title: The effect of substituents on molecular electronic junctions.
abstract: Previous reports have demonstrated that molecular electronic junctions exhibiting negative differential resistance show a marked substituent effect. We show that this substituent effect correlates with stability of the anionic form of the junction molecule. A sufficiently stable anion gives rise to a double potential barrier to electron transport across the molecular junction. The effect of thermal motion of the junction molecule on the electron transport is also considered.
authors.affiliation: Department of Chemistry and Biochemistry, Long Island University, Brooklyn, New York, USA.
authors.forename: Nikita
authors.initials: N
authors.lastname: Matsunaga
authors.forename: Karl
authors.initials: K
authors.lastname: Sohlberg
mesh_terms: D003461:Crystallography / Q000379:methods*; D017097:Electric Impedance; D004563:Electrochemistry / Q000379:methods*; D004566:Electrodes; D004581:Electronics; D004583:Electrons; D004735:Energy Transfer; D008958:Models, Molecular; D009038:Motion; D036103:Nanotechnology / Q000379:methods*; D012666:Semiconductors; D013696:Temperature