Masako Kato

Department of Applied Chemistry for Environment School of Biological and Environmental Sciences, Kwansei Gakuin University
Professor
Area leader A01 Group leader
A01-01

Research AreasCoordination Chemistry, Photochemistry

Control of Stimulus-response and Functionalization of Luminescent Smart Soft Crystals

Keywords
Soft Crystal, Flexible Ordering, Stimulus Response, Photofunction, Chromic Metal Complex, Luminescence, Phase Transition, Organic Crystal, Vapochromism
Co-Researcher
Co-Investigator: Michito Shiotsuka (Department of Life Science and Applied Chemistry, Nagoya Institute of Technology, Associate Professor)
Co-Investigator: Toshiki Mutai (Institute of Industrial Science, The University of Tokyo, Assistant professor)
Co-Researcher: Atsushi Kobayashi (Department of Chemistry, Faculty of Science, Hokkaido University, Associate Professor)
Co-Researcher: Masaki Yoshida (Department of Chemistry, Faculty of Science, Hokkaido University, Assistant Professor)
Co-Researcher: Sun Yu (Institute for the Advancement of Higher Education, Hokkaido University, Associate Professor)

Research Outline

This project aims the development of luminescent soft crystals which respond to environmental stimuli such as vapor, light, heat, and mechanical force sensitively and/or specifically. For this purpose, chromic metal complexes, organic p-systems, and supramolecular materials will be further explored and their properties will be investigated in details to elucidate the principals of these phenomena. The collaboration with researchers of various fields as one project team would not only promote the development of new systems of metal complexes, organic molecules, and supermolecules effectively, but also produce new concepts and the breakthrough by the synergetic effects. In addition, such sophisticated stimulus-responsive materials will be applied to fabricate novel devices in collaboration with other teams in this research area. Through the research, this team leads the establishment of science and functionalization of softcrystals.

Luminescent metal-complex crystals which exhibit chromic phenomena
Construction of stimulus-responsive multi-layer systems having flexible and high order.

Representative Achievements

  • Methanol-triggered Vapochromism Coupled with Solid-state Spin Switching in a Ni(II)-quinonoid Complex, P. Kar, M. Yoshida, Y. Shigeta, A. Usui, A. Kobayashi, T. Minamidate, N. Matsunaga and M. Kato, Angew. Chem. Int. Ed., 2017, 56, 2345–2349. (Back Cover Picture)
    DOI: 10.1002/anie.201611085
  • Effect of Water Coordination on Luminescent Properties of Pyrazine-Bridged Dinuclear Cu(I) Complexes, A. Kobayashi, R. Arata, T. Ogawa, M. Yoshida and M. Kato, Inorg. Chem., 2017, 56, 4280–4288. DOI: 10.1021/acs.inorgchem.6b02578. (Cover Art)
    DOI: 10.1021/acs.inorgchem.6b02578
  • Shape-memory Platinum(II) Complexes: Intelligent Vapor-History Sensor with ON-OFF Switching Function, Y. Shigeta, A. Kobayashi, T. Ohba, M. Yoshida, T. Matsumoto, H.-C. Chang and M. Kato, Chem., Eur. J. 2016, 22, 2682–2690. (Cover picture)
    DOI: 10.1002/chem.201503247
  • Synthesis of Metal-Hydrazone Complexes and Vapochromic Behavior of Their Hydrogen-Bonded Proton-Transfer Assemblies, A. Kobayashi, M. Dosen, M. Chang, K. Nakajima, S. Noro, and M. Kato, J. Am. Chem. Soc., 2010, 132, 15286−15298.
    DOI: 10.1021/ja1063444
  • Vapor-Induced Luminescence Switching in Crystals of the Syn Isomer of a Dinuclear (Bipyridine)platinum(II) Complex Bridged with Pyridine-2-Thiolate Ions, M. Kato, A. Omura, A. Toshikawa, S. Kishi and Y. Sugimoto, Angew. Chem., Int. Ed., 2002, 41, 3183−3185.
    DOI: 10.1002/1521-3773(20020902)41:17<3183::AID-ANIE3183>3.0.CO;2-A

