Chemical control of double barrier tunnelling in α,ω-dithiaalkane molecular wires?

Chemical Communications Pub Date: 2007-08-13 DOI: 10.1039/B709576G

Abstract

Single molecule conductance measurements on 1,4-bis-(6-thia-hexyl)-benzene derivatives reveal (i) that benzene rings serve as an effective indentation in the tunnelling barrier, and (ii) that more electron-rich benzene rings give higher conductances, consistent with hole conduction (i.e.via the benzene HOMO).

Graphical abstract: Chemical control of double barrier tunnelling in α,ω-dithiaalkane molecular wires
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