Transition voltage spectroscopy of porphyrin molecular wires.
Measurements are presented of the current-voltage (I-V) characteristics of individual thiol-tethered porphyrin molecules (isolated in an alkanethiol matrix) and of self-assembled monolayers. In both cases, it is found that I/V(2) displays a minimum at a characteristic "transition voltage"...
| Главные авторы: | , , , , , |
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| Формат: | Journal article |
| Язык: | English |
| Опубликовано: |
2010
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| _version_ | 1826293112386879488 |
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| author | Bennett, N Xu, G Esdaile, L Anderson, H Macdonald, J Elliott, M |
| author_facet | Bennett, N Xu, G Esdaile, L Anderson, H Macdonald, J Elliott, M |
| author_sort | Bennett, N |
| collection | OXFORD |
| description | Measurements are presented of the current-voltage (I-V) characteristics of individual thiol-tethered porphyrin molecules (isolated in an alkanethiol matrix) and of self-assembled monolayers. In both cases, it is found that I/V(2) displays a minimum at a characteristic "transition voltage" V(m). Repeated measurements of the transition voltage enable both its time development and statistical behavior to be determined. For isolated molecules, the transition voltage shows a multipeaked distribution of values, indicating the presence of a small number of distinct molecular/contact configurations, each having different transport characteristics. For self-assembled monolayers, in contrast, a single-peaked distribution was observed, which is consistent with parallel conduction through many molecules. |
| first_indexed | 2024-03-07T03:25:04Z |
| format | Journal article |
| id | oxford-uuid:b8c237d1-3174-4a0d-a86a-38033e268ac9 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T03:25:04Z |
| publishDate | 2010 |
| record_format | dspace |
| spelling | oxford-uuid:b8c237d1-3174-4a0d-a86a-38033e268ac92022-03-27T04:58:08ZTransition voltage spectroscopy of porphyrin molecular wires.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:b8c237d1-3174-4a0d-a86a-38033e268ac9EnglishSymplectic Elements at Oxford2010Bennett, NXu, GEsdaile, LAnderson, HMacdonald, JElliott, MMeasurements are presented of the current-voltage (I-V) characteristics of individual thiol-tethered porphyrin molecules (isolated in an alkanethiol matrix) and of self-assembled monolayers. In both cases, it is found that I/V(2) displays a minimum at a characteristic "transition voltage" V(m). Repeated measurements of the transition voltage enable both its time development and statistical behavior to be determined. For isolated molecules, the transition voltage shows a multipeaked distribution of values, indicating the presence of a small number of distinct molecular/contact configurations, each having different transport characteristics. For self-assembled monolayers, in contrast, a single-peaked distribution was observed, which is consistent with parallel conduction through many molecules. |
| spellingShingle | Bennett, N Xu, G Esdaile, L Anderson, H Macdonald, J Elliott, M Transition voltage spectroscopy of porphyrin molecular wires. |
| title | Transition voltage spectroscopy of porphyrin molecular wires. |
| title_full | Transition voltage spectroscopy of porphyrin molecular wires. |
| title_fullStr | Transition voltage spectroscopy of porphyrin molecular wires. |
| title_full_unstemmed | Transition voltage spectroscopy of porphyrin molecular wires. |
| title_short | Transition voltage spectroscopy of porphyrin molecular wires. |
| title_sort | transition voltage spectroscopy of porphyrin molecular wires |
| work_keys_str_mv | AT bennettn transitionvoltagespectroscopyofporphyrinmolecularwires AT xug transitionvoltagespectroscopyofporphyrinmolecularwires AT esdailel transitionvoltagespectroscopyofporphyrinmolecularwires AT andersonh transitionvoltagespectroscopyofporphyrinmolecularwires AT macdonaldj transitionvoltagespectroscopyofporphyrinmolecularwires AT elliottm transitionvoltagespectroscopyofporphyrinmolecularwires |