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Issue 22, 2019
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Single-molecule conductance oscillations in alkane rings

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Abstract

We investigate the single-molecule electrical conductance of alkane rings connected to gold electrodes and demonstrate that their logarithmic conductances are ocillatory functions of length. This contrasts with the logarithmic conductances of alkane chains, which decay linearly with length. This non-classical behaviour is attributed to conformational effects in the alkane rings, which tend to be more (less) planar when their branches contain even (odd) numbers of CH2 groups. Surprisingly the conductances of alkane rings with two parallel conductance paths are predicted to be lower then those of the corresponding linear chains with only one conductance path.

Graphical abstract: Single-molecule conductance oscillations in alkane rings

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Article information


Submitted
05 Nov 2018
Accepted
11 Mar 2019
First published
11 Mar 2019

This article is Open Access

J. Mater. Chem. C, 2019,7, 6578-6581
Article type
Paper

Single-molecule conductance oscillations in alkane rings

A. K. Ismael and C. J. Lambert, J. Mater. Chem. C, 2019, 7, 6578
DOI: 10.1039/C8TC05565C

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