Issue 42, 2018, Issue in Progress

Conductance of ‘bare-bones’ tripodal molecular wires


Controlling the orientation of molecular conductors on the electrode surfaces is a critical factor in the development of single-molecule conductors. In the current study, we used the scanning tunnelling microscopy-based break junction (STM-BJ) technique to explore ‘bare-bones’ tripodal molecular wires, employing different anchor groups (AGs) at the ‘top’ and ‘bottom’ of the tripod. The triarylphosphine tris(4-(methylthio)phenyl)phosphine and its corresponding phosphine sulfide showed only a single high conductance feature in the resulting 1- and 2-dimensional conductance histograms, whereas analogous molecules with fewer than three thiomethyl AGs did not show clear conductance features. Thus, by systematic molecular modifications and with the aid of supporting DFT calculations, the binding geometry, with respect to the surface, was elucidated.

Graphical abstract: Conductance of ‘bare-bones’ tripodal molecular wires

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Article information

Article type
09 Feb 2018
18 Jun 2018
First published
28 Jun 2018
This article is Open Access
Creative Commons BY license

RSC Adv., 2018,8, 23585-23590

Conductance of ‘bare-bones’ tripodal molecular wires

R. J. Davidson, D. C. Milan, O. A. Al-Owaedi, A. K. Ismael, R. J. Nichols, S. J. Higgins, C. J. Lambert, D. S. Yufit and A. Beeby, RSC Adv., 2018, 8, 23585 DOI: 10.1039/C8RA01257A

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