Details

Autor(en) / Beteiligte

• Eichberger, M
• Marschall, M
• Reichert, J
• Weber-Bargioni, A
• Auwärter, W
• Wang, R. L. C
• Kreuzer, H. J
• Pennec, Y
• Schiffrin, A
• Barth, J. V

Titel

Dimerization Boosts One-Dimensional Mobility of Conformationally Adapted Porphyrins on a Hexagonal Surface Atomic Lattice

Ist Teil von

• Nano letters, 2008-12, Vol.8 (12), p.4608-4613

Ort / Verlag

Washington, DC: American Chemical Society

Erscheinungsjahr

2008

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• We employed temperature-controlled fast-scanning tunneling microscopy to monitor the diffusion of tetrapyridylporphyrin molecules on the Cu(111) surface. The data reveal unidirectional thermal migration of conformationally adapted monomers in the 300−360 K temperature range. Surprisingly equally oriented molecules spontaneously form dimers that feature a drastically increased one-dimensional diffusivity. The analysis of the bonding and mobility characteristics indicates that this boost is driven by a collective transport mechanism of a metallosupramolecular complex.