Artículo
Covalent Anchoring and Interfacial Reactions of Adsorbed Porphyrins on Rutile TiO2(110)
Wechsler, Daniel; Fernández, Cynthia Carolina
; Steinrück, Hans-Peter; Lytken, Ole; Williams, Federico José
Fecha de publicación:
03/2018
Editorial:
American Chemical Society
Revista:
Journal of Physical Chemistry C
ISSN:
1932-7447
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Adsorption of 5-monocarboxyphenyl-10,15,20-triphenylporphyrin (MCTPP) to rutile TiO2(110) at room temperature produces molecules on the surface covalently anchored through the carboxylate group, coadsorbed with hydroxyl groups. At elevated temperatures, the free-base porphyrin molecules metalate on the surface, forming what we expect to be titanyl (Ti=O) porphyrin. The reaction is strongly coverage dependent with lower coverages metalating at lower temperatures, possibly caused by flat-lying molecules at low coverages being in closer proximity to the surface. This is in contrast to the behavior when exposed to Zn2+ ions in solution, where the coverage dependency is much less pronounced.
Palabras clave:
COVALENT ANCHORING
,
PORPHYRINS
,
RUTILE
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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; Steinrück, Hans-Peter; Lytken, Ole; Williams, Federico José; Covalent Anchoring and Interfacial Reactions of Adsorbed Porphyrins on Rutile TiO2(110); American Chemical Society; Journal of Physical Chemistry C; 122; 8; 3-2018; 4480-4487
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