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Single-molecule conductance oscillations in alkane rings

Research output: Contribution to journalJournal article

Published
<mark>Journal publication date</mark>14/06/2019
<mark>Journal</mark>Journal of Materials Chemistry C
Issue number22
Volume7
Number of pages4
Pages (from-to)6578-6581
Publication statusPublished
Early online date11/03/19
Original languageEnglish

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.