HASEGAWA, Yasuchika

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HASEGAWA, Yasuchika
Principal Investigator, Professor
Hokkaido University
Research Areas
Optical Materials Science, Light-emitting materials with high brightness and high durability, macromolecules
Related Website

hasegaway atmark eng.hokudai.ac.jp

HASEGAWA, Yasuchika Group
Principal Investigator
  • thumbnail image
    HASEGAWA, Yasuchika
Faculty Members
Postdoctoral Fellows
Research Collaborators

About the Research

Research Theme

Light-emitting molecular materials with high brightness and durability


Lanthanides, Luminescence, Coordination chemistry, Photochemistry

Research Outline

My research area is lanthanide-based photo-chemistry. In contrast to conventional metal ions, lanthanide ions have 4f orbitals, which accounts for their intriguing magnetic and optical properties. However, 4f orbitals are also very different from the d and π orbitals found in iron, cobalt, or nickel, and they are at present very difficult to understand. Their study requires a combination of fundamental physics, chemistry, and information science.

With the help of information scientists at ICReDD, I hope to be able to design high yield luminescent materials that use only small amounts of excitation energy and luminesce brightly. Examples where such materials would find applications include thermo-sensing and oxygen-sensing materials.

The Researcher’s Perspective

I love cooking. Being a chemist, I realise the importance of minding concentrations to achieve the right ratio of ingredients and a good taste.

Another passion is reading science fiction, especially Arthur C. Clarke. My favourite book is Childhood’s End, a cosmic story of aliens uniting humankind’s minds. Science fiction motivated me to become a scientist when I was an elementary school student, it drove me to specialize in photo-chemistry, and it is still with me.

For details on MANABIYA course topics, please follow this link. To learn more about MANABIYA in general, please click here.

Representative Research Achievements

  • Chameleon Luminophore for Sensing Temperatures: Control of Metal-to-Metal and Energy Back Transfer in Lanthanide Coordination Polymers
    Miyata, Y. Konno, T. Nakanishi, A. Kobayashi, M. Kato, K. Fushimi, Y. Hasegawa, Angew. Chem. Int. Ed., 2013, 52, 6413-641
    DOI : 10.1002/anie.201301448
  • Luminescent EuIII coordination zippers linked with thiophene-based bridges
    Hirai, T. Nakanishi, Y. Kitagawa, K. Fushimi, T. Seki, H. Ito, Y. Hasegawa, Angew. Chem. Int. Ed., 2016, 55, 12059-12062
    DOI : 10.1002/anie.201606371
  • Hyper-stable organo-EuIII luminophore under high temperature for photo-industrial application
    Nakajima, T. Nakanishi, Y. Kitagawa, T. Seki, H. Ito, K. Fushimi, Y. Hasegawa, Scientific Reports, 2016, 6, 24458
    DOI : 10.1038/srep24458
  • Triboluminescence of Lanthanide Coordination Polymers with Face-to-Face Arranged Substituents
    Hirai, T. Nakanishi, Y. Kitagawa, K. Fushimi, T. Seki, H. Ito, Y. Hasegawa, Angew. Chem. Int. Ed., 2017, 56, 7171 –7175
    DOI : 10.1002/anie.201703638
  • Effective photosensirized, electrosensitized, and mechanosensitized luminescence of lanthanide complexes
    Y. Hasegawa, Y. Kitagawa, T. Nakanishi, NPG Asia Mater., 2018, 10: 52-70
    DOI : 10.1038/s41427-018-0012-y

Related Research



  • Luminescent Lanthanide Coordination Polymers with Transformative Energy Transfer Processes for Physical and Chemical Sensing Applications
    Y. Hasegawa, Y. Kitagawa, Journal of Photochemistry and Photobiology C-Photochemistry Reviews, 2022, 51,
    DOI: 10.1016/j.jphotochemrev.2022.100485
  • Tribo-Excited Chemical Reaction Using an Eu-III Complex with a Stacked Anthracene Framework
    Y. Kitagawa, A. Naito, K. Aikawa, K. Shima, S. Shoji, K. Fushimi, Y. Hasegawa, Chem. Eur. J., 2022, ,
    DOI: 10.1002/chem.202104401
  • Luminescent Eu(III)-Based Coordination Polymers for Photonic Materials
    Y. Hasegawa, S. Shoji, Y. Kitagawa, Chem. Lett., 2022, 51, 185-196
    DOI: 10.1246/cl.210650


