Issue 22, 2019

Single-molecule conductance oscillations in alkane rings

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

Supplementary files

Article information

Article type
Paper
Submitted
05 noy 2018
Accepted
11 mar 2019
First published
11 mar 2019
This article is Open Access
Creative Commons BY-NC license

J. Mater. Chem. C, 2019,7, 6578-6581

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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