2016 Fiscal Year Final Research Report
Development of a novel spectroscopic technique for revealing the molecular orientation in a thin film deposited on particles or a rough surface
| Project/Area Number |
26620118
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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 |
Analytical chemistry
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| Research Institution | Kyoto University |
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Principal Investigator |
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| Research Collaborator |
SHIMOAKA Takafumi 京都大学, 化学研究所, 助教 (40609921)
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Keywords | 粗表面 / 表面選択律 / 吸着分子 / 分子配向 / 赤外分光法 |
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| Outline of Final Research Achievements |
Surface selection rule (SSR) for discussing the molecular orientation in a thin film adsorbed on a rough surface is figured out by analyzing a surface monolayer by defining the angle of incidence and polarizations. By introducing crossed-Nicol polarizers in the incident and detection paths, the specular reflection and diffuse reflection components are readily separated. To fully understand the spectra of the SAM, a new idea is proposed that the incidental light can be excluded from the discussion when the angle of incidence is small, which is named the pseudo-transmission (pd-Tr) model. Through the experiments of all the combinations of polarizations and angles of incidence, the pd-Tr model and the light suppression are found to be an important base to fully understand the SSR of molecular adsorbates on a rough surface of a non-absorbing medium.
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| Free Research Field |
界面の振動分光学
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