Three-terminal devices to examine single-molecule conductance switching.
We report electronic transport measurements of single-molecule transistor devices incorporating bipyridyl-dinitro oligophenylene-ethynylene dithiol (BPDN-DT), a molecule known to exhibit conductance switching in other measurement configurations. We observe hysteretic conductance switching in 8% of devices with measurable currents and find that dependence of the switching properties on gate voltage is rare when compared to other single-molecule transistor devices. This suggests that polaron formation is unlikely to be responsible for switching in these devices. We discuss this and alternative switching mechanisms.
Keane
Z K
ZK
Department of Physics and Astronomy, Rice University, Houston, Texas 77005, USA.
Ciszek
J W
JW
Tour
J M
JM
Natelson
D
D
D015082:2,2'-Dipyridyl / Q000031:analogs & derivatives / Q000737:chemistry; D004553:Electric Conductivity; D004867:Equipment Design; D008422:Materials Testing / Q000295:instrumentation*; D013438:Sulfhydryl Compounds / Q000737:chemistry; D014173:Transistors, Electronic
D013438:Sulfhydryl Compounds; C513699:bipyridyl-dinitro oligophenylene-ethynylene dithiol; D015082:2,2'-Dipyridyl