A spectroscopic study to assess the photogeneration of singlet oxygen by graphene oxide
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Otros documentos de la autoría: Felip-León, Carles; Puche, Marta; Miravet, Juan; Galindo, Francisco; Feliz, Marta
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INVESTIGACIONMetadatos
Título
A spectroscopic study to assess the photogeneration of singlet oxygen by graphene oxideFecha de publicación
2019Editor
ElsevierISSN
0167-577X; 1873-4979Cita bibliográfica
FELIP-LEÓN, Carles, et al. A spectroscopic study to assess the photogeneration of singlet oxygen by graphene oxide. Materials Letters, 2019, vol. 251, p. 45-51.Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
https://www.sciencedirect.com/science/article/pii/S0167577X19307001Versión
info:eu-repo/semantics/submittedVersionPalabras clave / Materias
Resumen
The photogeneration of singlet oxygen (1
O2) during short irradiation times of graphene oxide (GO) is
assessed under visible light with soft irradiation conditions either directly monitoring the phosphorescence ... [+]
The photogeneration of singlet oxygen (1
O2) during short irradiation times of graphene oxide (GO) is
assessed under visible light with soft irradiation conditions either directly monitoring the phosphorescence emission of 1
O2 at ca. 1275 nm, or indirectly by means of the fluorescent probe 9,10-anthracene
diyl-bis(methylene)dimalonic acid (ABDA). Results obtained using both methodologies lead to the conclusion that 1
O2 generation is negligible under our experimental conditions. In the case of using ABDA
very small emission changes were recorded, which could be attributed to other side reactions. Special
care should be taken when using this spectroscopic probe to assess the generation of 1
O2, since ABDA
and related probes based on the reactivity of the anthracene fluorophore can also detect electron transfer
processes. This kind of approaches have been less explored in the field of Materials Science at the nanoscale, and we believe that the knowledge on the lack of generation of 1
O2 by irradiated GO is informative
and useful, especially for the assessment of the environmental and biological toxicity of nanomaterials
based on GO. [-]
Publicado en
Materials Letters, Volume 251, 15 September 2019.Proyecto de investigación
CTQ2015-71004-R ; P1.1B2015-76 ; SEV-2016-0683 ; I-Link1063Derechos de acceso
0167-577X/© 2019 Elsevier B.V. All rights reserved.
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info:eu-repo/semantics/openAccess
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info:eu-repo/semantics/openAccess
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