title: Negative differential resistance (NDR) in similar molecules with distinct redox behaviour.
abstract: The transport characterization of self-assembled monolayers (SAMs) based on the closed and open-shell forms of a fully conjugated polychlorotrimethylphenyl (PTM) derivative hybridized with the gold substrate reveals that both systems exhibit negative differential resistance (NDR) in their I-V curves which was attributed to similar resonant tunnelling with unoccupied molecular orbitals. This work demonstrates that distinct transport mechanisms can dominate depending on the bias-voltage applied and shows that NDR processes are not influenced here by the redox character of the molecules.
authors.affiliation: Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus de la Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain.
authors.forename: Núria
authors.initials: N
authors.lastname: Crivillers
authors.forename: Markos
authors.initials: M
authors.lastname: Paradinas
authors.forename: Marta
authors.initials: M
authors.lastname: Mas-Torrent
authors.forename: Stefan T
authors.initials: ST
authors.lastname: Bromley
authors.forename: Concepció
authors.initials: C
authors.lastname: Rovira
authors.forename: Carmen
authors.initials: C
authors.lastname: Ocal
authors.forename: Jaume
authors.initials: J
authors.lastname: Veciana
mesh_terms: D001555:Benzene Derivatives / Q000737:chemistry*; D017097:Electric Impedance; D006046:Gold / Q000737:chemistry*; D008968:Molecular Conformation; D010084:Oxidation-Reduction; D011789:Quantum Theory; D013499:Surface Properties
chemical_list: D001555:Benzene Derivatives; D006046:Gold