Various Sizes and Shapes of Mixed-Anion Fe(NH2trz)3(BF4)2−x(SiF6)x/2@SiO2 Nanohybrid Particles Undergoing Spin Crossover Just Above Room Temperature
Spin crossover (SCO) iron (II) coordination compounds in the form of nanohybrid SCO@SiO<sub>2</sub> particles were prepared using a reverse micelles technique based on the TritonX-100/cyclohexane/water ternary system. Tetraethyl orthosilicate (TEOS) acts as precursor of both the SiF<sub>6</sub><sup>2-</sup> counter-anion and SiO<sub>2</sub> to obtain Fe(NH<sub>2</sub>trz)<sub>3</sub>(BF<sub>4</sub>)<sub>2-x</sub>(SiF<sub>6</sub>)<sub>x/2</sub>@SiO<sub>2</sub> nanoparticles with different sizes and morphologies while modifying the TEOS concentration and reaction time. The adjustable mixed-anion strategy leads to a range of quite scarce abrupt spin crossover behaviors with hysteresis just above room temperature (ca. 293 K), which is very promising for the integration of these materials into functional devices.
Authors
- Lionel Salmon (ORCID: https://orcid.org/0000-0002-8064-8960)
- Rafał Bielas (ORCID: https://orcid.org/0000-0002-5129-063X)
- Xinyu Yang (ORCID: https://orcid.org/0009-0008-3887-3575)
- Azzedine Bousseksou (ORCID: https://orcid.org/0000-0002-1619-532X)
- Vincent Collière
Institutions
- Centre National de la Recherche Scientifique (FR)
- Université Toulouse III - Paul Sabatier (FR)
- Université Fédérale de Toulouse Midi-Pyrénées (FR)
- Laboratoire de Chimie de Coordination (FR)
Publication Details
- Journal
- Nanomaterials
- Published
- 2025-01-09
- DOI
- https://doi.org/10.3390/nano15020090
- Primary Topic
- Magnetism in coordination complexes
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- China Scholarship Council