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

Journal article


Publication Details

Author(s): 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
Journal: ChemistrySelect
Publisher: WILEY-V C H VERLAG GMBH
Publication year: 2016
Volume: 1
Journal issue: 19
Pages range: 6103-6105
ISSN: 2365-6549


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.



FAU Authors / FAU Editors

Drost, Martin
Lehrstuhl für Physikalische Chemie II
Franke, Matthias
Lehrstuhl für Physikalische Chemie II
Köbl, Julia
Lehrstuhl für Physikalische Chemie II
Lytken, Ole
Lehrstuhl für Physikalische Chemie II
Marbach, Hubertus PD Dr.
Lehrstuhl für Physikalische Chemie II
Steinrück, Hans-Peter Prof. Dr.
Lehrstuhl für Physikalische Chemie II
TU, Fan
Lehrstuhl für Physikalische Chemie II
Wechsler, Daniel
Lehrstuhl für Physikalische Chemie II


Additional Organisation
Exzellenz-Cluster Engineering of Advanced Materials


External institutions
University of Science and Technology of China (USTC)


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.

BibTeX: 

Last updated on 2018-08-08 at 11:08