Elbert, Johannes ; Didzoleit, Haiko ; Fasel, Claudia ; Ionescu, Emanuel ; Riedel, Ralf ; Stühn, B. ; Gallei, Markus (2015)
Surface-Initiated Anionic Polymerization of [1]Silaferrocenophanes for the Preparation of Colloidal Preceramic Materials.
In: Macromolecular Rapid Communications, 36 (7)
doi: 10.1002/marc.201400581
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
A novel strategy for the preparation of poly(ferrocenylsilane) (PFS) immobilized on the surface of cross-linked polystyrene (PS) nanoparticles is reported. The ferrocene-containing core/shell architectures are shown to be excellent candidates as preceramic polymers yielding spherical ceramic materials consisting of iron silicide (Fe3Si) and metallic iron after thermal treatment. For this purpose, dimethyl- and hydromethyl[1]silaferrocenophane monomers are polymerized by surface-initiated ring-opening polymerization upon taking advantage of residual vinylic moieties at the PS particle surface. A strategy for selective chain growth from the particle surface is developed without the formation of free PFS homopolymer in solution. The grafted particles are characterized using transmission electron microscopy (TEM) and dynamic light scattering (DLS). These particles are excellent precursors for ceramics as studied by thermogravimetric analysis (TGA). The composition of the ceramics is studied using X-ray diffraction (XRD) measurements, while the morphology is probed by scanning electron microscopy (SEM) revealing the original spherical shape of the precursor particles. Obtained ceramic materials— predominantly based on iron silicides—show ferromagnetic behavior as investigated by superconducting quantum interference device (SQUID) magnetization measurements at different temperatures.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2015 |
| Autor(en): | Elbert, Johannes ; Didzoleit, Haiko ; Fasel, Claudia ; Ionescu, Emanuel ; Riedel, Ralf ; Stühn, B. ; Gallei, Markus |
| Art des Eintrags: | Bibliographie |
| Titel: | Surface-Initiated Anionic Polymerization of [1]Silaferrocenophanes for the Preparation of Colloidal Preceramic Materials |
| Sprache: | Englisch |
| Publikationsjahr: | April 2015 |
| Verlag: | WILEY-VCH Verlag GmbH & Co. KGaA |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Macromolecular Rapid Communications |
| Jahrgang/Volume einer Zeitschrift: | 36 |
| (Heft-)Nummer: | 7 |
| DOI: | 10.1002/marc.201400581 |
| Kurzbeschreibung (Abstract): | A novel strategy for the preparation of poly(ferrocenylsilane) (PFS) immobilized on the surface of cross-linked polystyrene (PS) nanoparticles is reported. The ferrocene-containing core/shell architectures are shown to be excellent candidates as preceramic polymers yielding spherical ceramic materials consisting of iron silicide (Fe3Si) and metallic iron after thermal treatment. For this purpose, dimethyl- and hydromethyl[1]silaferrocenophane monomers are polymerized by surface-initiated ring-opening polymerization upon taking advantage of residual vinylic moieties at the PS particle surface. A strategy for selective chain growth from the particle surface is developed without the formation of free PFS homopolymer in solution. The grafted particles are characterized using transmission electron microscopy (TEM) and dynamic light scattering (DLS). These particles are excellent precursors for ceramics as studied by thermogravimetric analysis (TGA). The composition of the ceramics is studied using X-ray diffraction (XRD) measurements, while the morphology is probed by scanning electron microscopy (SEM) revealing the original spherical shape of the precursor particles. Obtained ceramic materials— predominantly based on iron silicides—show ferromagnetic behavior as investigated by superconducting quantum interference device (SQUID) magnetization measurements at different temperatures. |
| Freie Schlagworte: | anionic polymerizations, ceramic precursors, colloids, metallopolymers, stimuli-responsive polymers |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Disperse Feststoffe 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften |
| Hinterlegungsdatum: | 09 Apr 2015 10:27 |
| Letzte Änderung: | 09 Okt 2015 09:10 |
| PPN: | |
| Sponsoren: | The authors acknowledge the Landesoffensive zur Entwicklung Wissenschaftlich-Ökonomischer Exzellenz (LOEWE) of the State of Hesse through research initiative Soft Control for ongoing financial support. |
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