Abrupt coverage-induced enhancement of the self-metalation of tetraphenylporphyrin with Cu(111)

Röckert M, Ditze S, Stark MW, Xiao J, Steinrück HP, Marbach H, Lytken O (2014)

Publication Type: Journal article, Original article

Publication year: 2014

Journal

Original Authors: Röckert M., Ditze S., Stark M., Xiao J., Steinrück H.-P., Marbach H., Lytken O.

Publisher: American Chemical Society

Book Volume: 118

Pages Range: 1661-1667

Journal Issue: 3

DOI: 10.1021/jp412121b

Abstract

Using X-ray photoelectron spectroscopy (XPS) and scanning tunneling microscopy (STM), the coverage-dependent self-metalation of 2H- tetraphenylporphyrin (2HTPP) with Cu on Cu(111) at 400 K has been studied. At low coverages the porphyrin molecules are adsorbed as isolated molecules, and the rate of metalation is slow. As the coverage is increased beyond ∼0.36 molecules/nm, a supramolecular checkerboard structure is formed, with every second molecule slightly elevated above the surface. The appearance of this checkerboard structure coincides with a dramatic increase in the rate of metalation. This enhancement is attributed to a smaller activation barrier for the elevated molecules, which have an internal conformation similar to that of the free molecule, whereas the less reactive molecules in direct contact with the surface are strongly distorted. © 2013 American Chemical Society.

Authors with CRIS profile

Additional Organisation(s)

How to cite

APA:

Röckert, M., Ditze, S., Stark, M.W., Xiao, J., Steinrück, H.-P., Marbach, H., & Lytken, O. (2014). Abrupt coverage-induced enhancement of the self-metalation of tetraphenylporphyrin with Cu(111). Journal of Physical Chemistry C, 118(3), 1661-1667. https://doi.org/10.1021/jp412121b

MLA:

Röckert, Michael, et al. "Abrupt coverage-induced enhancement of the self-metalation of tetraphenylporphyrin with Cu(111)." Journal of Physical Chemistry C 118.3 (2014): 1661-1667.

BibTeX: Download