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Houard F, Cucinotta G, Guizouarn T, Suffren Y, Calvez G, Daiguebonne C, Guillou O, Artzner F, Mannini M, Bernot K. Metallogels: a novel approach for the nanostructuration of single-chain magnets. MATERIALS HORIZONS 2023; 10:547-555. [PMID: 36426997 DOI: 10.1039/d2mh01158a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
In this study we demonstrate that single-chain magnets (SCMs) can be assembled in gel phase and transferred intact on surface. We take advantage of a family of SCMs based on TbIII ions and nitronyl-nitroxides radicals functionalized with short alkyl chains known to form crystalline supramolecular nanotubes interacting with heptane acting as crystallizing solvent. When the radicals are functionalized with long aliphatic chains a robust gel is formed with similar structural and functional properties respect to its crystalline parent. Indeed, a small-angle X-ray scattering (SAXS) study unambiguously demonstrates that the gel is made of supramolecular nanotubes: the high stability of the gel allows the determination from SAXS data of precise nanotube metrics such as diameter, helical pitch and monoclinic cell of the folded 2D crystal lattice along the tube direction. Additionally, static and dynamic magnetic investigations show the persistence of the SCM behavior in the metallogel. Last, on-surface gelation provides thick films as well as sub-monolayer deposits of supramolecular nanotubes on surface as evidenced by atomic force microscopy (AFM) observations. This paves the road toward magnetic materials and devices made of SCMs profiting of their isolation on surface as individual chains.
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Affiliation(s)
- Felix Houard
- Univ Rennes, INSA Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226, Université de Rennes 1, F-35000 Rennes, France.
| | - Guiseppe Cucinotta
- Dipartimento di Chimica "Ugo Schiff" (DICUS), Università degli Studi di Firenze, INSTM Research Unit of Firenze, Via della Lastruccia n.3-13, 50019 Sesto Fiorentino, FI, Italy.
| | - Thierry Guizouarn
- Univ Rennes, INSA Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226, Université de Rennes 1, F-35000 Rennes, France.
| | - Yan Suffren
- Univ Rennes, INSA Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226, Université de Rennes 1, F-35000 Rennes, France.
| | - Guillaume Calvez
- Univ Rennes, INSA Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226, Université de Rennes 1, F-35000 Rennes, France.
| | - Carole Daiguebonne
- Univ Rennes, INSA Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226, Université de Rennes 1, F-35000 Rennes, France.
| | - Olivier Guillou
- Univ Rennes, INSA Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226, Université de Rennes 1, F-35000 Rennes, France.
| | - Franck Artzner
- CNRS, IPR (Institut de Physique de Rennes), UMR 6251, Université de Rennes 1, F-35000 Rennes, France
| | - Matteo Mannini
- Dipartimento di Chimica "Ugo Schiff" (DICUS), Università degli Studi di Firenze, INSTM Research Unit of Firenze, Via della Lastruccia n.3-13, 50019 Sesto Fiorentino, FI, Italy.
| | - Kevin Bernot
- Univ Rennes, INSA Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226, Université de Rennes 1, F-35000 Rennes, France.
- Institut Universitaire de France, 1 rue Descartes, 75005, Paris, France
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