title: Probing the effects of conjugation path on the electronic transmission through single molecules using scanning tunneling microscopy.
abstract: A systematic study of the relationship between the molecular structure of a series of thiol end-capped oligo-phenylenevinylenes (OPVs) and the coherent electronic transmission at the single molecule level was measured by scanning tunneling microscopy (STM). This reveals a significant change in the electronic transparency of various OPV derivatives due to the insertion of a methylene spacer group or due to nitro group substitution. Apparently, changes in the conjugation path through the central benzene ring from para to meta substitution does not have a profound effect on the electronic transparency of the molecules.
authors.affiliation: Nano-Science Center, University of Copenhagen, Universitetsparken 5, 2100 Copenhagen Ø, Denmark.
authors.forename: Kasper
authors.initials: K
authors.lastname: Moth-Poulsen
authors.forename: Lionel
authors.initials: L
authors.lastname: Patrone
authors.forename: Nicolai
authors.initials: N
authors.lastname: Stuhr-Hansen
authors.forename: Jørn B
authors.initials: JB
authors.lastname: Christensen
authors.forename: Jean-Philippe
authors.initials: JP
authors.lastname: Bourgoin
authors.forename: Thomas
authors.initials: T
authors.lastname: Bjørnholm