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Bacteriophage‐Templated Assembly of Magnetic Nanoparticles and Their Actuation Potential

Abstract : Magnetic chains are of fundamental and technological interest. However, 1D assemblies of magnetic nanoparticles are only metastable such that their controlled organization requires the use of templates. Bacteriophages are human-inoffensive viruses with a filamentous morphology that have been shown to exhibit great potential in materials research. Here, we thus utilized the M13 phage as a model for the formation of actuated magnetite nanoparticle superstructures. First, we built a sperm-like ensemble by covalently attaching magnetic nanoparticles to the head of the phage. Second, chain-like assemblies are obtained based on the electrostatic interactions between positively-charged magnetite nanoparticles attached to the negatively-charged phage surface. The nanoparticles-phages assembly is steered by external magnetic fields. We anticipate such materials can find applications in nanotechnology or nanomedicine.
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https://hal-amu.archives-ouvertes.fr/hal-03296301
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Submitted on : Friday, July 23, 2021 - 9:28:44 AM
Last modification on : Tuesday, October 18, 2022 - 9:30:07 AM
Long-term archiving on: : Sunday, October 24, 2021 - 6:11:14 PM

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Agata Olszewska‐widdrat, Mathieu Bennet, Frank Mickoleit, Marc Widdrat, Christophe Tarabout, et al.. Bacteriophage‐Templated Assembly of Magnetic Nanoparticles and Their Actuation Potential. ChemNanoMat, 2021, 7 (8), pp.942-949. ⟨10.1002/cnma.202100053⟩. ⟨hal-03296301⟩

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