Differing HOMO and LUMO mediated conduction in a porphyrin nanorod.
In this communication we provide the first UHV-STM images and STM-based current-voltage (I-V) and orbital mediated tunneling spectroscopy (OMTS) data on a self-assembled porphyrin nanostructure at the single structure level. We will show that transverse conductivity over distances less than 10 nm can occur by barrier type tunneling but that long distance conduction solely occurs through the LUMO band. These nanorods are very highly rectifying.
Friesen
Benjamin A
BA
Washington State University, Department of Chemistry and Materials Science and Engineering Program, P.O. Box 644630, Pullman, Washington 99164-4630, USA.
Wiggins
Bryan
B
McHale
Jeanne L
JL
Mazur
Ursula
U
Hipps
K W
KW