Adsorption Structure of Cobalt Tetraphenylporphyrin on Ag(100)

Wechsler D, Franke M, Tariq Q, Zhang L, Lee TL, Thakur PK, Tsud N, Bercha S, Prince KC, Steinrück HP, Lytken O (2017)


Publication Status: Published

Publication Type: Journal article

Publication year: 2017

Journal

Publisher: AMER CHEMICAL SOC

Book Volume: 121

Pages Range: 5667-5674

Journal Issue: 10

DOI: 10.1021/acs.jpcc.7b00518

Abstract

Using a combination of LEED, high-resolution XPS, XSW, and NEXAFS, we have studied the adsorption of cobalt(II) 5,10,15,20-tetraphenylporphyrin (CoTPP) on Ag(100) at 300 K. In agreement with previous studies on Ag(111), we find a charge transfer from the silver surface to the porphyrin molecule, reducing the metal center. At high coverages we observe a square-shaped 1.41 X 1.41 nm(2) adsorption structure, which becomes more open at lower coverages. Because of the superior energy resolution of the Diamond i09 beamline, we are able to resolve a low binding-energy shoulder in the C 1s spectrum, originating from the lower carbon atoms in the rotated phenyl rings. This is confirmed by XSW measurements, which also gives the adsorption heights of the other atoms in the molecule. In addition, the XSW and complementary NEXAFS measurements yield information about the rotation of the phenyl rings and the deformation of the macrocycle.

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APA:

Wechsler, D., Franke, M., Tariq, Q., Zhang, L., Lee, T.-L., Thakur, P.K.,... Lytken, O. (2017). Adsorption Structure of Cobalt Tetraphenylporphyrin on Ag(100). Journal of Physical Chemistry C, 121(10), 5667-5674. https://dx.doi.org/10.1021/acs.jpcc.7b00518

MLA:

Wechsler, Daniel, et al. "Adsorption Structure of Cobalt Tetraphenylporphyrin on Ag(100)." Journal of Physical Chemistry C 121.10 (2017): 5667-5674.

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