Hungry Porphyrins: Protonation and Self-Metalation of Tetraphenylporphyrin on TiO2(110)-1 x 1

Köbl J, Wang T, Wang C, Drost M, TU F, Xu Q, Ju H, Wechsler D, Franke M, Pan H, Marbach H, Steinrück HP, Zhu J, Lytken O (2016)

Publication Status: Published

Publication Type: Journal article

Publication year: 2016

Journal

Publisher: WILEY-V C H VERLAG GMBH

Book Volume: 1

Pages Range: 6103-6105

Journal Issue: 19

DOI: 10.1002/slct.201601398

Abstract

We have studied the adsorption and self-metalation of tetraphenylporphyrin (2HTPP) on TiO2(110) -1 x 1 with X-ray Photoelectron Spectroscopy (XPS) and Scanning Tunneling Microscopy (STM). Upon adsorption at room temperature the first monolayer of 2HTPP is protonated by protons from the surface, forming porphyrin diacid (4HTPP(2+)). In STM, single molecules with low mobility and no long-range order were observed. As the surface is heated to 400 K, any unprotonated 2HTPP molecules in the second layer metalate, forming titanyl tetraphenylporphyrin (TiOTPP), but the protonated molecules in the first layer remain. As the surface is heated further to 550 K even the protonated 4HTPP(2+) molecules metalate and only TiOTPP remain on the surface.

Authors with CRIS profile

Additional Organisation(s)

Involved external institutions

University of Science and Technology of China (USTC) China (CN)

How to cite

APA:

Köbl, J., Wang, T., Wang, C., Drost, M., TU, F., Xu, Q.,... Lytken, O. (2016). Hungry Porphyrins: Protonation and Self-Metalation of Tetraphenylporphyrin on TiO2(110)-1 x 1. ChemistrySelect, 1(19), 6103-6105. https://dx.doi.org/10.1002/slct.201601398

MLA:

Köbl, Julia, et al. "Hungry Porphyrins: Protonation and Self-Metalation of Tetraphenylporphyrin on TiO2(110)-1 x 1." ChemistrySelect 1.19 (2016): 6103-6105.

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