Conductivity Measurements of Stilbene-Based Molecules Incorporated into Self-Assembled Monolayers by Conducting Probe Atomic Force Microscopy
| Autor: | Takao Ishida, Wataru Mizutani, Hiroaki Azehara, Yasuhisa Naitoh, Tien-Tzu Liang |
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| Rok vydání: | 2004 |
| Předmět: |
Kelvin probe force microscope
Chemistry Monolayer General Engineering Analytical chemistry General Physics and Astronomy Self-assembled monolayer Conductive atomic force microscopy Conductivity Spectroscopy Molecular physics Non-contact atomic force microscopy Photoconductive atomic force microscopy |
| Zdroj: | Japanese Journal of Applied Physics. 43:4511 |
| ISSN: | 1347-4065 0021-4922 |
| DOI: | 10.1143/jjap.43.4511 |
| Popis: | We describe a technique for acquiring current-voltage (I–V) characteristics of a metal-molecule-metal junction using a conducting probe atomic force microscopy (CP-AFM) technique. To conduct a repetitive experiment efficiently, we have utilized the current imaging tunneling spectroscopy (CITS) mode of the CP-AFM system. We have prepared a self-assembled monolayer of 1-decanethiol on Au(111) substrate where 4,4'-bis(mercaptomethyl)-trans-stilbene (BMMS) molecules have been incorporated. We demonstrate that we have constructed a conductivity map derived from a set of CITS data. Conductance peaks presumably involved by BMMS molecules have been found in the conductivity map and the corresponding I–V curves have exhibited fluctuations in current. The causes of the current fluctuations are also discussed. |
| Databáze: | OpenAIRE |
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