Please use this identifier to cite or link to this item:
doi:10.22028/D291-40385
Title: | Self-Assembly of Polymer-Modified FePt Magnetic Nanoparticles and Block Copolymers |
Author(s): | Hartmann, Frank Bitsch, Martin Niebuur, Bart-Jan Koch, Marcus Kraus, Tobias Dietz, Christian Stark, Robert W. Everett, Christopher R. Müller-Buschbaum, Peter Janka, Oliver Gallei, Markus |
Language: | English |
Title: | Materials |
Volume: | 16 |
Issue: | 16 |
Publisher/Platform: | MDPI |
Year of Publication: | 2023 |
Free key words: | block copolymers self-assembly nanoparticles nanocomposites anionic polymerization |
DDC notations: | 500 Science |
Publikation type: | Journal Article |
Abstract: | The fabrication of nanocomposites containing magnetic nanoparticles is gaining interest as a model for application in small electronic devices. The self-assembly of block copolymers (BCPs) makes these materials ideal for use as a soft matrix to support the structural ordering of the nanoparticles. In this work, a high-molecular-weight polystyrene-b-poly(methyl methacrylate) block copolymer (PSb-PMMA) was synthesized through anionic polymerization. The influence of the addition of different ratios of PMMA-coated FePt nanoparticles (NPs) on the self-assembled morphology was investigated using transmission electron microscopy (TEM) and small-angle X-ray scattering (SAXS). The selfassembly of the NPs inside the PMMA phase at low particle concentrations was analyzed statistically, and the negative effect of higher particle ratios on the lamellar BCP morphology became visible. The placement of the NPs inside the PMMA phase was also compared to theoretical descriptions. The magnetic addressability of the FePt nanoparticles inside the nanocomposite films was finally analyzed using bimodal magnetic force microscopy and proved the magnetic nature of the nanoparticles inside the microphase-separated BCP films. |
DOI of the first publication: | 10.3390/ma16165503 |
URL of the first publication: | https://doi.org/10.3390/ma16165503 |
Link to this record: | urn:nbn:de:bsz:291--ds-403855 hdl:20.500.11880/36306 http://dx.doi.org/10.22028/D291-40385 |
ISSN: | 1996-1944 |
Date of registration: | 28-Aug-2023 |
Description of the related object: | Supplementary Materials |
Related object: | https://www.mdpi.com/article/10.3390/ma16165503/s1 |
Faculty: | NT - Naturwissenschaftlich- Technische Fakultät |
Department: | NT - Chemie |
Professorship: | NT - Prof. Dr. Markus Gallei NT - Prof. Dr. Tobias Kraus |
Collections: | SciDok - Der Wissenschaftsserver der Universität des Saarlandes |
Files for this record:
File | Description | Size | Format | |
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materials-16-05503-v2.pdf | 2,86 MB | Adobe PDF | View/Open |
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