Appel, Markus ; Frick, Bernhard ; Ivanov, Alexandre ; Elbert, Johannes ; Rehahn, Matthias ; Gallei, Markus ; Spehr, Tinka Luise ; Stühn, Bernd (2023)
Vibrational spectra of ferrocene, ferrocene-containing polymers and their oxidized compounds.
In: Journal of Physics: Conference Series, 2014, 554 (1)
doi: 10.26083/tuprints-00020835
Artikel, Zweitveröffentlichung, Verlagsversion
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Kurzbeschreibung (Abstract)
Ferrocene-containing polymers are an important member in the class of redox- responsive polymers, changing e.g. their solubility or conformation upon external stimuli. We present a study of their vibrational spectra using inelastic neutron scattering, focusing on the central building block of these polymers, the organometallic ferrocene complex. The vibrational modes of a bulk ferrocene sample are compared to those of poly(vinylferrocene), poly(ferrocenyldimethylsilane) and poly(ferrocenylmethylsilane). In the former polymer, the ferrocene complex is laterally attached to the polymer chain and the vibrational spectrum shows a slight shift and broadening of the fingerprint modes in the range of 100-800 cm⁻¹ except for the ring-metal-ring stretching mode which was not detectable anymore. The latter two polymers, where the ferrocene complex is part of the polymer backbone, exhibit larger differences to the vibrational spectrum of bulk ferrocene. Moreover, several contributions to the spectra caused by methyl groups in these polymers could be identified. In order to study the influence of oxidation on ferrocene and redox-responsive polymers, we investigated the ionic compound ferrocenium triiodide and oxidized poly(vinylferrocene). It is observed that the weakening of the η⁵-complex bond by a missing electron leads to a significant shift of the fingerprint modes to lower frequencies.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2023 |
| Autor(en): | Appel, Markus ; Frick, Bernhard ; Ivanov, Alexandre ; Elbert, Johannes ; Rehahn, Matthias ; Gallei, Markus ; Spehr, Tinka Luise ; Stühn, Bernd |
| Art des Eintrags: | Zweitveröffentlichung |
| Titel: | Vibrational spectra of ferrocene, ferrocene-containing polymers and their oxidized compounds |
| Sprache: | Englisch |
| Publikationsjahr: | 21 November 2023 |
| Ort: | Darmstadt |
| Publikationsdatum der Erstveröffentlichung: | 2014 |
| Ort der Erstveröffentlichung: | Bristol |
| Verlag: | IOP Publishing |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of Physics: Conference Series |
| Jahrgang/Volume einer Zeitschrift: | 554 |
| (Heft-)Nummer: | 1 |
| Kollation: | 8 Seiten |
| DOI: | 10.26083/tuprints-00020835 |
| URL / URN: | https://tuprints.ulb.tu-darmstadt.de/20835 |
| Zugehörige Links: | |
| Herkunft: | Zweitveröffentlichung DeepGreen |
| Kurzbeschreibung (Abstract): | Ferrocene-containing polymers are an important member in the class of redox- responsive polymers, changing e.g. their solubility or conformation upon external stimuli. We present a study of their vibrational spectra using inelastic neutron scattering, focusing on the central building block of these polymers, the organometallic ferrocene complex. The vibrational modes of a bulk ferrocene sample are compared to those of poly(vinylferrocene), poly(ferrocenyldimethylsilane) and poly(ferrocenylmethylsilane). In the former polymer, the ferrocene complex is laterally attached to the polymer chain and the vibrational spectrum shows a slight shift and broadening of the fingerprint modes in the range of 100-800 cm⁻¹ except for the ring-metal-ring stretching mode which was not detectable anymore. The latter two polymers, where the ferrocene complex is part of the polymer backbone, exhibit larger differences to the vibrational spectrum of bulk ferrocene. Moreover, several contributions to the spectra caused by methyl groups in these polymers could be identified. In order to study the influence of oxidation on ferrocene and redox-responsive polymers, we investigated the ionic compound ferrocenium triiodide and oxidized poly(vinylferrocene). It is observed that the weakening of the η⁵-complex bond by a missing electron leads to a significant shift of the fingerprint modes to lower frequencies. |
| Status: | Verlagsversion |
| URN: | urn:nbn:de:tuda-tuprints-208356 |
| Zusätzliche Informationen: | Dynamics of Molecules and Materials-II |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 500 Naturwissenschaften und Mathematik > 530 Physik 500 Naturwissenschaften und Mathematik > 540 Chemie 600 Technik, Medizin, angewandte Wissenschaften > 660 Technische Chemie |
| Fachbereich(e)/-gebiet(e): | 05 Fachbereich Physik 05 Fachbereich Physik > Institut für Physik Kondensierter Materie (IPKM) 07 Fachbereich Chemie 07 Fachbereich Chemie > Ernst-Berl-Institut > Fachgebiet Makromolekulare Chemie 07 Fachbereich Chemie > Ernst-Berl-Institut > Fachgebiet Technische Chemie |
| Hinterlegungsdatum: | 21 Nov 2023 10:22 |
| Letzte Änderung: | 22 Nov 2023 06:36 |
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- Vibrational spectra of ferrocene, ferrocene-containing polymers and their oxidized compounds. (deposited 21 Nov 2023 10:22) [Gegenwärtig angezeigt]
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