Publications

Category

Academic papers/reviewed

  1. "Reversible and stepwise single-crystal-to-single-crystal transformation of a platinum(II) complex with vapochromic luminescence", D. Saito, T. Galica, E. Nishibori, M. Yoshida, A. Kobayashi, *M. Kato, Chem. Eur. J., e202200703 (2022). (領域内共同研究) (cover picture)
  2. "Fabrication of Ru-dye-sensitized Photoanodes Composed of a Prussian White-Prussian Blue Heterojunction toward Water Oxidation", *A. Kobayashi, H. Otsuka, M. Yoshida, M. Kato, Chem. Lett., accepted (2022)
  3. "Multicolor detection with vapochromism of platinum(II) 3,8-bis-(2-triethylsilylethynyl)-phenanthroline organometallic complexes with bis-arylethynyl derivatives" *M. Shiotsuka, M. Ogihara, T. Hanada, K. Kasai, J. Organomet. Chem., 965-966, 122334 (2022).
  4. "Thermo- and Mechano-triggered Luminescence ON/OFF Switching by Supercooled Liquid/Crystal Transition of Platinum(II) Complex Thin Films", M. Yoshida*, V. Sääsk, D. Saito, N. Yoshimura, J. Takayama, S. Hiura, A. Murayama, K. Põhako-Esko, A. Kobayashi and M. Kato*, Adv. Opt. Mater., 2022, 2102614. DOI: 10.1002/adom.202102614, 2102614.N. (Back cover)(プレスリリース)
  5. "Thermo- and Mechano-triggered Luminescence ON/OFF Switching by Supercooled Liquid/Crystal Transition of Platinum(II) Complex Thin Films", *M. Yoshida, V. Sääsk, D. Saito, N. Yoshimura, J. Takayama, S. Hiura, A. Murayama, K. Põhako-Esko, A. Kobayashi and *M. Kato, Adv. Opt. Mater., 2102614 (2022). (国際共同研究) (Back Cover)
  6. "New aspects of vapochromic metal complexes: Cooperative phenomena in functions and structures", *M. Kato, M. Yoshida, Y. Sun and A. Kobayashi, J. Photochem. Photobio. C: Photochem. Rev., 51, 100477 (2022).
  7. "Interfacial Electron Flow Control by Double Nano-architectures for Efficient Ru-Dye-Sensitized Hydrogen Evolution from Water", Yoshimura, A. Kobayashi*, T. Kondo, R. Abe, M. Yoshida, M. Kato, ACS Appl. Energy Mater., 4, 14352–14362 (2021). (領域外共同研究)
  8. "Carbazole modification of Ruthenium Bipyridine–dicarboxylate Oxygen Evolution Molecular Catalyst", H. Otsuka, *A. Kobayashi, M. Yoshida, M. Kato, Dalton Trans., 50, 16233–16241 (2021).
  9. "Computational studies for crystal structures of helicate lanthanide complexes based on X-ray analyses", *N. Nakayama, M. Hijikata, H. Ohmagari, H. Tanaka, Y. Inazuka, D. Saito, S. Obata, K. Ohta, *M. Kato, *H. Goto, *M. Hasegawa, Bull. Chem. Soc. Jpn., 94, 2973–2981 (2021). (領域内共同研究 A02後藤 A03長谷川美貴)
  10. "Meso-/Microscopic Single Particle Analyses of Vapochromic Solid State Crystallization in [Pt(CN)2(H2dcbpy)]", *K. Ishii, S. Takanohashi, M. Karasawa, K. Enomoto, Y. Shigeta, *M. Kato, J. Phys. Chem. C, 125, 21055−21061 (2021). (Cover Picture) (領域内共同研究 A03-01石井)
  11. "Halide Replacement Effect on Proton Conductivity and Vapochromic Luminescence of Pt(II) Complexes", *A. Kobayashi, S. Imada, Y. Yao, Y. Nagao, Y. Kubota, M. Yoshida, *M. Kato, Bull. Chem. Soc., 94, 2466–2473 (2021). (領域外共同研究)
  12. "Elastic deformability and luminescence of crystals of polyhalogenated platinum(II)-bipyridine complexes", *M. Yoshida, Y. Makino, T. Sasaki, A. Kobayashi, *M. Kato, CrystEngComm, 23, 5891–5898 (2021). (領域内共同研究 A01-02高見澤)
  13. "Two Excited State Collaboration of Heteroleptic Ir(III)-Coumarin Complexes for H2 Evolution Dye-Sensitized Photocatalysts", *A. Kobayashi, E. Muramatsu, M. Yoshida, *M. Kato, Energies, 14, 2425 (2021).
  14. "Vapochromic Behaviour of a Nickel(II)-quinonoid Complex with Dimensional Changes Between 1D and Higher", R. Yano, *M. Yoshida, T. Tsunenari, A. Sato-Tomita, S. Nozawa, Y. Iida, N. Matsunaga, A. Kobayashi, *M. Kato, Dalton Trans., 50, 8696–8703 (2021). (Back Cover) (領域内/領域外共同研究 A02-3佐藤) (Back Cover)
  15. "Cooperative phenomenon of vapochromism and proton conduction of luminescent Pt(II) complexes for the visualisation of proton conductivity", *A. Kobayashi, S. Imada, D. Wang, Y. Nagao, M. Yoshida, *M. Kato, Faraday Discuss., 225,184–196 (2021). (領域外共同研究)
  16. "Synthesis, characterization of calix[5]azulene and its complexation with pyridinium salts", Y. Jin, K. Akagawa, T. Mutai, I. Yoshikawa, *K. Kudo, Tetrahedron, 88, 132146 (2021).
