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Functional Coordination Chemistry Lab (Ishii Lab)
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Using light and spin as guides, the lab creates new functions of metal complexes.
AboutAbout the lab
Exploring nanoscale molecules for macroscale applications
The Ishii Lab studies new functions of materials that combine organic and inorganic components, from the perspectives of coordination chemistry, photochemistry, and spin chemistry.
Metal complexes are substances in which a metal is bound to organic molecules, and their key feature is that their electronic states can be designed in many different ways.
The lab synthesizes complexes suited to its research goals and investigates their properties through various spectroscopic measurements and detailed analysis.
Its research themes are wide-ranging, from mysteries related to the origin of life to molecules useful for environmental cleanup, medicine, and health.
Key terms
- Metal complex
- A compound formed when organic molecules and other species bind around a metal ion
- Chirality
- The property of an object whose mirror image cannot be superimposed on the original, like a right hand and a left hand
- Prussian blue
- A blue pigment containing iron, which readily takes up cesium ions
- Singlet oxygen
- Oxygen in a high-energy state. It is used in applications such as light-based cancer therapy
NewsLab news
A master's student received the Master's Thesis Excellent Presentation Award
A doctoral student received the Student Presentation Award from the Soft Crystal Study Group
Students received awards including the Student Lecture Award at the Symposium on Photochemistry of Coordination Compounds
A doctoral student received the Best Poster Award at ISPPCC2025
Press release on a material that captures microparticles of the same size as viruses
ResearchResearch themes
The lab aims to discover and elucidate new electronic states and, from the perspectives of coordination chemistry, photochemistry, and spin chemistry, to create new functions in organic-inorganic hybrid materials. It studies molecules at the nanoscale and connects the results to macroscale applications such as those in the environment and medicine.
*Illustrative imageMolecular chemistry at the cutting edge of science
The lab studies the origin of homochirality, the mystery of why the amino acids of living organisms exist in only one of two mirror-image forms. It also studies "soft crystals," which are flexible crystals, and "molecular wind-up springs" that move on their own.
*Illustrative imageMolecular materials that clean up the environment
In a chemistry group at the Institute of Industrial Science, the lab developed a decontamination cloth that removes radioactive cesium by fixing the pigment Prussian blue onto fabric. It also studies the electrochemical conversion of carbon dioxide into carbon monoxide.
*Illustrative imageMolecular chemistry for medicine and health
The lab created a molecule that glows to signal the presence of vitamin C in the body, and became the first to succeed in observing how vitamin C is transported inside a mouse without dissection. It also studies molecules that treat cancer with light.
*Illustrative imageSinglet oxygen-generating molecules and more
The lab also works on molecules that generate singlet oxygen when irradiated with light, control of the solid-state properties of the dye phthalocyanine, and spectroscopy of microorganisms.
MembersFaculty
The members of the Ishii Lab consist of faculty, project researchers, technical specialist staff, secretarial and temporary staff, and master's students.As of 2026
- ProfessorKazuyuki IshiiPublications ↗
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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: “Phthalocyanine-3D-balls” Jynto (talk) / CC0 (cropped)
- Molecular chemistry at the cutting edge of science: “Discoveries from Asteroid Bennu- Media Briefing Graphics (SVS14772 - Chiral-Serine-Early-Earth)” NASA's Scientific Visualization Studio / Public domain (cropped)
- Molecular materials that clean up the environment: “Pigment Berliner Blau” Saalebaer / CC0 (cropped)
- Molecular chemistry for medicine and health: “Crystals of ascorbic acid” Danielarapava / CC BY-SA 4.0 (cropped)
- Singlet oxygen-generating molecules and more: “Singlet oxygen Glow” Nekitmm / CC BY-SA 4.0 (cropped)
- Related lab (Suzuki-Yamashita Lab): “Alfa-Keggin” Quimiprof / CC BY-SA 4.0 (cropped)
- Related lab (Sunada Lab): “(Cp'3Sm)2(bpy) crystals” Brian N. Long, María J. Beltrán-Leíva, Joseph M. Sperling, Todd N. Poe, Cristian Celis-Barros & Thomas E. Albrecht-Schönzart / CC BY 4.0 (cropped)
- Related lab (Tatsuma Lab): “Rheinisches Landesmuseum Bonn Goldrubingefässe Ehrenfeld 01” Geolina163 / CC BY-SA 4.0 (cropped)
- Related lab (Fujita Lab): “Fujita Asymmetric 2+2 Photoaddition Catalyst” Vsrisuknimit / CC BY-SA 3.0 (cropped)
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