Electron Spin-Dependent Electrocatalysis for the Oxygen Reduction Reaction in a Chiro-Self-Assembled Iron Phthalocyanine Device

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dc.contributor.authorScarpetta-Pizo, Laura
dc.contributor.authorVenegas, Ricardo
dc.contributor.authorBarrias, Pablo
dc.contributor.authorMunoz-Becerra, Karina
dc.contributor.authorVilches-Labbe, Nayareth
dc.contributor.authorMura, Francisco
dc.contributor.authorMendez-Torres, Ana Maria
dc.contributor.authorRamirez-Tagle, Rodrigo
dc.contributor.authorToro-Labbe, Alejandro
dc.contributor.authorHevia, Samuel
dc.contributor.authorZagal, Jose H.
dc.contributor.authorOnate, Ruben
dc.contributor.authorAspee, Alexis
dc.contributor.authorPonce, Ingrid
dc.date.accessioned2025-01-20T17:22:42Z
dc.date.available2025-01-20T17:22:42Z
dc.date.issued2023
dc.description.abstractThe chiral-induced spin selectivity effect (CISS) is a breakthrough phenomenon that has revolutionized the field of electrocatalysis. We report the first study on the electron spin-dependent electrocatalysis for the oxygen reduction reaction, ORR, using iron phthalocyanine, FePc, a well-known molecular catalyst for this reaction. The FePc complex belongs to the non-precious catalysts group, whose active site, FeN4, emulates catalytic centers of biocatalysts such as Cytochrome c. This study presents an experimental platform involving FePc self-assembled to a gold electrode surface using chiral peptides (L and D enantiomers), i.e., chiro-self-assembled FePc systems (CSAFePc). The chiral peptides behave as spin filters axial ligands of the FePc. One of the main findings is that the peptides ' handedness and length in CSAFePc can optimize the kinetics and thermodynamic factors governing ORR. Moreover, the D-enantiomer promotes the highest electrocatalytic activity of FePc for ORR, shifting the onset potential up to 1.01 V vs. RHE in an alkaline medium, a potential close to the reversible potential of the O2/H2O couple. Therefore, this work has exciting implications for developing highly efficient and bioinspired catalysts, considering that, in biological organisms, biocatalysts that promote O2 reduction to water comprise L-enantiomers.
dc.description.abstractThe electrocatalytic activity of iron phthalocyanine (FePc) for the oxygen reduction reaction (ORR) was highly increased by promoting the chiral-induced spin selectivity effect on FePc axially coordinated by chiral-peptides (L and D enantiomers). By adjusting the peptides ' handedness and length (chiral C number), the kinetics and thermodynamic factors governing ORR were optimized for developing highly efficient catalysts.image
dc.fuente.origenWOS
dc.identifier.doi10.1002/anie.202315146
dc.identifier.eissn1521-3773
dc.identifier.issn1433-7851
dc.identifier.urihttps://doi.org/10.1002/anie.202315146
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/91489
dc.identifier.wosidWOS:001105956300001
dc.language.isoen
dc.revistaAngewandte chemie-international edition
dc.rightsacceso restringido
dc.subjectCISS Effect
dc.subjectChiral Peptides
dc.subjectIron Phthalocyanine
dc.subjectOxygen Reduction Reaction
dc.subjectSelf-Assembly Molecular Catalyst
dc.subject.ods03 Good Health and Well-being
dc.subject.odspa03 Salud y bienestar
dc.titleElectron Spin-Dependent Electrocatalysis for the Oxygen Reduction Reaction in a Chiro-Self-Assembled Iron Phthalocyanine Device
dc.typeartículo
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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