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Polymer-Induced Alignment ofdl-Alanine Nanocrystals to Crystalline Mesostructures

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2005

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Wohlrab, Sebastian
Pinna, Nicola
Antonietti, Markus

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https://doi.org/10.1002/chem.200400420
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Chemistry - A European Journal. 2005, 11(10), pp. 2903-2913. ISSN 0947-6539. eISSN 1521-3765. Available under: doi: 10.1002/chem.200400420

Zusammenfassung

Crystallization of DL-alanine by cooling of a supersaturated solution in the presence of a chiral double-hydrophilic block copolymer poly(ethylene glycol)-block-poly(ethylene imine)-S-isobutyric acid (PEG4700-PEI1200-S-iBAc) yields crystal superstructures with an astonishing morphology. Although analysis by light microscopy reveals these crystals to be apparently well facetted, electron microscopy shows that they consist of three-dimensionally, well-aligned nanocrystals that are scaffolded to a so-called mesocrystal. This mesocrystal is formed by polymer-mediated structuration, and provides evidence for the importance of mesoscopic events in a typical crystallization process.

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ISO 690WOHLRAB, Sebastian, Nicola PINNA, Markus ANTONIETTI, Helmut CÖLFEN, 2005. Polymer-Induced Alignment ofdl-Alanine Nanocrystals to Crystalline Mesostructures. In: Chemistry - A European Journal. 2005, 11(10), pp. 2903-2913. ISSN 0947-6539. eISSN 1521-3765. Available under: doi: 10.1002/chem.200400420
BibTex
@article{Wohlrab2005Polym-40410,
  year={2005},
  doi={10.1002/chem.200400420},
  title={Polymer-Induced Alignment ofdl-Alanine Nanocrystals to Crystalline Mesostructures},
  number={10},
  volume={11},
  issn={0947-6539},
  journal={Chemistry - A European Journal},
  pages={2903--2913},
  author={Wohlrab, Sebastian and Pinna, Nicola and Antonietti, Markus and Cölfen, Helmut}
}
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