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Our group investigates new materials synthesized by metal complex assemblies from the viewpoint of coordination chemistry, solid state chemistry, and supramolecular chemistry. We use the anionic four-coordinate/penta-coordinate molecules with cyanides as building units, combined with various metal ions or organic cations for constructing materials. They exhibit interesting dynamic structural characteristics such as thermal expansion, melting, and ion conduction. Moreover, we are also developing molecular probes, that can work in complex environments such as cell membranes, to investigate and promote membrane functions.
私たちは、錯体分子集積により合成される新たな材料について、錯体化学や固体化学、超分子化学の観点から研究しています。特に、シアノ基を有するアニオン性の四配位・五配位錯体分子ユニットを最小単位として、様々な金属イオンあるいは有機カチオンと組み合わせることで得られる物質の動的な構造特性（熱膨張・融解・イオン伝導など）に着目しています。また、細胞膜のような複雑な環境下で働く錯体分子プローブの開発も行っています。
Recent NEws
Recent NEws
2025.10.10
New paper on the melting cyanido-bridged CPs has been published by Chem. Eur. J.
2025.6.26
New paper on the 2D-CP based ferroelectric proton conductor has been published by Chem. Sci.
2025.4.8
I received the Young Scientists’ Award of the Commendation for Science and Technology by the Minister of Education, Culture, Sports, Science and Technology.
2025.3.6
A review paper on guest induced symmetry breaking host-guest systems has been published by Eur. J. Inorg. Chem. This paper can be seen in ChemRxiv.
2025.2.6
New paper on water rectification in the ferroelectric proton conductor has been published by Inorg. Chem.
2024.10.31
New paper on anisotropic proton conduction of 2D-MOFs has been published by Inorg. Chem.
2024.5.26
New paper on a flexible-flat CP has been published by Chem. Commun.
2024.5.11
New paper on mechanical properties of 2D-MOFs has been published by Chem. Mater.
2024.1.2
New paper on the first ferroelectric proton conductor has been published by J. Am. Chem. Soc.
2023.10.17
New paper on Janus-type 2D-CPs has been published by Inorg. Chem.
2023.6.21
New paper on a transformative luminescent organic-inorganic hybrid has been published by Angew. Chem. Int. Ed.
2022.12.2
New paper on the "true" negative thermal expansion of layers in the 2D-CP crystals has been published by Inorg. Chem.
2022.9.28
I received the Research Encouragement Award from the Japan Society of Coordination Chemistry.
2022.9.21
New paper on a polar proton conductor has been published by Inorg. Chem.
2022.7.25
New paper on a zero-area thermal expansion of a 2D-CP has been published by CrystEngComm.
2021.11.6
New paper on crystal morphology and size effects on structural properties of 2D-CPs has been published by Chem. Eur. J.
2021.5.19
New paper on a unique Janus-type layer structure with anisotropic thermal expansion has been published in Chem. Lett.
2021.4.5
New paper on the flexible structural nature in excited states of luminescent 2D-CPs has been published in Inorg. Chem.
2021.3.25
New paper on the impact of electronic configuration of metal nodes in 2D-CPs on their anisotropic thermal expansion behavior has been published in ChemNanoMat.
2021.3.16
New paper on a very rare fluid-fluid phase separation of lipid membranes coassembled with a new metal complex lipid has been published in Angew. Chem. Int. Ed.
2021.1.11
New paper on theoretical investigation of an electronic-lattice coupling in the four-coordinate iron(II) CP has been published in Dalton Trans.
2020.9.30
I had the oral talk for the 70th Conference of Japan Society of Coordination Chemistry at online.
"Distorted coordination geometries of metal nodes for structural properties of coordination polymers"
2020.9.28
I and Dr. Kohei Yamagami (OIST) organized a symposium S4 on the 70th Conference of Japan Society of Coordination Chemistry at online.
"New design of coordination geometries centered in solid state materials"
2020.7.14
New paper on the first four-coordinate iron(II) CP has been published in Angew. Chem. Int. Ed.
2020.6.30
New paper on the cell application of 2D-CPs with metal complex lipids has been published in Angew. Chem. Int. Ed.
2020.6.8
New paper on a highly luminescent ionic liquid incorporating metal complex clusters has been published in Chem. Commun.
2019.10.15-18
I had the oral talk for the 7th Asian Conference on Coordination Chemistry at Kuala Lumpur in Malaysia.
"Melting of a 1D cyanide-bridged coordination polymer "
a photo taken with Dr. T. Kusamoto (IMS), Dr. Y. Sakata (Kanazawa Univ.)
2019.9.20
New paper on colossal inter-layer thermal expansions of the Hofmann-type-2D-CPs has been published in Inorg. Chem.
2019.5.10
New paper on a room temperature ionic liquid metal complex that shows water induced transformation into coordination polymer crystals has been published in Chem. Eur. J.
2019.4.11-13
I had the invited talk for the Symposium of Functional Coordination Chemistry 2019 at Sun Yet-Sen university (Guangzhou in China).
"Control of structural distortions for polar materials"
a photo taken with Prof. S. Kitagawa (WPI-iCeMS), Dr. Y. Takashima (Konan Univ.), Dr. D. Umeyama (NIMS).
2019.3.18
I had the invited talk for the Asian International Symposium -Coordination Chemistry and Organometallic Chemistry- in a CSJ meeting.
"Structural Dynamics of 1D and 2D Cyanide-bridged Coordination Polymers: Thermal Expansion and Melting"
2019.1.1
I moved to Kyushu university as an associate professor, from Kumamoto university.
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