Making the well-defined contacts between molecules and substrates in nm scale and their electronic properties

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We have fabricated the well-defined molecule-substrate contact systems in nm scale and investigated the structural and electronic properties. We elucidated the mechanism of cycloaddition of alkene on Si(100)c(4x2). We have characterized the alkyl monolayer attached to the Si(111) surface using infrared absorption spectroscopy and investigated the electron transport properties using a mercury electrode. As a model system for a metal electrode in water, we investigated water adsorption on Rh(111). In addition, we investigated the adsorbed states and electronic properties of DBP-S and F4-TCNQ molecules on Cu(100). The weak interaction between cyclohexane and Rh(111) was studied using infrared absorption spectroscopy and elucidated the softening mechanism of CH stretching vibration.