AVS 52nd International Symposium
    Surface Science Tuesday Sessions
       Session SS-TuP

Paper SS-TuP2
Ultrastable Conductance Measurements of Self-Assembled Monolayer Supported Phenylene-Ethylene Oligomers

Tuesday, November 1, 2005, 4:00 pm, Room Exhibit Hall C&D

Session: Surface Science Poster Session
Presenter: S.U. Nanayakkara, The Pennsylvania State University
Authors: S.U. Nanayakkara, The Pennsylvania State University
M.M. Blake, The Pennsylvania State University
A.A. Dameron, The Pennsylvania State University
R. Zhang, The Pennsylvania State University
C. Pochas, The Pennsylvania State University
M. Kim, The Pennsylvania State University
P.S. Weiss, The Pennsylvania State University
T.P. Pearl, North Carolina State University
S. Uppili, The Pennsylvania State University
D. Allara, The Pennsylvania State University
J.M. Tour, Rice University
Correspondent: Click to Email
We have used alkanethiolate self-assembled monolayers (SAMs) to fabricate support matrices for probing the charge transport properties of both isolated and bundled phenylene-ethylene oligomers (OPEs). By utilizing solution- and vapor-phase manipulation techniques, we can select the distribution of the OPE molecules within the SAM matrix. These fabrication techniques, in combination with the spatial and energy resolution afforded by low temperature scanning tunneling microscopy and spectroscopy, have enabled us to probe the electronic properties of these molecules. We have probed individual substituted OPE molecules in analogous environments to understand the effects of chemical substitution on charge transport. We aim to understand the conductance pathways of these molecules as a function of their chemical structure, physical environment and adsorption site.