| Autor: |
Pollack, S. K., Naciri, J., Mastrangelo, J., Patterson, C. H., Torres, J., Moore, M., Shashidhar, R., Kushmerick, J. G. |
| Zdroj: |
Langmuir; March 2004, Vol. 20 Issue: 5 p1838-1842, 5p |
| Abstrakt: |
We present a demonstration of molecular rectification in a metal−molecule−metal junction created by self-assembly where endgroup chemistry does not influence the observed conductance asymmetry. Using a protection scheme which allows for stepwise deprotection of aryl thiols, the deposition of α,ω-dithio-molecules with a preferred polar order can be achieved. Quartz crystal microgravimetry was used to demonstrate the sequential nature of the deprotection and the preferred orientation of absorption of the monodeprotected dithiols. Current−voltage measurements of metal−molecule−metal junctions reveal a bias polarity asymmetry resulting solely from the internal molecular asymmetry and not from the initial protecting group chemistry. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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