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Vibrational spectra of ferrocene, ferrocene-containing polymers and their oxidized compounds

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
Article, Secondary publication, Publisher's Version

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Item Type: Article
Type of entry: Secondary publication
Title: Vibrational spectra of ferrocene, ferrocene-containing polymers and their oxidized compounds
Language: English
Date: 21 November 2023
Place of Publication: Darmstadt
Year of primary publication: 2014
Place of primary publication: Bristol
Publisher: IOP Publishing
Journal or Publication Title: Journal of Physics: Conference Series
Volume of the journal: 554
Issue Number: 1
Collation: 8 Seiten
DOI: 10.26083/tuprints-00020835
Corresponding Links:
Origin: Secondary publication DeepGreen

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: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-208356
Additional Information:

Dynamics of Molecules and Materials-II

Classification DDC: 500 Science and mathematics > 530 Physics
500 Science and mathematics > 540 Chemistry
600 Technology, medicine, applied sciences > 660 Chemical engineering
Divisions: 05 Department of Physics > Institute for Condensed Matter Physics
07 Department of Chemistry > Ernst-Berl-Institut > Fachgebiet Makromolekulare Chemie
07 Department of Chemistry > Ernst-Berl-Institut > Fachgebiet Technische Chemie
Date Deposited: 21 Nov 2023 10:22
Last Modified: 08 Jan 2024 08:42
SWORD Depositor: Deep Green
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/20835
PPN: 514484608
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