Temperature-dependent chemical and structural transformations from 2H-tetraphenylporphyrin to copper(II)-tetraphenylporphyrin on Cu(111)

Journal article


Publication Details

Author(s): Xiao J, Ditze S, Chen M, Buchner F, Stark MW, Drost M, Steinrück HP, Gottfried JM, Marbach H
Journal: Journal of Physical Chemistry C
Publisher: American Chemical Society
Publication year: 2012
Volume: 116
Journal issue: 22
Pages range: 12275-12282
ISSN: 1932-7447
eISSN: 1932-7455


Abstract


Temperature-dependent chemical and structural changes of a submonolayer of 2H-tetraphenylporphyrin (2HTPP) on Cu(111) were studied with photoelectron spectroscopy (XPS/UPS) and scanning tunneling microscopy (STM). 2HTPP reacts with Cu atoms from the substrate to form copper(II)-tetraphenylporphyrin (CuTPP). This metalation reaction starts at about 400 K and was investigated at various temperatures up to 500 K. At room temperature, adsorbed 2HTPP adopts an orientation with the molecular plane parallel to the substrate; the same holds for its reaction product CuTPP after annealing to 400 K. In contrast, annealing at 450 K yields a tilted orientation of CuTPP, as indicated by STM and supported by C 1s XPS shifts and changes in the Cu(111) surface state. Subsequent annealing at 500 K restores a flat-lying orientation; however, the appearance of the complex in STM images differs from the original appearance of CuTPP. In summary, 2HTPP undergoes three irreversible transformations upon annealing on Cu(111), a metalation reaction to CuTPP followed by two intramolecular structural changes. © 2012 American Chemical Society.



FAU Authors / FAU Editors

Chen, Min
Lehrstuhl für Physikalische Chemie II
Ditze, Stefanie Dr.
Lehrstuhl für Physikalische Chemie II
Drost, Martin
Lehrstuhl für Physikalische Chemie II
Marbach, Hubertus PD Dr.
Lehrstuhl für Physikalische Chemie II
Stark, Michael Werner
Lehrstuhl für Physikalische Chemie II
Steinrück, Hans-Peter Prof. Dr.
Lehrstuhl für Physikalische Chemie II


Additional Organisation
Exzellenz-Cluster Engineering of Advanced Materials


External institutions with authors

Philipps-Universität Marburg


Research Fields

D Catalytic Materials
Exzellenz-Cluster Engineering of Advanced Materials


How to cite

APA:
Xiao, J., Ditze, S., Chen, M., Buchner, F., Stark, M.W., Drost, M.,... Marbach, H. (2012). Temperature-dependent chemical and structural transformations from 2H-tetraphenylporphyrin to copper(II)-tetraphenylporphyrin on Cu(111). Journal of Physical Chemistry C, 116(22), 12275-12282. https://dx.doi.org/10.1021/jp301757h

MLA:
Xiao, Jie, et al. "Temperature-dependent chemical and structural transformations from 2H-tetraphenylporphyrin to copper(II)-tetraphenylporphyrin on Cu(111)." Journal of Physical Chemistry C 116.22 (2012): 12275-12282.

BibTeX: 

Last updated on 2019-06-08 at 09:05