Artículo
Interfacial Reactions of Tetraphenylporphyrin with Cobalt-Oxide Thin Films
Wechsler, Daniel; Fernández, Cynthia Carolina
; Tariq, Quratulain; Tsud, Nataliya; Prince, Kevin C.; Williams, Federico José
; Steinrück, Hans Peter; Lytken, Ole
Fecha de publicación:
10/2019
Editorial:
Wiley VCH Verlag
Revista:
Chemistry- A European Journal
ISSN:
0947-6539
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
We have studied the adsorption and interfacial reactions of 2H-tetraphenylporphyrin (2HTPP) with cobalt-terminated Co3O4(111) and oxygen-terminated CoO(111) thin films using synchrotron-radiation X-ray photoelectron spectroscopy. Already at 275 K, we find evidence for the formation of a metalated species, most likely CoTPP, on both surfaces. The degree of self-metalation increases with temperature on both surfaces until 475 K, where the metalation is almost complete. At 575 K the porphyrin coverage decreases drastically on the reducible cobalt-terminated Co3O4(111) surface, while higher temperatures are needed on the non-reducible oxygen-terminated CoO(111). The low temperature self-metalation is similar to that observed on MgO(100) surfaces, but drastically different from that observed on TiO2(110), where no self-metalation is observed at room temperature.
Palabras clave:
ION EXCHANGE
,
METALATION
,
OXIDE SURFACES
,
PORPHYRINS
,
PROTONATION
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(INQUIMAE)
Articulos de INST.D/QUIM FIS D/L MATERIALES MEDIOAMB Y ENERGIA
Articulos de INST.D/QUIM FIS D/L MATERIALES MEDIOAMB Y ENERGIA
Citación
Wechsler, Daniel; Fernández, Cynthia Carolina; Tariq, Quratulain; Tsud, Nataliya; Prince, Kevin C.; et al.; Interfacial Reactions of Tetraphenylporphyrin with Cobalt-Oxide Thin Films; Wiley VCH Verlag; Chemistry- A European Journal; 25; 57; 10-2019; 13197-13201
Compartir
Altmétricas