  • In-Situ Observation of Corrosion Initiation Occurring on NaCI Nanoparticles-Deposited Carbon Steel Surfaces
    K. Fushimi, H. Okuyama, K. Ohshimizu, S. Shoji, Y. Kitagawa, Y. Hasegawa, Tetsu to Hagane-Journal of the Iron and Steel Institute of Japan, 2021, 107, 1011-1019
    DOI: 10.2355/tetsutohagane.TETSU-2021-049
  • Bright Red Emission with High Color Purity from Eu(iii) Complexes with Pi-Conjugated Polycyclic Aromatic Ligands and Their Sensing Applications
    Y. Kitagawa, M. Tsurui, Y. Hasegawa, RSC Advances, 2021, 12, 810-821
    DOI: 10.1039/d1ra08233g
  • Charge-Transfer Excited States of Pi- and 4f-Orbitals for Development of Luminescent Eu(iii) Complexes
    Y. Kitagawa, P. P. F. da Rosa, Y. Hasegawa, Dalton Trans., 2021, ,
    DOI: 10.1039/d1dt03019a
  • Hybrid Eu-III Coordination Luminophore Standing on Two Legs on Silica Nanoparticles for Enhanced Luminescence
    T. Zhang, Y. Kitagawa, R. Moriake, P. P. F. da Rosa, M. J. Islam, T. Yoneda, Y. Inokuma, K. Fushimi, Y. Hasegawa, Chem. Eur. J., 2021, ,
    DOI: 10.1002/chem.202102156
  • Isopyrazole-Masked Tetraketone: Tautomerism and Functionalization for Fluorescent Metal Ligands
    H. Shirakura, Y. Manabe, C. Kasai, Y. Inaba, M. Tsurui, Y. Kitagawa, Y. Hasegawa, T. Yoneda, Y. Ide, Y. Inokuma, European Journal of Organic Chemistry, 2021, , 4345-4349
    DOI: 10.1002/ejoc.202100784
  • Long-Lived Emission Beyond 1000 Nm: Control of Excited-State Dynamics in a Dinuclear Tb(iii)-Nd(iii) Complex
    Y. Kitagawa, K. Matsuda, P. P. F. da Rosa, K. Fushimi, Y. Hasegawa, Chem. Commun., 2021, 57, 8047-8050
    DOI: 10.1039/d1cc03596g
  • Amide-Bridged Eu(III) Coordination Polymer for Stable Luminescent Glass Material
    J. Hayashi, S. Shoji, Y. Kitagawa, K. Fushimi, Y. Hasegawa, Materials Letters, 2021, 297, 4
    DOI: 10.1016/j.matlet.2021.130012
  • Drastic Enhancement of Photosensitized Energy Transfer Efficiency of a Eu(III) Complex Driven by Arsenic
    T. Fujii, Y. Kitagawa, Y. Hasegawa, H. Imoto, K. Naka, Inorg. Chem., 2021, 60, 8605-8612
    DOI: 10.1021/acs.inorgchem.1c00577
  • Active-Passive Transition of an Fe-6 Mass% Cr Surface in Acidic Sodium Sulfate Solutions Under a Laminar Flow Condition Evaluated by Ellipso-Microscopy and Channel Flow Electrode Method
    A. Fujimura, Y. Kitagawa, Y. Hasegawa, T. Doi, K. Fushimi, J. Electrochem. Soc., 2021, 168, 11
    DOI: 10.1149/1945-7111/abfb96
  • Strong Circularly Polarized Luminescence of Mixed Lanthanide Coordination Polymers with Control of 4f Electronic Structures
    M. J. Islam, Y. Kitagawa, M. Tsurui, Y. Hasegawa, Dalton Trans., 2021, 50, 5433-5436
    DOI: 10.1039/d1dt00519g
  • Thermo-Sensitive Eu-III Coordination Polymers with Amorphous Networks
    Y. Hasegawa, N. Sato, J. Hayashi, Y. Kitagawa, K. Fushimi, ChemistrySelect, 2021, 6, 2812-2816
    DOI: 10.1002/slct.202100531
  • Bright Sky-Blue Fluorescence with High Color Purity: Assembly of Luminescent Diphenyl-Anthracene Lutetium-Based Coordination Polymer
    Y. Kitagawa, A. Naito, K. Fushimi, Y. Hasegawa, RSC Advances, 2021, 11, 6604-6606
    DOI: 10.1039/d0ra10795f
  • Coordination Geometrical Effect on Ligand-to-Metal Charge Transfer-Dependent Energy Transfer Processes of Luminescent Eu(III) Complexes
    P. P. F. da Rosa, S. Miyazaki, H. Sakamoto, Y. Kitagawa, K. Miyata, T. Akama, M. Kobayashi, K. Fushimi, K. Onda, T. Taketsugu, Y. Hasegawa, J. Phys. Chem. A, 2021, 125, 209-217
    DOI: 10.1021/acs.jpca.0c09337
  • Long-Range LMCT Coupling in Eu-III Coordination Polymers for an Effective Molecular Luminescent Thermometer**
    Y. Kitagawa, M. Kumagai, P. P. F. da Rosa, K. Fushimi, Y. Hasegawa, Chem. Eur. J., 2021, 27, 264-269
    DOI: 10.1002/chem.202002628


