Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 119, Issue 37, Pages 21561-21566Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpcc.5b07002
Keywords
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Funding
- Switzerland through the Swiss Contribution to the enlarged European Union (Joint Polish-Swiss Research Program) [PSPB-085/2010]
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Adsorption of carboxylic-substituted Zn porphyrin molecules (COOH-ZnTPP) on the (011) surface of rutile TiO2 is examined by scanning tunneling microscopy at room temperature. The molecules are either flat, stabilized by the surface defects, or mobile with their movement limited to a reconstruction row of the substrate. Upon increasing the molecular coverage the molecules form ID structures along the [1-10] direction, in which molecular boards are no longer parallel to the surface. This behavior is contrasted with the structures formed by Zn-TPP lacking the carboxylic group, which remain flat up to a monolayer coverage.
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