Materials Development Division

Solid-State Metal-Complex Chemistry

Hitoshi MIYASAKA PHOTO
Prof. Hitoshi MIYASAKA
Assoc.Prof. Koji TANIGUCHI
Assist. Prof. Wataru KOSAKA
Assist. Prof. Yoshihiro SEKINE

Design of soft materials based on metal complexes toward the on-demand control of their correlated electrons/spins

We develop the subject of solid-state physical chemistry in coordination frameworks/polymers, in which our goal is to control synergistically, multidimensionally electronic and magnetic properties of molecular frameworks and molecule/ion transports and molecular interactions in coordination space, and finally to create new soft molecular materials with unique phenomena. The techniques of crystal engineering and molecular self-assembling based on metal complexes enable us to create diverse molecular frameworks and supramolecular architectures. Of course, many of metal complexes have such traits as high redox activity, high charge-transfer activity between metal ion and ligands, and paramagnetism with large anisotropy controllable by ligand-fields around metal ion chosen. We will be able to tune these characteristics in ”functional” and ”dynamical” molecular frameworks as if they were simply constructed by Lego blocks. ”Molecules” including metal complexes have the high design performance and fl exibility in their type diversity, so it is our new challenge to manipulate on-demand electrons/spins and chemical interactions in multi-dimensional coordination frameworks.

coordination polymers, redox-active metal complexes, electron/spin properties, porous coordination polymer, synergistic control of chemical interactions and physical responses
Temperature dependence of agnetic properties (χ and χT) and relative values of electrical resistibility ρ measured by THz-time-domain spectroscopy for a layered donor/acceptor metal-organic framework (D/A-MOF).

Temperature dependence of agnetic properties (χ and χT) and relative values of electrical resistibility ρ measured by THz-time-domain spectroscopy for a layered donor/acceptor metal-organic framework (D/A-MOF).

Temperature dependence of the real part of dielectric constant (ε’) found in a porous chain compound under several gaseous atmospheres (100kPa).

Temperature dependence of the real part of dielectric constant (ε’) found in a porous chain compound under several gaseous atmospheres
(100kPa).

Magnetoelectric control of a layered D/A-MOF (cathode) by lectronfilling using a Li-ion battery (LIB) system.

Magnetoelectric control of a layered D/A-MOF (cathode) by lectronfilling using a Li-ion battery (LIB) system.

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