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Spectroscopic Analytical Chemistry Lab
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A lab that watches molecules change, using lasers that flash for just one trillionth of a second.
AboutAbout the lab
Watching molecules change in real time.
The Spectroscopic Analytical Chemistry Lab uses ultrashort-pulse lasers that flash for just one trillionth of a second to observe molecules in real time as they are changing.
Chemistry is the study of how substances change, but the changes are extremely fast, so researchers usually examine a reaction precisely before and after it occurs and infer what happens in between.
The lab therefore develops its own range of time-resolved spectroscopy instruments, and uses them to reveal at the molecular level what happens in functional materials such as those for artificial photosynthesis, photocatalysis, and organic electronics.
In recent years the lab has also set up organic synthesis facilities, so it can now work from the making of new materials onward.
Key terms
- Time-resolved spectroscopy
- A method that measures how a sample changes over time after it is hit with light, capturing how the state of a molecule shifts
- Excited state
- The state of a molecule that has absorbed light, received energy, and reached a higher energy than usual
- Thermally activated delayed fluorescence
- A mechanism in which a molecule that has moved into a non-emitting state returns with the help of heat and emits light after a delay
NewsLab news
A master's student received the Student Presentation Award at the 37th Symposium on Photochemistry of Coordination Compounds
A master's student received the Poster Award at the 37th Symposium on Photochemistry of Coordination Compounds
A master's student's research on iron complexes was published in J. Am. Chem. Soc.
Several master's students received the Young Researcher Encouragement Award at the 63rd Joint Kyushu Conference of Chemistry-Related Chapters
A doctoral student's research on micromixers was published in Anal. Chem.
ResearchResearch themes
The lab develops its own ultrafast spectroscopy instruments, which can observe the dynamic processes of materials that matter in both basic and applied science, and uses them to study in detail how materials change. Through collaborations with leading materials researchers in Japan and abroad, it advances spectroscopy-based materials science.
*Illustrative imageUncovering how organic emitters work
Organic compounds made of light elements such as carbon, oxygen, and sulfur show a wide range of optical functions, such as thermally activated delayed fluorescence and room-temperature phosphorescence. The lab applies time-resolved infrared spectroscopy and time-resolved emission spectroscopy to reveal how the structure moves in the excited state.
*Illustrative imageEnergy transfer in rare-earth emitters
Trivalent lanthanide ions show emission with high color purity and are promising as luminescent materials. For complexes that use energy transfer from ligands that absorb light well, the lab aims to clarify the mechanism of emission using ultrafast spectroscopy.
*Illustrative imageTransition metal emitters and artificial photosynthesis
If the mechanisms that synthesize substances with light could be designed artificially, it would bring solutions to energy problems closer. The lab captures short-lived reaction intermediates with ultrafast spectroscopy and investigates how reactions proceed after light is absorbed.
MembersFaculty
The members of the Spectroscopic Analytical Chemistry Lab are faculty, technical staff, and doctoral, master's, and undergraduate students.As of 2026
- ProfessorKen Onda
- Associate ProfessorKiyoshi Miyata
- Assistant ProfessorTomohiro Ogawa
- Assistant ProfessorTatsuya Yoshida
- Assistant ProfessorTakumi Ehara
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: “Femtosecond laser filament” Onlywww / CC BY 4.0 (cropped)
- Uncovering how organic emitters work: “Fluorescein in ammonia solution (Part 13)” RaúlCHTRY / CC BY-SA 4.0 (cropped)
- Energy transfer in rare-earth emitters: “Agate luminescence in ultraviolet rays” Dr Anatoly / CC BY 4.0 (cropped)
- Transition metal emitters and artificial photosynthesis: “Taro leaf underside, backlit by sun” Avenue / CC BY-SA 3.0 (cropped)
- Related lab (錯体物性化学研究室): “C-Tb-adp” Minhyuk Kim, Hwa-Sub Lee, Dong-Hyun Seo, Sung June Cho, Eun-chae Jeon & Hoi Ri Moon / CC BY 4.0 (cropped)
- Related lab (量子化学研究室): “Electric Propulsion Laboratory Vacuum Chamber (GRC-1964-C-70481)” NASA Glenn Research Center / Public domain (cropped)
- Related lab (生体分析化学研究室): “Cell membrane in Rheo leaf cell” Krishna satya 333 / CC BY-SA 4.0 (cropped)
- Related lab (構造化学研究室): “Water droplets - 10 images - Tillamook State Forest” Casey Helton / CC BY-SA 4.0 (cropped)
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