We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Study of electron transport in polybenzenoid chains covalently attached to gold atoms through unsaturated methylene linkers.
- Authors
Ramos-Berdullas, Nicolás; Graña, Ana M.; Mandado, Marcos
- Abstract
It is well recognized that chemical properties such as aromaticity influence strongly the transport of electrons within a molecule. Since these properties are calculated from equilibrium wave functions, methods relying on equilibrium electronic distributions to determine the electron transport, such as those stemmed from the energy–time uncertainty relation, may be suitable to connect chemical concepts and electron transport. Here, we explore the relation of molecular conductance with the electric response and aromatic stabilization of molecular junctions formed with chains of polybenzenoid units attached to gold atoms through unsaturated methylene carbons. We have found that voltage dependence of conductance stems from the amount of electrons promoted by the electric potential from occupied to virtual molecular orbitals. We also show that aromaticity assists the electron transport when it arises from resonant polarized structures. Otherwise, aromaticity decreases electron transport as reported in previous theoretical and experimental works.
- Subjects
ELECTRON distribution; ELECTRIC admittance; ATOMS; CHEMICAL properties; MOLECULAR orbitals; ELECTRON transport
- Publication
Theoretical Chemistry Accounts: Theory, Computation, & Modeling, 2015, Vol 134, Issue 2, p1
- ISSN
1432-881X
- Publication type
Article
- DOI
10.1007/s00214-015-1620-z