Dynamically Tunable Assemblies of Superparamagnetic Nanoparticles Stabilized with Liquid Crystal-like Ligands in Organic Thin Films.

Zuzanna Z Jańczuk, Agnieszka Jedrych, Sylwia Parzyszek, Anita Gardias, Jacek Szczytko, Michal Wojcik

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Article in Nanomaterials (Basel, Switzerland), 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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6 authors.

Zuzanna Z JańczukFaculty of Chemistry, University of Warsaw, 1 Pasteur Street, 02-093 Warsaw, Poland.

Agnieszka JedrychFaculty of Chemistry, University of Warsaw, 1 Pasteur Street, 02-093 Warsaw, Poland.ORCID 0000-0001-8430-1393

Sylwia ParzyszekFaculty of Chemistry, University of Warsaw, 1 Pasteur Street, 02-093 Warsaw, Poland.ORCID 0000-0003-1066-5738

Anita GardiasFaculty of Physics, University of Warsaw, 5 Pasteur Street, 02-093 Warsaw, Poland.

Jacek SzczytkoFaculty of Physics, University of Warsaw, 5 Pasteur Street, 02-093 Warsaw, Poland.ORCID 0000-0001-5150-2682

Michal WojcikFaculty of Chemistry, University of Warsaw, 1 Pasteur Street, 02-093 Warsaw, Poland.ORCID 0000-0003-3205-4698

Funding

National Science Center UMO-2019/35/B/ST5/04232

6 · The paper itself

Abstract

The process of arranging magnetic nanoparticles (MNPs) into long-range structures that can be dynamically and reversibly controlled is challenging, although interesting for emerging spintronic applications. Here, we report composites of MNPs in excess of LC-like ligands as promising materials for MNP-based technologies. The organic part ensures the assembly of MNP into long-range ordered phases as well as precise and temperature-reversible control over the arrangement. The dynamic changes are fully reversible, which we confirm using X-ray diffraction (XRD). This methodology allows for the precise control of the nanomaterial's structure in a thin film at different temperatures, translating to variable unit cell parameters. The composition of the materials (XPS, TGA), their structure (XRD), and magnetic properties (SQUID) were performed. Overall, this study confirms that LC-like materials provide the ability to dynamically control the magnetic nanoparticles in thin films, particularly the reversible control of their self-organization.

Indexed as

iron oxide nanoparticlesmagnetic nanoparticlesself-assembly

Identifiers

PMID37947752

DOI10.3390/nano13212908

PMCPMC10648093

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