Attenuating negative differential resistance in an electroactive self-assembled monolayer-based junction.
The negative differential resistance (NDR) peak current observed in redox active self-assembled monolayer-based molecular junctions has been attenuated by controlling the composition of the molecular junction. Two approaches studied here include capping the electroactive ferrocenyl groups with beta-cyclodextrin and functionalizing the scanning tunneling microscope tip used to probe the self-assembled monolayer (SAM) with n-alkanethiols of different lengths. These are the first examples of systematic modification of the magnitude of the NDR response in a molecule-based system.
Wassel
Ronald A
RA
Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695-8204, USA.
Credo
Grace M
GM
Fuierer
Ryan R
RR
Feldheim
Daniel L
DL
Gorman
Christopher B
CB