Please use this identifier to cite or link to this item: http://elib.uni-stuttgart.de/handle/11682/15511
Authors: Martschin, Philipp
Atanasov, Vladimir
Thiele, Simon
Kerres, Jochen
Title: Synthesis and characterization of novel perfluoro aromatic side chain sulfonated PSU ionomers
Issue Date: 2024
metadata.ubs.publikation.typ: Zeitschriftenartikel
metadata.ubs.publikation.seiten: 492-497
metadata.ubs.publikation.source: ACS polymers Au 4 (2024), S. 492-497
URI: http://nbn-resolving.de/urn:nbn:de:bsz:93-opus-ds-155110
http://elib.uni-stuttgart.de/handle/11682/15511
ISSN: 2694-2453
Abstract: Polyethersulfone (PSU) as a commercially available polymer offers many different opportunities for functionalization for diverse fields of application, for example, electrophilic substitutions like sulfonation and bromination or nucleophilic reactions such as lithiation. This study presents three different polysulfone derivatives, first functionalized by a lithiation reaction, followed by a reaction with carbonyl compounds containing pentafluorophenyl groups. In the last step, the pentafluorophenyl moieties of the modified PSU were sulfonated by thiolation and subsequent oxidation to sulfonic acid groups. Those novel PSU derivatives were characterized by NMR, DSC, TGA, GPC, and titration. Based on these ionomers, we show the fabrication of pure and acid-base blend membranes with promising proton conductivities. These novel sulfonic acid groups containing materials are potentially promising candidates for membranes or ionomers in electrochemical applications such as proton exchange membrane fuel cells (PEMFCs), proton exchange membrane water electrolysis (PEMWEs), or redox flow batteries (RFBs).
Appears in Collections:04 Fakultät Energie-, Verfahrens- und Biotechnik

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