Publikation:

Magnetic Nanoparticle Chains in Gelatin Ferrogels : Bio-inspiration from Magnetotactic Bacteria

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Datum

2019

Autor:innen

Sturm, Sebastian
Wolf, Daniel
Vogel, Karin
Gratz, Micha
Faivre, Damien
Lubk, Axel
Büchner, Bernd

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URI (zitierfähiger Link)
http://nbn-resolving.de/urn:nbn:de:bsz:352-2-1kiynqt4m98wq3
DOI (zitierfähiger Link)
https://doi.org/10.1002/adfm.201905996
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CC BY 4.0

Angaben zur Forschungsförderung

European Union (EU): 715620

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Open Access-Veröffentlichung
Open Access Hybrid

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Chemie: Publikationen
Core Facility der Universität Konstanz

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Published

Erschienen in

Advanced Functional Materials. 2019, 7(45), 1905996. ISSN 1616-301X. eISSN 1616-3028. Available under: doi: 10.1002/adfm.201905996

Zusammenfassung

Inspired by chains of ferrimagnetic nanocrystals (NCs) in magnetotactic bacteria (MTB), the synthesis and detailed characterization of ferrimagnetic magnetite NC chain‐like assemblies is reported. An easy green synthesis route in a thermoreversible gelatin hydrogel matrix is used. The structure of these magnetite chains prepared with and without gelatin is characterized by means of transmission electron microscopy, including electron tomography (ET). These structures indeed bear resemblance to the magnetite assemblies found in MTB, known for their mechanical flexibility and outstanding magnetic properties and known to crystallographically align their magnetite NCs along the strongest <111> magnetization easy axis. Using electron holography (EH) and angular dependent magnetic measurements, the magnetic interaction between the NCs and the generation of a magnetically anisotropic material can be shown. The electro‐ and magnetostatic modeling demonstrates that in order to precisely determine the magnetization (by means of EH) inside chain‐like NCs assemblies, their exact shape, arrangement and stray‐fields have to be considered (ideally obtained using ET).

Zusammenfassung in einer weiteren Sprache

Fachgebiet (DDC)
540 Chemie

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ISO 690STURM, Sebastian, Maria SIGLREITMEIER, Daniel WOLF, Karin VOGEL, Micha GRATZ, Damien FAIVRE, Axel LUBK, Bernd BÜCHNER, Elena V. STURM, Helmut CÖLFEN, 2019. Magnetic Nanoparticle Chains in Gelatin Ferrogels : Bio-inspiration from Magnetotactic Bacteria. In: Advanced Functional Materials. 2019, 7(45), 1905996. ISSN 1616-301X. eISSN 1616-3028. Available under: doi: 10.1002/adfm.201905996
BibTex
@article{Sturm2019Magne-46694,
  year={2019},
  doi={10.1002/adfm.201905996},
  title={Magnetic Nanoparticle Chains in Gelatin Ferrogels : Bio-inspiration from Magnetotactic Bacteria},
  number={45},
  volume={7},
  issn={1616-301X},
  journal={Advanced Functional Materials},
  author={Sturm, Sebastian and Siglreitmeier, Maria and Wolf, Daniel and Vogel, Karin and Gratz, Micha and Faivre, Damien and Lubk, Axel and Büchner, Bernd and Sturm, Elena V. and Cölfen, Helmut},
  note={Article Number: 1905996}
}
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