Publikation: 3D Binary Mesocrystals from Anisotropic Nanoparticles
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Binary mesocrystals offer the combination of nanocrystal properties in an ordered superstructure. Here, we demonstrate the simultaneous self-assembly of platinum and iron oxide nanocubes into micrometer-sized 3D mesocrystals using the gas-phase diffusion technique. By the addition of minor amounts of a secondary particle type tailored to nearly identical size, shape and surface chemistry, we were able to promote a random incorporation of foreign particles into a self-assembling host lattice. The random distribution of the binary particle types on the surface and within its bulk has been visualized using advanced transmission and scanning electron microscopy techniques. The 20-40 μm sized binary mesocrystals have been further characterized through wide and small angle scattering techniques to reveal a long-range ordering on the atomic scale throughout the crystal while showing clear evidence that the material consists of individual building blocks. Through careful adjustments of the crystallization parameters, we could further obtain a reverse superstructure, where incorporated particles and host lattice switch roles.
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JENEWEIN, Christian, Jonathan Thomas AVARO, Christian APPEL, Marianne LIEBI, Helmut CÖLFEN, 2022. 3D Binary Mesocrystals from Anisotropic Nanoparticles. In: Angewandte Chemie International Edition. Wiley. 2022, 61(2), e202112461. ISSN 1433-7851. eISSN 1521-3773. Verfügbar unter: doi: 10.1002/anie.202112461BibTex
@article{Jenewein2022-01-10Binar-55693, year={2022}, doi={10.1002/anie.202112461}, title={3D Binary Mesocrystals from Anisotropic Nanoparticles}, number={2}, volume={61}, issn={1433-7851}, journal={Angewandte Chemie International Edition}, author={Jenewein, Christian and Avaro, Jonathan Thomas and Appel, Christian and Liebi, Marianne and Cölfen, Helmut}, note={Article Number: e202112461} }
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