Institute of Multidisciplinary Research for Advanced Materials, Tohoku University


LAST UPDATE 2021/05/08

  • 研究者氏名
    Researcher Name

    星野哲久 Norihisa HOSHINO
    助教 Assistant Professor
  • 所属
    Professional Affiliation

    Institute of Multidisciplinary Research for Advanced Materials, Tohoku University

    マテリアル・計測ハイブリッド研究センター ハイブリッド材料創製研究分野 
    Materials-Measurement Hybrid Research Center, Hybrid Material Fabrication
  • 研究キーワード
    Research Keywords

    Coordination chemistry
    Molecular sciences
    Molecular magnets / Molecular dielectrics
    Molecular crystals / liquid crystals / plastic crystals
Research Subject
Development of multi-functional metal complexes

研究の背景 Background


Multi-functional materials responsible to photonic, electric and magnetic stimulations have been applied widely to the electronic devices and energy conversion elements. Molecular based condensed matters are unique in the variety and freedom of geometric and electric structures. Novel strategies for molecular design have been the current subject of intense interest for the purpose of multi-functional devices.

研究の目標 Outcome


Our research is aimed in the design of the molecules for components of functional materials utilizing the molecular motions (rotations, vibrations, etc.) in the solid for the dielectric and optical functions correlating with the intrinsic optical, electric and magnetic properties of the molecule, especially of the unique functionalities of multi-nuclear metal complexes.

研究図Research Figure

Fig.1. Synthesis of the Mn12 single molecule magnet bearing difluoromethyl groups as solidstate rotators. Magnetic and dielectric slow relaxations. Fig.2. Dielectric constants and single X-ray structure analyses for the crystals of AZADO radical, revealing that excitation of molecular rotations in the solid state (plastic crystalline phase) induced dielectric enhancements, diamagnetic- paramagnetic transitions, chromatic and birefringence changes.

文献 / Publications

Dalton Trans. 43, 9081 (2014). Chem.- Eur. J. 20, 16279 (2014). ASC Adv. 4, 743 (2014). Dalton Trans. 42, 4377 (2013).