HASEGAWA, Yasuchika

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HASEGAWA, Yasuchika
Principal Investigator
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
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    HASEGAWA, Yasuchika
Faculty Members
Postdoctoral Fellows

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 Complex with Seven-Coordination Geometry
    PPF. da Rosa, Y. Kitagawa, Y. Hasegawa, Coord. Chem. Rev., 2020, 406, 1-9
    DOI: 10.1016/j.ccr.2019.213153
  • Splitting and Reorientation of π-Conjugation by an Unprecedented Photo-Rearrangement Reaction
    Y. Inaba, T. Yoneda, Y. Kitagawa, K. Miyata, Y. Hasegawa, Y. Inokuma, Chem. Commun., 2020, 56, 348-351
    DOI: 10.1039/c9cc09062b


  • 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