2016 Fiscal Year Final Research Report
Investigation on the electromagnetic and chemical effect of surface enhanced Raman scattering
| Project/Area Number |
16K13975
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Functional solid state chemistry
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| Research Institution | Tokyo Institute of Technology |
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Principal Investigator |
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| Project Period (FY) |
2016-04-01 – 2017-03-31
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| Keywords | 表面増強ラマン散乱 / 単分子接合 |
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| Outline of Final Research Achievements |
We have developed the new technique for simultaneous measurement of surface enhanced Raman scattering (SERS) and current-voltage (I-V) characteristics in order to investigate the electromagnetic and chemical effect of SERS. We got remarkable experimental results for single 1,4-benzenedithiol (BDT) junctions. The I-V response of BDT junctions, reveals the existence of three meta-stable states arising from different adsorption sites. Notably, correlated SERS measurements show selectivity towards one of the adsorption sites “bridge sites”. This site-selectivity represents an essential step towards the reliable integration of individual molecules on metallic surfaces. Furthermore, the hybrid spectro-electric technique reveals the dependence of the SERS intensity on the strength of the molecule-metal interaction, showing the interdependence between the optical and electronic properties in single-molecule junctions.
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| Free Research Field |
単分子化学
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