Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 118, Issue 47, Pages 27549-27553Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp508990s
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Funding
- Aix-Marseille University Fundation A*MIDEX project - Investissements d'Avenir French Government program [ANR-11-IDEX-0001-02]
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Self-assembly at surfaces has proven to be very efficient in creating ordered, atomically controlled organic nanostructures. On-surface synthesis has recently emerged as a promising strategy to create stable structures bound by strong and irreversible covalent bonds. Here we present on-surface reaction between pyrazino phenanthroquinoxaline-tetracarbonitrile (PPCN) molecules and copper atoms on a Au(111) substrate. The reaction is monitored in ultrahigh vacuum conditions by scanning tunneling microscopy and X-ray photoelectron spectroscopy (XPS). After a 475 K annealing, phthalocyanine cyclization occurs around a copper atom; the increase of annealing temperature to 540 and 675 K leads to the formation of 1D and 2D phthalocyanine polymers, respectively. This reaction is confirmed by the modification of the Cu (2)p(3/2) and C 1s XPS spectra upon annealing.
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