English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

Wettability of magnetite nanoparticles guides growth from stabilized amorphous ferrihydrite

MPS-Authors
/persons/resource/persons240556

Kuhrts,  Lucas
Damien Faivre, Biomaterialien, Max Planck Institute of Colloids and Interfaces, Max Planck Society;

Chevrier,  Daniel M.
Damien Faivre, Biomaterialien, Max Planck Institute of Colloids and Interfaces, Max Planck Society;

/persons/resource/persons228694

Späker,  Oliver
Wolfgang Wagermaier, Biomaterialien, Max Planck Institute of Colloids and Interfaces, Max Planck Society;

/persons/resource/persons220490

Egglseder,  Mathias
Damien Faivre, Biomaterialien, Max Planck Institute of Colloids and Interfaces, Max Planck Society;

/persons/resource/persons121123

Baumgartner,  Jens
Damien Faivre, Biomaterialien, Max Planck Institute of Colloids and Interfaces, Max Planck Society;

/persons/resource/persons121274

Faivre,  Damien
Damien Faivre, Biomaterialien, Max Planck Institute of Colloids and Interfaces, Max Planck Society;

External Resource
No external resources are shared
Fulltext (public)

Article.pdf
(Publisher version), 7MB

Supplementary Material (public)
There is no public supplementary material available
Citation

Kuhrts, L., Prévost, S., Chevrier, D. M., Pekker, P., Späker, O., Egglseder, M., et al. (2021). Wettability of magnetite nanoparticles guides growth from stabilized amorphous ferrihydrite. Journal of the American Chemical Society, 143(29), 10963-10969. doi:10.1021/jacs.1c02687.


Cite as: http://hdl.handle.net/21.11116/0000-0008-FA3A-E
Abstract
Crystal formation via amorphous precursors is a long-sought-after gateway to engineer nanoparticles with well-controlled size and morphology. Biomineralizing organisms, like magnetotactic bacteria, follow such a nonclassical crystallization pathway to produce magnetite nanoparticles with sophistication unmatched by synthetic efforts at ambient conditions. Here, using in situ small-angle X-ray scattering, we demonstrate how the addition of poly(arginine) in the synthetic formation of magnetite nanoparticles induces a biomineralization-reminiscent pathway. The addition of poly(arginine) stabilizes an amorphous ferrihydrite precursor, shifting the magnetite formation pathway from thermodynamic to kinetic control. Altering the energetic landscape of magnetite formation by catalyzing the pH-dependent precursor attachment, we tune magnetite nanoparticle size continuously, exceeding sizes observed in magnetotactic bacteria. This mechanistic shift we uncover here further allows for crystal morphology control by adjusting the pH-dependent interfacial interaction between liquidlike ferrihydrite and nascent magnetite nanoparticles, establishing a new strategy to control nanoparticle morphology. Synthesizing compact single crystals at wetting conditions and unique semicontinuous single-crystalline nanoparticles at dewetting conditions in combination with an improved control over magnetite crystallite size, we demonstrate the versatility of bio-inspired, kinetically controlled nanoparticle formation pathways.