Fabrication of EuF3-Mesocrystals in a Gel Matrix

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2010
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Lausser, Christine
Kumke, Michael U.
Antonietti, Markus
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Zeitschrift für anorganische und allgemeine Chemie. 2010, 636(11), pp. 1925-1930. eISSN 0044-2313. Available under: doi: 10.1002/zaac.201000098
Zusammenfassung

Europium(III) fluoride mesocrystals were synthesised in an organic matrix. This matrix is a gel formed by Eu3+ ions and a polycarboxylate/sulfonate copolymer, ACUSOL 588G. In the gel phase, the local amount of europium ions is very high since Eu3+ acts as a crosslinker, and crystallisation occurs upon addition of F . Nucleated seed crystals in the gel phase grow by further ion attachment and form mesocrystals by mutual orientation of the EuF3 particles in the gel. We propose a dipole field as reason for this alignment and that the dipolar character of the particles originates from adsorption of the polyelectrolyte on charged crystal faces.

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540 Chemie
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Mesocrystals, Non-classical crystallisation, Europium, Fluorine, Crystal growth
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ISO 690LAUSSER, Christine, Michael U. KUMKE, Markus ANTONIETTI, Helmut CÖLFEN, 2010. Fabrication of EuF3-Mesocrystals in a Gel Matrix. In: Zeitschrift für anorganische und allgemeine Chemie. 2010, 636(11), pp. 1925-1930. eISSN 0044-2313. Available under: doi: 10.1002/zaac.201000098
BibTex
@article{Lausser2010Fabri-9826,
  year={2010},
  doi={10.1002/zaac.201000098},
  title={Fabrication of EuF3-Mesocrystals in a Gel Matrix},
  number={11},
  volume={636},
  journal={Zeitschrift für anorganische und allgemeine Chemie},
  pages={1925--1930},
  author={Lausser, Christine and Kumke, Michael U. and Antonietti, Markus and Cölfen, Helmut}
}
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    <dcterms:abstract xml:lang="eng">Europium(III) fluoride mesocrystals were synthesised in an organic matrix. This matrix is a gel formed by Eu3+ ions and a polycarboxylate/sulfonate copolymer, ACUSOL 588G. In the gel phase, the local amount of europium ions is very high since Eu3+ acts as a crosslinker, and crystallisation occurs upon addition of F . Nucleated seed crystals in the gel phase grow by further ion attachment and form mesocrystals by mutual orientation of the EuF3 particles in the gel. We propose a dipole field as reason for this alignment and that the dipolar character of the particles originates from adsorption of the polyelectrolyte on charged crystal faces.</dcterms:abstract>
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