Tuning the electrical conductance of metalloporphyrin supramolecular wires
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 curr...
| Main Authors: | , , , , , , , , , , |
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| Format: | Article |
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Nature Publishing Group
2016
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| Online Access: | https://eprints.nottingham.ac.uk/39429/ |
| _version_ | 1848795834093666304 |
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| author | Noori, Mohammed Aragones, Albert C. Di Palma, Giuseppe Darwish, Nadium Bailey, Steven W.D. Al-Galiby, Quisy Grace, Iain Amabilino, David B. Gonzalez-Campo, Arántzazu Díez-Pérez, Ismael Colin J., Lambert |
| author_facet | Noori, Mohammed Aragones, Albert C. Di Palma, Giuseppe Darwish, Nadium Bailey, Steven W.D. Al-Galiby, Quisy Grace, Iain Amabilino, David B. Gonzalez-Campo, Arántzazu Díez-Pérez, Ismael Colin J., Lambert |
| author_sort | Noori, Mohammed |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | 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 conductanc 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. |
| first_indexed | 2025-11-14T19:38:23Z |
| format | Article |
| id | nottingham-39429 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:38:23Z |
| publishDate | 2016 |
| publisher | Nature Publishing Group |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-394292020-05-04T18:20:31Z https://eprints.nottingham.ac.uk/39429/ Tuning the electrical conductance of metalloporphyrin supramolecular wires Noori, Mohammed Aragones, Albert C. Di Palma, Giuseppe Darwish, Nadium Bailey, Steven W.D. Al-Galiby, Quisy Grace, Iain Amabilino, David B. Gonzalez-Campo, Arántzazu Díez-Pérez, Ismael Colin J., Lambert 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 conductanc 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. Nature Publishing Group 2016-11-21 Article PeerReviewed Noori, Mohammed, Aragones, Albert C., Di Palma, Giuseppe, Darwish, Nadium, Bailey, Steven W.D., Al-Galiby, Quisy, Grace, Iain, Amabilino, David B., Gonzalez-Campo, Arántzazu, Díez-Pérez, Ismael and Colin J., Lambert (2016) Tuning the electrical conductance of metalloporphyrin supramolecular wires. Scientific Reports, 6 . 37352/1-37352/7. ISSN 2045-2322 http://www.nature.com/articles/srep37352 doi:10.1038/srep37352 doi:10.1038/srep37352 |
| spellingShingle | Noori, Mohammed Aragones, Albert C. Di Palma, Giuseppe Darwish, Nadium Bailey, Steven W.D. Al-Galiby, Quisy Grace, Iain Amabilino, David B. Gonzalez-Campo, Arántzazu Díez-Pérez, Ismael Colin J., Lambert Tuning the electrical conductance of metalloporphyrin supramolecular wires |
| title | Tuning the electrical conductance of metalloporphyrin supramolecular wires |
| title_full | Tuning the electrical conductance of metalloporphyrin supramolecular wires |
| title_fullStr | Tuning the electrical conductance of metalloporphyrin supramolecular wires |
| title_full_unstemmed | Tuning the electrical conductance of metalloporphyrin supramolecular wires |
| title_short | Tuning the electrical conductance of metalloporphyrin supramolecular wires |
| title_sort | tuning the electrical conductance of metalloporphyrin supramolecular wires |
| url | https://eprints.nottingham.ac.uk/39429/ https://eprints.nottingham.ac.uk/39429/ https://eprints.nottingham.ac.uk/39429/ |