  • Luminescent Lanthanide Complex with Seven-Coordination Geometry
    da Rosa, PPF, Kitagawa, Y, Hasegawa, Y, Coord. Chem. Rev., 2020, 406, 9
    DOI: 10.1016/j.ccr.2019.213153
  • Splitting and Reorientation of Pi-Conjugation by an Unprecedented Photo-Rearrangement Reaction
    Inaba, Y, Yoneda, T, Kitagawa, Y, Miyata, K, Hasegawa, Y, Inokuma, Y, Chem. Commun., 2020, 56, 348-351
    DOI: 10.1039/c9cc09062b
  • First Tribo-Excited Chemical Reaction of a Stacked Lanthanide Coordination Polymer with an in Situ Reaction Monitor
    Y. Kitagawa, A. Naito, K. Fushimi, Y. Hasegawa, Chem. Eur. J., 2020, ,
    DOI: 10.1002/chem.202004485
  • Circularly Polarized Absorption and Luminescence of Semiconductor Eu-OCN Nanocrystals in the Blue Region of the Electromagnetic Spectrum
    Y. Hasegawa, K. Koide, M. Tsurui, Y. Kitagawa, T. Nakanishi, Y. Doi, Y. Hinatsu, K. Fushimi, Chemphyschem, 2020, 21, 2019-2024
    DOI: 10.1002/cphc.202000468
  • An Europium (III) Luminophore with Pressure-Sensing Units: Effective Back Energy Transfer in Coordination Polymers with Hexadentate Porous Stable Networks
    Y. Hasegawa, T. Sawanobori, Y. Kitagawa, S. Shoji, K. Fushimi, Y. Nakasaka, T. Masuda, I. Hisaki, ChemPlusChem, 2020, 85, 1989-1993
    DOI: 10.1002/cplu.202000513
  • Chiral Lanthanide Lumino-Glass for a Circularly Polarized Light Security Device
    Y. Kitagawa, S. Wada, M. D. J. Islam, K. Saita, M. Gon, K. Fushimi, K. Tanaka, S. Maeda, Y. Hasegawa, Communications Chemistry, 2020, 3, 5
    DOI: 10.1038/s42004-020-00366-1
  • Dual Energy Transfer Pathways from an Antenna Ligand to Lanthanide Ion in Trivalent Europium Complexes with Phosphine-Oxide Bridges
    S. Miyazaki, K. Miyata, H. Sakamoto, F. Suzue, Y. Kitagawa, Y. Hasegawa, K. Onda, J. Phys. Chem. A, 2020, 124, 6601-6606
    DOI: 10.1021/acs.jpca.0c02224
  • Dithieno 3,4-b:3',4'-d Arsole: A Novel Class of Hetero 5 Radialenes
    A. Urushizaki, T. Yumura, Y. Kitagawa, Y. Hasegawa, H. Imoto, K. Naka, European Journal of Organic Chemistry, 2020, 2020, 3965-3970
    DOI: 10.1002/ejoc.202000442
  • Aggregation-Induced Emission of a Eu(III) Complex via Ligand-to-Metal Charge Transfer
    Y. Kitagawa, M. Kumagai, K. Fushimi, Y. Hasegawa, Chemical Physics Letters, 2020, 749, 4
    DOI: 10.1016/j.cplett.2020.137437
  • Characteristic Evaluation of Chameleon Luminophore Dispersed in Polymer
    M. Kasai, Y. Sugioka, M. Yamamoto, T. Nagata, T. Nonomura, K. Asai, Y. Hasegawa, Sensors, 2020, 20, 15
    DOI: 10.3390/s20092623
  • The Role of Pi-f Orbital Interactions in Eu(III) Complexes for an Effective Molecular Luminescent Thermometer
    Y. Kitagawa, M. Kumagai, T. Nakanishi, K. Fushimi, Y. Hasegawa, Inorg. Chem., 2020, 59, 5865-5871
    DOI: 10.1021/acs.inorgchem.9b03492
  • Electronic Strain Effect on Eu(III) Complexes for Enhanced Circularly Polarized Luminescence
    M. Tsurui, Y. Kitagawa, K. Fushimi, M. Gon, K. Tanaka, Y. Hasegawa, Dalton Trans., 2020, 49, 5352-5361
    DOI: 10.1039/d0dt00699h
  • First Demonstration of the Pi-f Orbital Interaction Depending on the Coordination Geometry in Eu(III) Luminophores
    Y. Kitagawa, M. Kumagai, P. P. F. da Rosa, K. Fushimi, Y. Hasegawa, Dalton Trans., 2020, 49, 3098-3101
    DOI: 10.1039/d0dt00528b
  • Steric and Electronic Control of Chiral Eu(III) Complexes for Effective Circularly Polarized Luminescence
    Y. Kitagawa, M. Tsurui, Y. Hasegawa, Acs Omega, 2020, 5, 3786-3791
    DOI: 10.1021/acsomega.9b03613
  • Luminescent Coordination Polymers Constructed from a Flexible, Tetradentate Diisopyrazole Ligand and Copper(I) Halides
    T. Yoneda, C. Kasai, Y. Manabe, M. Tsurui, Y. Kitagawa, Y. Hasegawa, P. Sarkar, Y. Inokuma, Chem. Asian J., 2020, 15, 601-605
    DOI: 10.1002/asia.201901682
  • First Aggregation-Induced Emission of a Tb(III) Luminophore Based on Modulation of Ligand-Ligand Charge Transfer Bands
    Y. Kitagawa, M. Kumagai, T. Nakanishi, K. Fushimi, Y. Hasegawa, Dalton Trans., 2020, 49, 2431-2436
    DOI: 10.1039/d0dt00094a
  • Stacked Nanocarbon Photosensitizer for Efficient Blue Light Excited Eu(III) Emission
    Y. Kitagawa, F. Suzue, T. Nakanishi, K. Fushimi, T. Seki, H. Ito, Y. Hasegawa, Communications Chemistry, 2020, 3, 7
    DOI: 10.1038/s42004-019-0251-z


