Institute for Materials Chemistry and Engineering, Kyushu University


LAST UPDATE 2021/06/14

  • 研究者氏名
    Researcher Name

    呉樹旗 ShuQi WU
    助教 Assistant Professor
  • 所属
    Professional Affiliation

    Institute for Materials Chemistry and Engineering, Kyushu University

    物質基盤化学部門 分子物質化学分野
    Division of Fundamental Organic Chemistry, Molecular Materials Chemistry
  • 研究キーワード
    Research Keywords

    Molecular Magnetism
    Molecular Pyroelectricity
    Magneto-electric Coupling
    Electronic Structure
Research Subject

Development of molecular crystals with multiple switching properties

研究の背景 Background

With the trend of miniaturization of electronic devices, molecular materials with multifunctionality are generally regarded as potential candidates for next-generation information technology. Controlling the magnetic and electronic states by external stimuli will play a central role in this aspect. In our study, we design and synthesize molecular crystals with the electronic structures lying at the boundary of different local minima on the potential energy surfaces, aiming at realizing the controllable switching behavior and synergistic electric and magnetic field effects.

研究の目標 Outcome

Molecular crystals with dynamic transition (valence tautomerism, spin crossover, etc.) behavior or superparamagnetic behavior have been designed and synthesized. Polar crystalline samples were selected and characterized by electric measurements. Currently, pyroelectric effect from pure molecular origin (e.g. intramolecular electron transfer) has been observed in polar valence tautomerism crystals. Future work involves the development of light- and field-responsive dynamic polar crystalline materials.

研究図Research Figure

Fig.1. Molecular pyroelectricity in a cobalt valence tautomeric complex

Fig.2. Synergistic luminescence and spin crossover in a Fe(II) complex

Fig.3 Slow magnetic relaxation via phonon bottle neck in a Ru(III) complex

文献 / Publications

Nat. Commun., 2021, 12, 2738; Nat. Commun., 2020, 11, 1992; CCS Chem., 2020, 2, 2464–2472; Nat. Commun., 2019, 10, 5510; Inorg. Chem., 2019, 58, 10160–10166; J. Am. Chem. Soc., 2018, 140, 9426–9433; Chem. Eur. J.,2017, 23, 10028–10033.