Chemical control of double barrier tunnelling in alpha,omega-dithiaalkane molecular wires.
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).
Leary
Edmund
E
Department of Chemistry, University of Liverpool, Crown Street, Liverpool, UKL69 7ZD.
Higgins
Simon J
SJ
van Zalinge
Harm
H
Haiss
Wolfgang
W
Nichols
Richard J
RJ