{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"submitter":["Nemeth T"],"funding":["Swiss National Science Foundation"],"pagination":["15606-15616"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC9512017"],"repository":["biostudies-literature"],"omics_type":["Unknown"],"volume":["126(37)"],"pubmed_abstract":["Sulfonated aromatic hydrocarbon-based ionomers are potential constituents of next-generation polymer electrolyte fuel cells (PEFCs). Widespread application is currently limited due to their susceptibility to radical-initiated oxidative degradation that, among other intermediates, involves the formation of highly reactive aromatic cation radicals. The intermediates undergo chain cleavage (dealkylation/dearylation) and the loss of protogenic sulfonate groups, all leading to performance loss and eventual membrane failure. Laser flash photolysis experiments indicated that cation radicals can also be formed <i>via</i> direct electron ejection. We aim to establish the major degradation pathway of proton-exchange membranes (PEMs). To this end, we irradiated aqueous solutions of phenyl sulfonate-t"],"journal":["The journal of physical chemistry. C, Nanomaterials and interfaces"],"pubmed_title":["EPR Study on the Oxidative Degradation of Phenyl Sulfonates, Constituents of Aromatic Hydrocarbon-Based Proton-Exchange Fuel Cell Membranes."],"pmcid":["PMC9512017"],"funding_grant_id":["175493"],"pubmed_authors":["Nemeth T","Agrachev M","Nauser T","Jeschke G","Gubler L"],"additional_accession":[]},"is_claimable":false,"name":"EPR Study on the Oxidative Degradation of Phenyl Sulfonates, Constituents of Aromatic Hydrocarbon-Based Proton-Exchange Fuel Cell Membranes.","description":"Sulfonated aromatic hydrocarbon-based ionomers are potential constituents of next-generation polymer electrolyte fuel cells (PEFCs). Widespread application is currently limited due to their susceptibility to radical-initiated oxidative degradation that, among other intermediates, involves the formation of highly reactive aromatic cation radicals. The intermediates undergo chain cleavage (dealkylation/dearylation) and the loss of protogenic sulfonate groups, all leading to performance loss and eventual membrane failure. Laser flash photolysis experiments indicated that cation radicals can also be formed <i>via</i> direct electron ejection. We aim to establish the major degradation pathway of proton-exchange membranes (PEMs). To this end, we irradiated aqueous solutions of phenyl sulfonate-t","dates":{"release":"2022-01-01T00:00:00Z","publication":"2022 Sep","modification":"2026-05-28T02:14:52.802Z","creation":"2024-11-06T07:53:10.135Z"},"accession":"S-EPMC9512017","cross_references":{"pubmed":["36176316"],"doi":["10.1021/acs.jpcc.2c04566"]}}