Influence of the Chemical Structure on the Stability and Conductance of Porphyrin Single-Molecule Junctions

Different bridging geometries can explain the observation that porphyrin molecules with added thiol end groups and pyridine axial groups form more‐stable single‐molecule junctions with an increased spread in low‐bias conductance. The stability of these geometries is demonstrated by time‐dependent co...

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Bibliographic Details
Published in:Angewandte Chemie International Edition 2011-11, Vol.50 (47), p.11223-11226
Main Authors: Perrin, Mickael L., Prins, Ferry, Martin, Christian A., Shaikh, Ahson J., Eelkema, Rienk, van Esch, Jan H., Briza, Tomas, Kaplanek, Robert, Kral, Vladimir, van Ruitenbeek, Jan M., van der Zant, Herre S. J., Dulić, Diana
Format: Article
Language:English
Subjects:
break junctions
molecular electronics
porphyrinoids
single-molecule transport
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Summary:Different bridging geometries can explain the observation that porphyrin molecules with added thiol end groups and pyridine axial groups form more‐stable single‐molecule junctions with an increased spread in low‐bias conductance. The stability of these geometries is demonstrated by time‐dependent conductance measurements. In contrast, rodlike molecules show one preferential binding geometry.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201104757