2008 •
Dimerization boosts one-dimensional mobility of conformationally adapted porphyrins on a hexagonal surface atomic lattice.
Authors:
M. Eichberger, Matthias Marschall, Joachim Reichert, Alexander Weber-Bargioni, Willi Auwärter, Rizhi Wang, H. J. Kreuzer, Y. Pennec, Agustin Schiffrin, Johannes V. Barth
Abstract:
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 metallos (...)
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. (Read More)
M. Eichberger, Matthias Marschall, Joachim Reichert, Alexander Weber-Bargioni, Willi Auwärter, Rizh (...)
Nano Letters ·
2008
Chemical physics |
Crystallography |
Molecular physics |
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