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Bacteriophage‐Templated Assembly of Magnetic Nanoparticles and Their Actuation Potential
Author(s) -
OlszewskaWiddrat Agata,
Bennet Mathieu,
Mickoleit Frank,
Widdrat Marc,
Tarabout Christophe,
Reichel Victoria,
Arndt Katja,
Schüler Dirk,
Faivre Damien
Publication year - 2021
Publication title -
chemnanomat
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.947
H-Index - 32
ISSN - 2199-692X
DOI - 10.1002/cnma.202100053
Subject(s) - nanoparticle , nanotechnology , magnetic nanoparticles , nanomedicine , magnetotactic bacteria , magnetite nanoparticles , materials science , bacteriophage , magnetite , template , magnetosome , chemistry , biochemistry , escherichia coli , metallurgy , gene
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.