Polarizabilities of Adsorbed and Assembled Molecules: Measuring the Conductance through Buried Contacts
Source abstract
Abstract
We have measured the polarizabilities of four families of molecules adsorbed to Au{111} surfaces, with structures ranging from fully saturated to fully conjugated, including single-molecule switches. Measured polarizabilities increase with increasing length and conjugation in the adsorbed molecules and are consistent with theoretical calculations. For single-molecule switches, the polarizability reflects the difference in substrate-molecule electronic coupling in the ON and OFF conductance states. Calculations suggest that the switch between the two conductance states is correlated with an oxidation state change in a nitro functional group in the switch molecules.
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Research context
OpenAlex topics: Molecular Junctions and Nanostructures · Quantum and electron transport phenomena · Graphene research and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Departments of Chemistry and Physics, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
Department of Chemistry, Northwestern University, Evanston, Illinois 60208-3113, United States
Department of Chemistry and Smalley Institute for Nanoscale Science and Technology, Rice University, Houston, Texas 77005, United States
California NanoSystems Institute and Departments of Chemistry & Biochemistry and Materials Science & Engineering, University of California, Los Angeles, Los Angeles, California 90095, United States
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