Interfacial Reactions of Tetraphenylporphyrin with Cobalt-Oxide Thin Films

Wechsler D, Fernandez CC, Tariq Q, Tsud N, Prince KC, Williams FJ, Steinrück HP, Lytken O (2019)

Publication Type: Journal article

Publication year: 2019

Journal

DOI: 10.1002/chem.201902680

Abstract

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.

Authors with CRIS profile

Involved external institutions

Universidad de Buenos Aires (UBA) / University of Buenos Aires Argentina (AR) Elettra Sincrotrone Trieste S.C.p.A. Italy (IT)

How to cite

APA:

Wechsler, D., Fernandez, C.C., Tariq, Q., Tsud, N., Prince, K.C., Williams, F.J.,... Lytken, O. (2019). Interfacial Reactions of Tetraphenylporphyrin with Cobalt-Oxide Thin Films. Chemistry - A European Journal. https://dx.doi.org/10.1002/chem.201902680

MLA:

Wechsler, Daniel, et al. "Interfacial Reactions of Tetraphenylporphyrin with Cobalt-Oxide Thin Films." Chemistry - A European Journal (2019).

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