Effects of Electrode–Molecule Binding and Junction Geometry on the Single-Molecule Conductance of bis-2,2′:6′,2″-Terpyridine-based Complexes

The single molecule conductances of a series of bis-2,2′:6′,2″-terpyridine complexes featuring Ru­(II), Fe­(II), and Co­(II) metal ions and trimethylsilylethynyl (Me3SiCC−) or thiomethyl (MeS-) surface contact groups have been determined. In the absence of electrochemical gating, these complexes be...

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Bibliographic Details
Published in:Inorganic chemistry 2016-03, Vol.55 (6), p.2691-2700
Main Authors: Davidson, Ross, Al-Owaedi, Oday A, Milan, David C, Zeng, Qiang, Tory, Joanne, Hartl, František, Higgins, Simon J, Nichols, Richard J, Lambert, Colin J, Low, Paul J
Format: Article
Language:English
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Summary:The single molecule conductances of a series of bis-2,2′:6′,2″-terpyridine complexes featuring Ru­(II), Fe­(II), and Co­(II) metal ions and trimethylsilylethynyl (Me3SiCC−) or thiomethyl (MeS-) surface contact groups have been determined. In the absence of electrochemical gating, these complexes behave as tunneling barriers, with conductance properties determined more by the strength of the electrode–molecule contact and the structure of the “linker” than the nature of the metal-ion or redox properties of the complex.
ISSN:0020-1669
1520-510X
DOI:10.1021/acs.inorgchem.5b02094