Ammonia adsorption on iron phthalocyanine on Au(111): Influence on adsorbate-substrate coupling and molecular spin

Journal Article · Mon Mar 21 00:00:00 EDT 2011 · Journal of Chemical Physics

DOI:https://doi.org/10.1063/1.3563635· OSTI ID:21560057

Isvoranu, Cristina; Ataman, Evren; Knudsen, Jan; Andersen, Jesper N; Schnadt, Joachim ^[1]; Bin, Wang; Bocquet, Marie-Laure ^[2]; Schulte, Karina ^[3]

---

1. Division of Synchrotron Radiation Research, Department of Physics, Lund University, Box 118, 221 00 Lund (Sweden)
2. Laboratoire de chimie, Ecole normale superieure de Lyon, 46, Allee d'Italie, 69364 Lyon Cedex 07 (France)
3. MAX-lab, Lund University, Box 118, 221 00 Lund (Sweden)

The adsorption of ammonia on Au(111)-supported monolayers of iron phthalocyanine has been investigated by x-ray photoelectron spectroscopy, x-ray absorption spectroscopy, and density functional theory calculations. The ammonia-induced changes of the x-ray photoemission lines show that a dative bond is formed between ammonia and the iron center of the phthalocyanine molecules, and that the local spin on the iron atom is quenched. This is confirmed by density functional theory, which also shows that the bond between the iron center of the metalorganic complex and the Au(111) substrate is weakened upon adsorption of ammonia. The experimental results further show that additional adsorption sites exist for ammonia on the iron phthalocyanine monolayer.

• OSTI ID: 21560057
• Journal Information: Journal of Chemical Physics, Vol. 134, Issue 11; Other Information: DOI: 10.1063/1.3563635; (c) 2011 American Institute of Physics; ISSN 0021-9606
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
36 MATERIALS SCIENCE
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ABSORPTION SPECTROSCOPY
ADSORPTION
AMMONIA
ATOMS
DENSITY FUNCTIONAL METHOD
GOLD
IRON
IRON COMPOUNDS
LAYERS
MOLECULES
ORGANIC SEMICONDUCTORS
ORGANOMETALLIC COMPOUNDS
PHOTOEMISSION
PHTHALOCYANINES
SPIN
SUBSTRATES
X RADIATION
X-RAY PHOTOELECTRON SPECTROSCOPY
X-RAY SPECTRA
X-RAY SPECTROSCOPY
ANGULAR MOMENTUM
CALCULATION METHODS
DYES
ELECTROMAGNETIC RADIATION
ELECTRON SPECTROSCOPY
ELEMENTS
EMISSION
HETEROCYCLIC COMPOUNDS
HYDRIDES
HYDROGEN COMPOUNDS
IONIZING RADIATIONS
MATERIALS
METALS
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
ORGANIC COMPOUNDS
PARTICLE PROPERTIES
PHOTOELECTRON SPECTROSCOPY
RADIATIONS
SECONDARY EMISSION
SEMICONDUCTOR MATERIALS
SORPTION
SPECTRA
SPECTROSCOPY
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
VARIATIONAL METHODS