Reactive nitrogen/oxygen species production by nitro/nitrosyl supramolecular ruthenium porphyrin complexes.

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dc.contributor.authorBarbosa, Marília Imaculada Frazão
dc.contributor.authorGimenez Parra, Gustavo
dc.contributor.authorCorrea, Rodrigo de Souza
dc.contributor.authorSampaio, Renato Neiva
dc.contributor.authorMagno, Lais Nogueira
dc.contributor.authorSilva, Rodrigo Costa
dc.contributor.authorDoriguetto, Antônio Carlos
dc.contributor.authorEllena, Javier Alcides
dc.contributor.authorBarbosa Neto, Newton Martins
dc.contributor.authorBatista, Alzir Azevedo
dc.contributor.authorGonçalves, Pablo José
dc.date.accessioned2018-03-14T13:15:07Z
dc.date.available2018-03-14T13:15:07Z
dc.date.issued2017
dc.description.abstractThis manuscript reports on new nitro/nitrosyl Ru-based complexes, which were synthesized with the purpose of using them as precursors to obtain supramolecular ruthenium porphyrin species ({TPyP[Ru (NO2)(5,50-Mebipy)2]4}(PF6)4) and ({TPyP[Ru(NO)(5,50-Mebipy)2]4}(PF6)12). The photochemical and photophysical properties of these porphyrin species were investigated. Results show that the complex containing nitrite is able to produce NO by homolytic O—NO cleavage (FPPh NO = 0.05) while the {TPyP[Ru (NO)(5,50-Mebipy)2]4}(PF6)12 does it by direct labilization (FPPh NO = 0.53) of the Ru NO bond. Furthermore, a triplet quantum yield of 0.09 and 0.27 was observed for complexes containing nitrite and nitric oxide, respectively. The reactive oxygen species quantum yield for the complex {TPyP[Ru(NO) (5,50-Mebipy)2]4}(PF6)12 (0.78) is consistent with the sum of quantum yields NO release (0.53) and triplet state (0.27), which suggests that both processes participate in the formation of the reactive species. Our results show that combining these characteristics, NO production and triplet states, on the same platform could induce a synergic effect, leading to a considerable improvement in the photodynamic action of these complexes.pt_BR
dc.identifier.citationBARBOSA, M. I. F. et al. Reactive nitrogen/oxygen species production by nitro/nitrosyl supramolecular ruthenium porphyrin complexes Journal of Photochemistry and Photobiology. A, Chemistry, v. 338, p. 152-160, abr. 2017. Disponível em: <http://www.sciencedirect.com/science/article/pii/S1010603016309406>. Acesso em: 15 set. 2017.pt_BR
dc.identifier.doihttps://doi.org/10.1016/j.jphotochem.2017.01.028
dc.identifier.issn 1010-6030
dc.identifier.urihttp://www.repositorio.ufop.br/handle/123456789/9630
dc.language.isoen_USpt_BR
dc.rightsabertopt_BR
dc.rights.licenseO periódico Journal of Photochemistry and Photobiology A: Chemistry concede permissão para depósito deste artigo no Repositório Institucional da UFOP. Número da licença: 4211380029105.pt_BR
dc.subjectPhotoreleasept_BR
dc.subjectTriplet statespt_BR
dc.subjectPhotophysical propertiespt_BR
dc.titleReactive nitrogen/oxygen species production by nitro/nitrosyl supramolecular ruthenium porphyrin complexes.pt_BR
dc.typeArtigo publicado em periodicopt_BR
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