Researches
A. Studies on assembled compounds of lanten-type dinuclear complexes
Lantern-type dinuclear complexes have peculiar electronic states due to the placement of two metals in the vicinity of each other. By assembling the dinuclear complexes, the assembled compounds with unique properties on magnetism, conductivity and gas occlusion are produced. For example, compounds in which ruthenium (II,III) dinuclear complexes are assembled with hexacyanidoferrate(III) or octacynidotugstate ions exhibit properties as magnets at low temperatures.
B. Studies on functional phthalocyanines
Phthalocyanines have characteristic absorption bands in the near-infrared region (680 nm) because of their extended π-conjugated system. Thus, phthalocyanines are expected to be used as dyes in solar cells, photodynamic therapy (PDT) for cancer treatment and so on. However, they have low solubilities for solvents because of their planar structure.
In our laboratory, we are trying to improve the solubility in water by introducing various substituting groups around the phthalocyanine ring and produce new hetero-polynuclear phthalocynine containing complexes.
C. Studies on magnetic properties of polynuclear metal complexes
Assembling metal ions give various new properties. For example, when paramagnetic metal ions are lined up, spin interaction occurs among metal ions. Depending on the used multidentate ligands, various types of polynuclear complexes will be obtained. In our laboratory, we are investigating the effects of differences in the structure of polynuclear complexes on magnetic properties, and are studying their applications.
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