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Otsubo Lab
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The lab creates new solid-state materials, centered on metal complexes.
AboutAbout the lab
Creating new solid-state materials from metal complexes.
The Otsubo Lab studies solid-state physical chemistry, centered on metal complexes.
Metal complexes, assembled from metal ions and ligands, are highly flexible and designable, which makes a wide variety of material designs possible.
The lab aims to create novel compounds through new synthesis, reaction, and functionalization methods, and to uncover their physical properties with advanced measurement techniques such as synchrotron radiation.
The lab is distinguished by its broad scope: it goes beyond metal complexes to cover molecular solids and inorganic compounds (inorganic/organic hybrids).
Key terms
- Metal complex
- A compound formed by assembling metal ions and ligands. The combinations are enormous in number, and the compounds can be designed flexibly.
- Coordination bond
- The bond that links a metal ion and a ligand. Compared with covalent bonds and hydrogen bonds, it is "neither too strong nor too weak."
- Ligand
- The molecule that combines with a metal ion to form a complex. The number of possible combinations with organic ligands is practically endless.
NewsLab news
Paper by a master's student accepted
Paper by a master's student published
A master's student wins a poster award at the 75th Symposium on Coordination Chemistry of Japan
ResearchResearch themes
Metal complexes are formed when metal ions and ligands are joined by coordination bonds that are "neither too strong nor too weak," and because the possible combinations are enormous, a wide variety of materials can be designed. The lab aims to create novel compounds through new synthesis, reaction, and functionalization methods, and to uncover their physical properties with advanced measurement techniques such as synchrotron radiation.
*Illustrative imageSearching for new materials with new synthetic methods
The lab searches for new materials based on new methods of synthesizing complexes.
*Illustrative imageCreating molecular solids through molecular inclusion
This research makes full use of molecular inclusion in supramolecular complexes to create new molecular solids.
*Illustrative imageGenerating physical properties from crystal interfaces
The lab focuses on the interfaces of bulk crystals of complexes to create new physical properties.
*Illustrative imageStudying porous complexes with synchrotron X-rays
The lab uses synchrotron X-rays to uncover the physical properties of porous complexes.
MembersFaculty
The Otsubo Lab consists of faculty members, master's students, and undergraduate students.As of 2026
- Associate ProfessorKazuya Otsubo
- Assistant ProfessorHaruki Sugiyama
VoicesStudent voices
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “SM beamline ( )” CLS Research Office from Saskatoon, Canada / CC BY-SA 2.0 (cropped)
- Searching for new materials with new synthetic methods: “PSM V19 D251 Crystals of iodoform obtained by synthesis” 作者不詳 / Public domain (cropped)
- Creating molecular solids through molecular inclusion: “Slag with copper inclusions” OneLittleMouse / Public domain (cropped)
- Generating physical properties from crystal interfaces: “Growth stages of corundum crystals” Dr Anatoly / CC BY 4.0 (cropped)
- Studying porous complexes with synchrotron X-rays: “SPring-8” Koji101 / CC BY 3.0 (cropped)
- Related lab (田所研究室): “Water-dimer-3D-balls” Hoa112008 / Public domain (cropped)
- Related lab (中根研究室): “Metal-binding pterin complex ball” Jynto (more from this user) / CC0 (cropped)
- Related lab (原口研究室): “MOF-76” ZSchulte / CC BY-SA 4.0 (cropped)
- Related lab (秋津研究室): “Copper sulfate pentahydrate crystals” W. Oelen / CC BY-SA 3.0 (cropped)
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