Tuning the electrical conductance of metalloporphyrin supramolecular wires
dc.contributor.author | Noori, M. | |
dc.contributor.author | Aragonès, A. | |
dc.contributor.author | Di Palma, G. | |
dc.contributor.author | Darwish, Nadim | |
dc.contributor.author | Bailey, S. | |
dc.contributor.author | Al-Galiby, Q. | |
dc.contributor.author | Grace, I. | |
dc.contributor.author | Amabilino, D. | |
dc.contributor.author | González-Campo, A. | |
dc.contributor.author | Díez-Pérez, I. | |
dc.contributor.author | Lambert, C. | |
dc.date.accessioned | 2017-01-30T12:30:33Z | |
dc.date.available | 2017-01-30T12:30:33Z | |
dc.date.created | 2017-01-22T19:30:59Z | |
dc.date.issued | 2016 | |
dc.identifier.citation | Noori, M. and Aragonès, A. and Di Palma, G. and Darwish, N. and Bailey, S. and Al-Galiby, Q. and Grace, I. et al. 2016. Tuning the electrical conductance of metalloporphyrin supramolecular wires. Scientific Reports. 6: Article 37352. | |
dc.identifier.uri | http://hdl.handle.net/20.500.11937/22308 | |
dc.identifier.doi | 10.1038/srep37352 | |
dc.description.abstract |
In contrast with conventional single-molecule junctions, in which the current flows parallel to the long axis or plane of a molecule, we investigate the transport properties of M(II)-5,15-diphenylporphyrin (M-DPP) single-molecule junctions (M=Co, Ni, Cu, or Zn divalent metal ions), in which the current flows perpendicular to the plane of the porphyrin. Novel STM-based conductance measurements combined with quantum transport calculations demonstrate that current-perpendicular-to-the-plane (CPP) junctions have three-orders-of-magnitude higher electrical conductances than their current-in-plane (CIP) counterparts, ranging from 2.10-2 G0 for Ni-DPP up to 8.10-2 G0 for Zn-DPP. The metal ion in the center of the DPP skeletons is strongly coordinated with the nitrogens of the pyridyl coated electrodes, with a binding energy that is sensitive to the choice of metal ion. We find that the binding energies of Zn-DPP and Co-DPP are significantly higher than those of Ni-DPP and Cu-DPP. Therefore when combined with its higher conductance, we identify Zn-DPP as the favoured candidate for high-conductance CPP single-molecule devices. | |
dc.publisher | Nature Publishing Group | |
dc.title | Tuning the electrical conductance of metalloporphyrin supramolecular wires | |
dc.type | Journal Article | |
dcterms.source.volume | 6 | |
dcterms.source.title | Scientific Reports | |
curtin.note |
This open access article is distributed under the Creative Commons license | |
curtin.department | Nanochemistry Research Institute | |
curtin.accessStatus | Open access |