TOKAI UNIVERSITY Researchers Guide 2020

Inorganic-organic hybrid materials have potential for the construction of functionalized materials. We can expect synergy of the merits derived from inorganic motifs to bring thermal stability and various functions, and from organic components which enable flexible control of the built-up structure. We have synthesized rare hybrid crystals comprising functional inorganic clusters (polyoxometalates) and surfactant molecules. These hybrid crystals can precisely tune the composition, and selective introduction of proton and metal ions such as lithium, sodium, magnesium, or calcium has been realized. Some hybrid crystals exhibit electric and proton conductivities, and are promising solid electrolytes or electrode materials for fuel-cell and rechargeable batteries.ResearchAreasChemistryKeywords■Inorganic-organic hybrid■Surfactant■Polyoxometalate■Crystallography■ConductivityRelatedresearchSDGConstruction and Functionalization of Inorganic-Organic Hybrid MaterialsProfessorTakeru ItoUndergraduate School of ScienceDepartment of ChemistrySelenium is an important micronutrient, essential to life. We are interested in design and synthesis of short selenopeptides, which mimic antioxidant functions of various selenoenzymes, such as glutathione peroxidase and thioredoxin reductase. These selenopeptides would be useful as potential targets of peptide drug discovery. Our recent achievements include a high-yield synthesis of a selenium analog of glutathione (selenoglutathione), a facile synthesis of cyclic peptides by intramolecular selenocysteine-mediated native chemical ligation (Sec-NCL), the first synthesis of a selenium analog of insulin (selenoinsulin), development of a new molecular simulation program for short peptides, etc.ResearchAreasChemistryKeywords■Peptide design■Protein folding■Selenium■Molecular simulation■AntioxidantRelatedresearchSDGDesign and chemical synthesis of selenopeptides and selenoproteins with antioxidant activityProfessorMichio IwaokaUndergraduate School of ScienceDepartment of ChemistryVolcanic activities are driven by the degassing of volatiles such as H2O, CO2, SO2, H2S and HCl dissolved in magma. The volatiles are carried to surface being involved in volcanic gas, crater lake water and hot spring water. By analyzing those uids, we can model the phenomena taking place beneath surface. The model is useful for the prediction of ongoing volcanic activity. The doctoral students in my laboratory are international. Four students obtained PhD recently. One student is studying now in the doctoral course.ResearchAreasChemistryKeywords■Volcanology■Geochemistry■Volcanic gas■Hot spring water■Crater lakeRelatedresearchSDGGeochemistry related to active volcanoesProfessorTakeshi OhbaUndergraduate School of ScienceDepartment of Chemistry64

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