite Nanoparticles to High‐Performance Separation Membranes

Order-Disorder Transition of Aragonite Nanoparticles in Nacre

Bridged Nanocrystals in Biominerals and Their Biomimetics: Classical Yet Modern Crystal Growth on the Nanoscale

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