A03 Yuichi Kitagawa

Yuichi Kitagawa

Participating A03


Institute for Chemical Reaction Design and Discovery, Hokkaido University


Specially Appointed lecturer



Research Project

Asymmetric Chemical Reaction Based on Assembled Asymmetric Coordinated Ligands and Mechanical Force


A chemical reaction is studied via the excited state dynamics in an asymmetric space using mechanical force. The excited state of some materials has long been known to be formed via mechanical force, and these materials further show luminescence (triboluminescence). Lanthanide complexes are one of the materials forming excited states via mechanical force, and they have a characteristic high coordination number (i.e., 7–12); therefore, multiple kinds of ligands are assembled around the lanthanide ions. Herein, we synthesize a lanthanide complex containing a chemical reactive molecular framework in the excited state and ligands forming a characteristic asymmetric space around the lanthanide ion (e.g., chiral ligands). We study the structural transformation and change of the photophysical properties of these lanthanide complexes induced by a chemical reaction via the excited state using mechanical force.



Research Areas

Photochemistry, Quantum Chemistry, Physical Chemistry


Lanthanide Complex, Mechanical Force, Chemical Reaction, Triboluminescence, Circular Polarized Luminescence


[12] Long‐Range LMCT Coupling in EuIII Coordination Polymers for an Effective Molecular Luminescent Thermometer,
Yuichi Kitagawa; Marina Kumagai; Pedro Paulo Ferreira da Rosa; Koji Fushimi; Yasuchika Hasegawa, Chem. Eur. J., 27, 1, 264 – 269, 2021
DOI: 10.1002/chem.202002628.
[11] First Tribo‐excited Chemical Reaction of a Stacked Lanthanide Coordination Polymer with in Situ Reaction Monitor,
Yuichi Kitagawa; Ayu Naito; Koji Fushimi; Yasuchika Hasegawa, Chem. Eur. J., 27, 7, 2279 – 2283, 2021
DOI: 10.1002/chem.202004485.


[10] Chiral lanthanide lumino-glass for a circularly polarized light security device,
Yuichi Kitagawa; Satoshi Wada; MD Jahidul Islam; Kenichiro Saita; Masayuki Gon; Koji Fushimi; Kazuo Tanaka; Satoshi Maeda; Yasuchika Hasegawa, Communciations Chemistry, 3, 1 – 5, 2020
DOI: 10.1038/s42004-020-00366-1.
[9] First aggregation-induced emission of a Tb(iii) luminophore based on modulation of ligand–ligand charge transfer bands,
Yuichi Kitagawa; Marina Kumagai; Takayuki Nakanishi; Koji Fushimi; Yasuchika Hasegawa, Dalton Trans., 49, 8, 2431 – 2436, 2020
DOI: 10.1039/D0DT00094A.
[8] First demonstration of π-f orbital interaction depending on coordination geometry in Eu(III) luminophore,
Yuichi Kitagawa; Marina Kumagai; Ferreira da Rosa Pedro Paulo; Koji Fushimi; Yasuchika Hasegawa, Dalton Trans., 49, 10, 3098 – 3101, 2020
DOI: 10.1039/D0DT00528B.
[7] The role of π-f orbital interactions in Eu(III) complexes for an effective molecular luminescent thermometer,
Yuichi Kitagawa; Marina Kumagai; Takayuki Nakanishi; Koji Fushimi; Yasuchika Hasegawa, Inorg. Chem., 59, 9, 5865 – 5871, 2020
DOI: 10.1021/acs.inorgchem.9b03492.
[6] Steric and electronic control of chiral Eu(III) complexes for effective circularly polarized luminescence,
Yuichi Kitagawa; Makoto Tsurui; Yasuchika Hasegawa, ACS Omega, 5, 8, 3786 – 3791, 2020
DOI: 10.1021/acsomega.9b03613.
[5] Luminescent lanthanide complex with seven-coordination geometry,
Pedro Paulo Ferreira da Rosa; Yuichi Kitagawa; Yasuchika Hasegawa, Coord. Chem. Rev., 406, 213153, 2020
DOI: 10.1016/j.ccr.2019.213153.
[4] Stacked nanocarbon photosensitizer for efficient blue light excited Eu(III) emission,
Yuichi Kitagawa; Fumiya Suzue; Takayuki Nakanishi; Koji Fushimi; Tomohiro Seki; Hajime Ito; Yasuchika Hasegawa, Communications Chemistry, 3, 3, 2020
DOI: 10.1038/s42004-019-0251-z .


[3] Lifetimes of Lanthanide(III) Triboluminescence Excited by Aerodynamic Shock Waves,
Yuichi Hirai; Akira Kotani; Hirotaka Sakaue; Yuichi Kitagawa; Yasuchika Hasegawa, J. Phys. Chem. C, 123, 44, 27251 – 27256, 2019
DOI: 10.1021/acs.jpcc.9b08349.
[2] Near-IR luminescent Yb(III) coordination polymers composed of pyrene derivatives for thermo-stable oxygen sensors,
Yasuchika Hasegawa; Takafumi Matsui; Yuichi Kitagawa; Takayuki Nakanishi; Tomohiro Seki; Hajime Ito; Yuta Nakasaka; Takao Masuda; Koji Fushimi, Chem. Eur. J., 25, 53, 12308 – 12315, 2019
DOI: 10.1002/chem.201902583.
[1] Luminescent Lanthanide Complexes, Clusters, Coordination Polymers and Metal-organic Frameworks with Temperature-sensing properties,
Yasuchika Hasegawa; Yuichi Kitagawa, J. Mater. Chem. C, 7, 25, 7494 – 7511, 2019
DOI: 10.1039/c9tc00607a.