Fine-Tuning of Single-Molecule Conductance by Tweaking Both Electronic Structure and Conformation of Side Substituents
Herein, we describe a method to fine-tune the conductivity of single-molecule wires by employing a combination of chemical composition and geometrical modifications of multiple phenyl side groups as conductance modulators embedded along the main axis of the electronic pathway. We have measured the s...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Journal Article |
| Published: |
Wiley - V C H Verlag GmbH & Co. KGaA
2015
|
| Online Access: | http://hdl.handle.net/20.500.11937/30639 |
| _version_ | 1848753145350455296 |
|---|---|
| author | Aragonès, A. Darwish, Nadim Im, J. Lim, B. Choi, J. Koo, S. Díez-Pérez, I. |
| author_facet | Aragonès, A. Darwish, Nadim Im, J. Lim, B. Choi, J. Koo, S. Díez-Pérez, I. |
| author_sort | Aragonès, A. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Herein, we describe a method to fine-tune the conductivity of single-molecule wires by employing a combination of chemical composition and geometrical modifications of multiple phenyl side groups as conductance modulators embedded along the main axis of the electronic pathway. We have measured the single-molecule conductivity of a novel series of phenyl-substituted carotenoid wires whose conductivity can be tuned with high precision over an order of magnitude range by modulating both the electron-donating character of the phenyl substituent and its dihedral angle. It is demonstrated that the electronic communication between the phenyl side groups and the molecular wire is maximized when the phenyl groups are twisted closer to the plane of the conjugated molecular wire. These findings can be refined to a general technique for precisely tuning the conductivity of molecular wires. |
| first_indexed | 2025-11-14T08:19:52Z |
| format | Journal Article |
| id | curtin-20.500.11937-30639 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:19:52Z |
| publishDate | 2015 |
| publisher | Wiley - V C H Verlag GmbH & Co. KGaA |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-306392017-09-13T15:12:28Z Fine-Tuning of Single-Molecule Conductance by Tweaking Both Electronic Structure and Conformation of Side Substituents Aragonès, A. Darwish, Nadim Im, J. Lim, B. Choi, J. Koo, S. Díez-Pérez, I. Herein, we describe a method to fine-tune the conductivity of single-molecule wires by employing a combination of chemical composition and geometrical modifications of multiple phenyl side groups as conductance modulators embedded along the main axis of the electronic pathway. We have measured the single-molecule conductivity of a novel series of phenyl-substituted carotenoid wires whose conductivity can be tuned with high precision over an order of magnitude range by modulating both the electron-donating character of the phenyl substituent and its dihedral angle. It is demonstrated that the electronic communication between the phenyl side groups and the molecular wire is maximized when the phenyl groups are twisted closer to the plane of the conjugated molecular wire. These findings can be refined to a general technique for precisely tuning the conductivity of molecular wires. 2015 Journal Article http://hdl.handle.net/20.500.11937/30639 10.1002/chem.201500832 Wiley - V C H Verlag GmbH & Co. KGaA restricted |
| spellingShingle | Aragonès, A. Darwish, Nadim Im, J. Lim, B. Choi, J. Koo, S. Díez-Pérez, I. Fine-Tuning of Single-Molecule Conductance by Tweaking Both Electronic Structure and Conformation of Side Substituents |
| title | Fine-Tuning of Single-Molecule Conductance by Tweaking Both Electronic Structure and Conformation of Side Substituents |
| title_full | Fine-Tuning of Single-Molecule Conductance by Tweaking Both Electronic Structure and Conformation of Side Substituents |
| title_fullStr | Fine-Tuning of Single-Molecule Conductance by Tweaking Both Electronic Structure and Conformation of Side Substituents |
| title_full_unstemmed | Fine-Tuning of Single-Molecule Conductance by Tweaking Both Electronic Structure and Conformation of Side Substituents |
| title_short | Fine-Tuning of Single-Molecule Conductance by Tweaking Both Electronic Structure and Conformation of Side Substituents |
| title_sort | fine-tuning of single-molecule conductance by tweaking both electronic structure and conformation of side substituents |
| url | http://hdl.handle.net/20.500.11937/30639 |