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Mimicking the Growth of a Pathologic Biomineral : Shape Development and Structures of Calcium Oxalate Dihydrate in the Presence of Polyacrylic Acid

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Datum

2012

Autor:innen

Thomas, Annu
Hochrein, Oliver
Carrillo-Cabrera, Wilder
Simon, Paul
Duchstein, Patrick
Zahn, Dirk
Kniep, Rüdiger

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https://doi.org/10.1002/chem.201102228
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Chemistry - A European Journal. 2012, 18(13), pp. 4000-4009. ISSN 0947-6539. eISSN 1521-3765. Available under: doi: 10.1002/chem.201102228

Zusammenfassung

The morphogenesis of calcium oxalate hydrates in aqueous solutions was investigated by varying the pH, oxalate concentration, and the concentration of the sodium salt of polyacrylate (PAA). With increasing amounts of PAA in solution, the shape of tetragonal calcium oxalate dihydrate (COD) changes from bipyramidal through elongated bipyramidal prisms to dumbbells and finally reverts to rodlike tetragonal bipyramidal prisms. PAA is incorporated into the prismatic zones of the growing COD crystals, thereby reducing the growth rate of the {100} faces along the <100> direction. Dumbbells start to develop through "non-crystallographic" branching from the prism faces and the formation of "multiple head" crystals. Adsorption of PAA on the rough surfaces of the splitting individuals supports the selection of new subindividuals and leads to the formation of core-shell patterns. The various shapes and structures of the biomimetic COD/PAA crystals and aggregates are closely related to the well-known "pathologic" individuals observed in the urine of patients with urinary disease (including urinary stones).

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Fachgebiet (DDC)
540 Chemie

Schlagwörter

biomineralization, calcium oxalates, crystal growth, electron microscopy, polyacrylates

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ISO 690THOMAS, Annu, Elena V. STURM, Oliver HOCHREIN, Wilder CARRILLO-CABRERA, Paul SIMON, Patrick DUCHSTEIN, Dirk ZAHN, Rüdiger KNIEP, 2012. Mimicking the Growth of a Pathologic Biomineral : Shape Development and Structures of Calcium Oxalate Dihydrate in the Presence of Polyacrylic Acid. In: Chemistry - A European Journal. 2012, 18(13), pp. 4000-4009. ISSN 0947-6539. eISSN 1521-3765. Available under: doi: 10.1002/chem.201102228
BibTex
@article{Thomas2012-03-26Mimic-44580,
  year={2012},
  doi={10.1002/chem.201102228},
  title={Mimicking the Growth of a Pathologic Biomineral : Shape Development and Structures of Calcium Oxalate Dihydrate in the Presence of Polyacrylic Acid},
  number={13},
  volume={18},
  issn={0947-6539},
  journal={Chemistry - A European Journal},
  pages={4000--4009},
  author={Thomas, Annu and Sturm, Elena V. and Hochrein, Oliver and Carrillo-Cabrera, Wilder and Simon, Paul and Duchstein, Patrick and Zahn, Dirk and Kniep, Rüdiger}
}
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