Abstract
The geometric and electronic structural properties of symmetric and asymmetric metal cluster-molecule-cluster ′complexes have been explored. The metals include Au, Ag, Pd, and Al, and both benzenedithiol and the three isometric forms of dicyanobenzene are included as bridging molecules. Calculated properties such as cluster-molecule interface geometry, electronic state, degree of metal → molecule charge transfer, metal-molecule mixing in the highest occupied molecular orbital-lowest unoccupied molecular orbital (HOMO-LUMO) energy region, the HOMO-LUMO gap, cluster → cluster ′charge transfer as a function of external field strength and direction, and the form of the potential profile across such complexes have been examined. Attempts are made to correlate charge transport with the characteristics of the cluster-complex systems. Indications of rectification in complexes that are asymmetric in the molecule, clusters, and molecule-cluster interfaces are discussed. The results obtained here are only suggestive because of the limitations of the cluster-complex model as it relates to charge transport.
| Original language | English |
|---|---|
| Article number | 234704 |
| Journal | Journal of Chemical Physics |
| Volume | 123 |
| Issue number | 23 |
| DOIs | |
| State | Published - 2005 |
Bibliographical note
Funding Information:We are grateful to the DoD-MURI program, to the NSF Nanotechnology Institute, and to the NASA-URETI program for support of this research. We thank Dr. Pinchas Aped for help with the figures. Table S1 and Figs. S1–S7 are in the supplementary materials.
Funding
We are grateful to the DoD-MURI program, to the NSF Nanotechnology Institute, and to the NASA-URETI program for support of this research. We thank Dr. Pinchas Aped for help with the figures. Table S1 and Figs. S1–S7 are in the supplementary materials.
| Funders | Funder number |
|---|---|
| DoD-MURI program | |
| NASA-URETI | |
| NSF Nanotechnology Institute |