  • Thermo-Sensitive Luminescence of Lanthanide Complexes, Clusters, Coordination Polymers and Metal-Organic Frameworks with Organic Photosensitizers
    Y. Hasegawa, Y. Kitagawa, J. Mater. Chem. C, 2019, 7, 7494-7511
    DOI: 10.1039/c9tc00607a
  • Near-IR Luminescent YbIII Coordination Polymers Composed of Pyrene Derivatives for Thermostable Oxygen Sensors
    Y. Hasegawa, T. Matsui, Y. Kitagawa, T. Nakanishi, T. Seki, H. Ito, Y. Nakasaka, T. Masuda, K. Fushimi, Chem. Eur. J., 2019, 25, 12308-12315
    DOI: 10.1002/chem.201902583
  • Thermal and Crystallographic Investigation of Luminescent Eu(III) Coordination Polymers with Dithiane and Dioxane Hexyl Rings
    Y. Hirai, PPF. da Rosa, Y. Kitagawa, Y. Hasegawa, Chem. Lett., 2019, 48, 1544-1546
    DOI: 10.1246/cl.190752
  • Lifetimes of Lanthanide(III) Triboluminescence Excited by Aerodynamic Shock Waves
    Y. Hirai, A. Kotani, H. Sakaue, Y. Kitagawa, Y. Hasegawa, J. Phys. Chem. C, 2019, 123, 27251-27256
    DOI: 10.1021/acs.jpcc.9b08349
  • Olefin-Accelerated Solid-State C-N Cross-Coupling Reactions Using Mechanochemistry
    K. Kubota, T. Seo, K. Koide, Y. Hasegawa, H. Ito, Nat. Commun., 2019, 10,
    DOI: 10.1038/s41467-018-08017-9
  • Photoluminescence Properties of [Core plus exo]-Type Au-6 Clusters: Insights into the Effect of Ligand Environments on the Excitation Dynamics
    Y. Shichibu, MZ. Zhang, T. Iwasa, Y. Ono, T. Taketsugu, S. Omagari, T. Nakanishi, Y. Hasegawa, K. Konishi, J. Phys. Chem. C, 2019, 123, 6934-6939
    DOI: 10.1021/acs.jpcc.9b01810