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

Xiao J, Ditze S, Chen M, Buchner F, Stark MW, Drost M, Steinrück HP, Gottfried JM, Marbach H (2012)

Publication Type: Journal article

Publication year: 2012

Journal

Original Authors: Xiao J., Ditze S., Chen M., Buchner F., Stark M., Drost M., Steinrück H.-P., Gottfried J.M., Marbach H.

Publisher: American Chemical Society

Book Volume: 116

Pages Range: 12275-12282

Journal Issue: 22

DOI: 10.1021/jp301757h

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.

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Additional Organisation(s)

Involved external institutions

Philipps-Universität Marburg Germany (DE)

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.

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