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Functional Chiral Metal ComplexesJunior Associate prof. Takashiro Akitsu
Department of Chemistry, Faculty of Science |
"Understanding and designing structures and functions of chiral metal complexes for useful organic/inorganic hybrid materials." |
We study on molecular design and structure-function correlation of metal complexes having various metal ions and organic ligands by means of inorganic and organic syntheses, X-ray crystallography, various physical and spectroscopic measurements, and theoretical calculations. Our group aims at not only finding fundamental principles about physical inorganic chemistry for metal complexes but also applications for solid-state chemistry, organic/inorganic hybrid materials, bioinorganic chemistry, and so on. We are also interested in molecule-based magnets, photofunctional materials, homogeneous catalysts, metalloproteins or model chiral complexes, supramolecular complexes, and new applications of physical measurements.
For example, organic/inorganic hybrid materials containing achiral magnetic and catalyst-like metal complexes and chiral photochromic azo-compounds were prepared as soft polymer films. By using Weigert effect to align their molecular orientation of azo-compounds under polarized UV light irradiation, we have successfully observed increasing optical anisotropy of both components by means of polarized UV-VIS and IR spectra as well as CD spectra. In this way, polarized light-induced supramolecular chiral ordering of achiral components has potential applications for photofunctional magnetic chiral materials and displays containing liquid crystals, and organic EL, or electronics devices.
1.Analogy of van't Hoff Relationship for Thermally-Accessible Lattice Strain of Copper(II) Complex. Netsu Sokutei, 36, 244 (2009).
2.The first detection of photomodulation by both DC and in-phase AC susceptibility for organic/inorganic hybrid materials containing cyano-bridged Gd-Cr complex and azobenzene., J. Magn. Magn. Mater., 320, 1586 (2008).
3.Polarized spectroscopy and hybrid materials of chiral Schiff base Ni(II), Cu(II), Zn(II) complexes with included or separated azo-groups. Polyhedron, 30, 886 (2011).
4.Observation of induced CD on CdSe nano-particles from chiral Schiff base Ni(II), Cu(II), Zn(II) complexes. Inorg. Chem. Commun, 14, 423 (2011).
Dr. T. Akitsu received his B.S. degree in 1995 and Ph.D. degree in 2000 from Osaka University. After post-doctral fellow at Institute for Protein Research in at Osaka University, he became a Research Associate at Keio University in 2002. He also studied at Stanford University before he became a Junior Associate Professor at Tokyo University of Science in 2008.
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