Polyelectrolyte-Directed Nanoparticle Aggregation : Systematic Morphogenesis of Calcium Carbonate by Nonclassical Crystallization

Song, Rui-Qi; Cölfen, Helmut; Xu, An-Wu; Hartmann, Jürgen; Antonietti, Markus

Polyelectrolyte-Directed Nanoparticle Aggregation : Systematic Morphogenesis of Calcium Carbonate by Nonclassical Crystallization

Dateien

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Datum

2009

Autor:innen

Song, Rui-Qi

Cölfen, Helmut

Xu, An-Wu

Hartmann, Jürgen

Antonietti, Markus

DOI (zitierfähiger Link)

https://doi.org/10.1021/nn900377d

Sammlungen

Chemie

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

ACS Nano. 2009, 3(7), pp. 1966-1978. ISSN 1936-0851. eISSN 1936-086X. Available under: doi: 10.1021/nn900377d

Zusammenfassung

Besides the classical atom/ion/molecule based mechanism, nonclassical crystallization provides a nanoparticle-based crystallization pathway toward single crystals. However, there is a lack of experimentally established strategies for engineering a range of crystalline microstructures from common nanoparticles by nonclassical crystallization. We demonstrate that a commercial random copolymer polyelectrolyte poly(4-styrene sulfonate)-co-(maleic acid) (PSS-co-MA) considerably guides crystallization of calcium carbonate (CC) with a high versatility. The bioinspired nonclassical crystallization protocol yielded a series of calcite microstructures. Calcite single crystals obtained at low supersaturation show a pseudo-dodecahedral shape with curved faces, whereas increasing supersaturation generated calcite mesocrystals with pseudo-octahedral shapes and scalloped surfaces. Further increase of supersaturation induced the formation of polycrystalline multilayered and hollow spheres. In the initial growth stage of all these microstructures, amorphous CC nanoparticles formed as the early product. Remarkably, microparticles with minimal primitive (P)-surface were captured as the prominent intermediate indicative of liquidlike behavior. Moreover, nanogranular structures exist broadly in the as-synthesized crystals. These results demonstrate that the polyelectrolyte can effectively stabilize the amorphous CC nanoparticle precursors, impart control over the evolution from amorphous precursors via a liquid aggregate through P-surface intermediates to the final crystals, and thus allow the morphogenesis. Simple variation of calcium and polyeletrolyte concentrations enables a systematic control over the size and morphology of particles among pseudo-dodecahedra, pseudo-octahedra, multilayered spheres, and hollow spheres, which are expressed in a morphology diagram. A unifying nanoparticle aggregation formation mechanism was suggested to explain the morphogenesis by the combination of nonclassical crystallization and surface area minimization principles.

Fachgebiet (DDC)

540 Chemie

Zitieren

ISO 690

SONG, Rui-Qi, Helmut CÖLFEN, An-Wu XU, Jürgen HARTMANN, Markus ANTONIETTI, 2009. Polyelectrolyte-Directed Nanoparticle Aggregation : Systematic Morphogenesis of Calcium Carbonate by Nonclassical Crystallization. In: ACS Nano. 2009, 3(7), pp. 1966-1978. ISSN 1936-0851. eISSN 1936-086X. Available under: doi: 10.1021/nn900377d

BibTex

@article{Song2009-07-28Polye-40145,
  year={2009},
  doi={10.1021/nn900377d},
  title={Polyelectrolyte-Directed Nanoparticle Aggregation : Systematic Morphogenesis of Calcium Carbonate by Nonclassical Crystallization},
  number={7},
  volume={3},
  issn={1936-0851},
  journal={ACS Nano},
  pages={1966--1978},
  author={Song, Rui-Qi and Cölfen, Helmut and Xu, An-Wu and Hartmann, Jürgen and Antonietti, Markus}
}

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