Unveiling the structure of polytetraruthenated nickel porphyrin by raman spectroelectrochemistry

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dc.creatorFerreira, Luís Marcos Cerdeira
dc.creatorGrasseschi, Daniel
dc.creatorSantos, Mauro Sérgio Ferreira
dc.creatorMartins, Paulo Roberto
dc.creatorFerreira, Luís Marcos Cerdeira
dc.creatorGutz, Ivano Gebhardt Rolf
dc.creatorFerreira, Ana Maria da Costa
dc.creatorAraki, Koiti
dc.creatorToma, Henrique Eisi
dc.creatorAngnes, Lucio
dc.date.accessioned2024-07-22T19:40:45Z
dc.date.available2024-07-22T19:40:45Z
dc.date.issued2015-03-26
dc.description.abstractThe structure of polytetraruthenated nickel porphyrin was unveiled for the first time by electrochemistry, Raman spectroelectrochemistry, and a hydroxyl radical trapping assay. The electrocatalytic active material, precipitated on the electrode surface after successive cycling of [NiTPyP{Ru(bipy)2Cl}4]4+ species in strong aqueous alkaline solution (pH 13), was found to be a peroxo-bridged coordination polymer. The electropolymerization process involves hydroxyl radicals (as confirmed by the characteristic set of DMPO/•OH adduct EPR peaks) as reaction intermediates, electrocatalytically generated in the 0.80–1.10 V range, that induce the formation of Ni–O–O–Ni coordination polymers, as evidenced by Raman spectroelectrochemistry and molecular modeling studies. The film growth is halted above 1.10 V due to the formation of oxygen gas bubbles.
dc.identifier.citationFERREIRA, Luís M. C. et al. Unveiling the structure of polytetraruthenated nickel porphyrin by raman spectroelectrochemistry. Langmuir, Washington, v. 31, n. 14, p. 4351-4360, 2015. DOI: 10.1021/acs.langmuir.5b00250. Disponível em: https://pubs.acs.org/doi/10.1021/acs.langmuir.5b00250. Acesso em: 5 jul. 2024.
dc.identifier.doi10.1021/acs.langmuir.5b00250
dc.identifier.issn0743-7463
dc.identifier.issne- 1520-5827
dc.identifier.urihttps://pubs.acs.org/doi/10.1021/acs.langmuir.5b00250
dc.language.isoeng
dc.publisher.countryEstados unidos
dc.publisher.departmentInstituto de Química - IQ (RMG)
dc.rightsAcesso Restrito
dc.titleUnveiling the structure of polytetraruthenated nickel porphyrin by raman spectroelectrochemistry
dc.typeArtigo

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