Proton-conducting membranes for the artificial leaf

dc.contributor.advisorTovar, Günter E. M. (Prof.)
dc.contributor.authorBosson, Karell
dc.date.accessioned2023-07-24T13:18:00Z
dc.date.available2023-07-24T13:18:00Z
dc.date.issued2023de
dc.description.abstractWith the aim of producing proton conducting membranes with improved proton conductivity and mechanical properties, the poly(pentafluorostyrene)-b-(butyl acrylate) (PPFS-b-PBuA) system was investigated. The study mainly focuses on the influence of the forming polymer nanostructures on the conductivity properties of the membranes. A series of well-defined PPFS-b-PBuA block copolymers (BCPs) were synthesized via nitroxide-mediated controlled radical polymerization (NMP). Spontaneous self-assembly of the BCP element was induced via a targeted change in polymer composition. Moreover, by adjusting the molar composition via enrichment of one of the blocks after synthesis, controlled self-assembly of the BCPs was realized. This was done by combining the corresponding homopolymer with the block copolymer to form a polymer blend - one of the blocks mixed to the BCP. Forming such polymer blends expanded the range of available techniques for tailoring the morphology for desired applications. Sulfonation of BCPs for the preparation of proton-conducting membranes was carried out by a para-fluoro thiol "click" reaction using sodium 3-mercapto-1-propanesulfonate (SMPS). The accessibility of fluorine in the para position of the phenylene group of PPFS provides countless opportunities for polymer functionalization by nucleophilic substitution. After modification of BCP, the self-assembly ability was retained, and higher conductivities were obtained compared to random copolymers. In addition, complementary studies were conducted on the use of printing techniques for membrane upscaling and evaluation of their life cycle.en
dc.identifier.other1853518662
dc.identifier.urihttp://nbn-resolving.de/urn:nbn:de:bsz:93-opus-ds-133452de
dc.identifier.urihttp://elib.uni-stuttgart.de/handle/11682/13345
dc.identifier.urihttp://dx.doi.org/10.18419/opus-13326
dc.language.isoende
dc.relationinfo:eu-repo/grantAgreement/EC/H2020/765376de
dc.rightsinfo:eu-repo/semantics/openAccessde
dc.subject.ddc540de
dc.titleProton-conducting membranes for the artificial leafen
dc.typedoctoralThesisde
ubs.bemerkung.externCotutelle-Dissertation: Universität Stuttgart, Université de Pau et des Pays de l’Adourde
ubs.dateAccepted2022-09-13
ubs.fakultaetEnergie-, Verfahrens- und Biotechnikde
ubs.fakultaetFakultätsübergreifend / Sonstige Einrichtungde
ubs.institutInstitut für Chemische Verfahrenstechnikde
ubs.institutInstitut für Grenzflächenverfahrenstechnik und Plasmatechnologiede
ubs.institutFakultätsübergreifend / Sonstige Einrichtungde
ubs.publikation.seiten216de
ubs.publikation.typDissertationde
ubs.thesis.grantorEnergie-, Verfahrens- und Biotechnikde

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