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Masanori Yamamoto

 

Research Interest

 

1. Chemsitry of Carbon

 

Topic 1

When we achieve carbon materials with the well-defined structures that could be well-documented at the molecular level, many interesting physicochemical properties will also be expected in the fields ranging from the electrochemistry and catalysis to force-induced gas-liquid phase transition as has been reported by us (Nat. Commun. 2019, 10, 2559). The design, synthesis, and investigation of such a facinating carbon material (chemistry of carbon) are ongoing at Tohoku University. The details shall be disclosed in due course.

 


 

2. Analytical Chemistry at Solidliquid Interfaces

 

Topic 1

Typically, the interactions at molecular level can be understood and controlled in terms of various interactions including π‒π interactions and hydrogen bondings. Instead, this research reveals another factor, the entropic term in relation to the dynamics of solid phases, for controlling the interactions using various spectroscopic analysis. Such a new understanding of interactions at the solid-liquid interfaces is of particular interest in relation to the development of analytical method and understanding of enzymatic reactions in biology.

 

Probing the Entropic Effect in Molecular Non-covalent Interactions between Resin-bound Polybrominated Arenes and Small Substrates
ChemPlusChem 2018, 83, 820824
DOI: 10.1002/cplu.201800304

 


 

3. Electrochemical Fixation of Inert Gases into Fuels

 

Electrochemical conversion of inert gases using various inorganic materials is investigated: Porous mesostructured metal electrodes have been found to be good catalysts for electrochemical reduction of carbon dioxide into oxygenated hydrocarbons even at small overpotential for the hydrocarbon generation. At an applied potential of ‒0.60 V versus reversible hydrogen electrode (RHE), ethylene glycol, ethanol, and acetate are formed with high faradaic efficiency, and the isotope-labelling experiments using 13CO2 and the subsequent analysis using nuclear magnetic resonance (NMR) spectroscopy showed that 13C has been successfully introduced into the fixed oxygenates. The catalytic activity lasted for more than 40 h. These findings of the catalytic features are of great interenst in utilizing CO2 to achieve a carbon-neutral cycle. (Patent Application, 2017-198623, filled in October 2017)

 

Topic 2