Issue 20, 2016

Identification of the current path for a conductive molecular wire on a tripodal platform

Abstract

We present the chemical synthesis as well as charge transport measurements and calculations for a new tripodal platform based on a rigid 9,9′-spirobifluorene equipped with a phenylene-ethynylene wire. The transport experiments are performed with the help of the low-temperature mechanically controlled break junction technique with gold electrodes. By combining experimental and theoretical investigations of elastic and inelastic charge transport, we show that the current proceeds through the designated molecular wire and identify a binding geometry that is compatible with the experimental observations. The conductive molecular wire on the platform features a well-defined and relatively high conductance of the order of 10−3G0 despite the length of the current path of more than 1.7 nm, demonstrating that this platform is suitable to incorporate functional units like molecular switches or sensors.

Graphical abstract: Identification of the current path for a conductive molecular wire on a tripodal platform

Supplementary files

Article information

Article type
Communication
Submitted
07 Dec 2015
Accepted
01 May 2016
First published
03 May 2016
This article is Open Access
Creative Commons BY-NC license

Nanoscale, 2016,8, 10582-10590

Author version available

Identification of the current path for a conductive molecular wire on a tripodal platform

M. A. Karimi, S. G. Bahoosh, M. Valášek, M. Bürkle, M. Mayor, F. Pauly and E. Scheer, Nanoscale, 2016, 8, 10582 DOI: 10.1039/C5NR08708B

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