  17. "Vapochromic luminescence of a spin-coated copper(I) complex thin film by the direct coordination of vapour molecules" S. Kondo, N. Yoshimura, M. Yoshida, A. Kobayashi, *M. Kato, Dalton Trans., 49, 16946-16953 (2020).
  18. "Enhancement of Photocatalytic Activity for Hydrogen Production by Surface Modification of Pt-TiO2 Nanoparticles with a Double Layer of Photosensitizers" N. Yoshimura, *A. Kobayashi, M. Yoshida, *M. Kato, Chem. Eur. J., 26,16939-16946 (2020).
  19. "Liquid-liquid interface-promoted formation of a porous molecular crystal based on a luminescent platinum(II) complex" M. Kimura, *M. Yoshida, S. Fujii, A. Miura, K. Ueno, Y. Shigeta, A. Kobayashi, *M. Kato, Chem. Commun., 56, 12989-12992 (2020).
  20. "Intense Red-Blue Luminescence Based on Superfine Control of Metal-Metal Interactions for Self-Assembled Platinum(II) Complexes" D. Saito, T. Ogawa, M. Yoshida, J. Takayama, S. Hiura, A. Murayama, A. Kobayashi, *M. Kato, Angew. Chem. Int. Ed., 59, 18723-18730 (2020).
  21. "Quantitative thermal synthesis of Cu(I) coordination polymers that exhibit thermally activated delayed fluorescence" *A. Kobayashi, T. Ehara, M. Yoshida, *M. Kato, Inorg. Chem., 59, 9511-9520 (2020).
  22. "Photosensitizing Ruthenium(II)-Dye Multilayers: Photoinduced Charge Separation and Back Electron Transfer Suppression" N. Yoshimura, *A. Kobayashi, W. Genno, T. Okubo, M. Yoshida, *M. Kato, Sustain. Energy Fuels, 4, 3450-3457 (2020). (領域内共同研究 A03 公募 大久保)
  23. "Delocalization of Excited State and Emission Spectrum of Platinum(II) Bipyridine Complex in Crystal: Periodic QM/MM Study" M. Nakagaki, S. Aono, M. Kato, *S. Sakaki, J. Phys. Chem. C, 124, 10453-10461 (2020). (領域内共同研究 A01 公募 榊)
  24. "Bright Luminescent Platinum(II)-biaryl Emitters Synthesized Without Air-sensitive Reagents" C. Wakasugi, *M. Yoshida, W. M. C. Sameera, Y. Shigeta, A. Kobayashi, *M. Kato, Chem. Eur. J., 26, 5449-5448 (2020).
  25. "Vapochromism and vapoluminescence of platinum(II) 3,8-bis-(3-hydroxy-3-methylbut-1-yn-1-yl)-phenanthroline organometallic complexes with bis-arylethynyl derivatives" *M. Shiotsuka, A. Goto, S. Miura, H. Uekusa, R. Ono, J. Organomet. Chem., 929, 121554 (2020). (領域内共同研究 A01 公募 植草)
  26. "A superelastochromic crystal" *T. Mutai, T. Sasaki, S. Sakamoto, I. Yoshikawa, H. Houjou, *S. Takamizawa, Nat. Commun. 11, 1824 (2020). (Editor’s Highlights) (領域内共同研究 A01-02 高見澤)
  27. "Cation-controlled Luminescent Behavior of Anionic Cyclometalated Platinum(II) Complexes" M. Yoshida, *M. Kato, Coord. Chem. Rev., 408, 213194 (2020).
  28. "Phosphorescence Properties of Anionic Cyclometalated Platinum(II) Complexes with Fluorine-substituted Tridentate Diphenylpyridine in the Solid State", T. Ogawa, W. M. C. Sameera, M. Yoshida, A. Kobayashi, *M. Kato, Chem. Phys. Lett., 739, 137024 (2020).
  29. "Aromatic versus Aliphatic α-Diimine Ligands in Heteroleptic Copper(I) Emitters: Photophysical and Electrochemical Properties" *M. Yoshida, S. Yanagida, D. Saito, A. Kobayashi, *M. Kato, Anal. Sci., 36, 67-73 (2020).
  30. "Vapochromic Luminescent Proton Conductors: Switchable Vapochromism and Proton Conduction of Luminescent Pt(II) Complexes with Proton-exchangeable Sites" *A. Kobayashi, S. Imada, Y. Shigeta, Y. Nagao, M. Yoshida, *M. Kato, J. Mater. Chem. C, 7, 14923-14931 (2019).
  31. "Fast and Stable Vapochromic Response Induced Through Nanocrystal Formation of a Luminescent Platinum(II) Complex on Periodic Mesoporous Organosilica", H. Matsukawa, M. Yoshida, T. Tsunenari, S. Nozawa, A. Sato-Tomita, Y. Maegawa, S. Inagaki, A. Kobayashi, *M. Kato, Sci. Rep., 9, 15151 (2019). (領域内共同研究 A02-03 佐藤)
  32. "A Systematic Study on the Double-layered Photosensitizing Dye Structure on the Surface of Pt-cocatalyst-loaded TiO2 Nanoparticles", N. Yoshimura, *A. Kobayashi, M. Yoshida, *M. Kato, Bull. Chem. Soc. Jpn., 92, 1793-1800 (2019). (Selected Paper)
  33. "Insight into the Origin of Competitive Emission of Copper(I) Complexes Bearing Diimine and Diphosphine Ligands", S. Yanagida, M. Yoshida, W. M. C. Sameera, A. Kobayashi and *M. Kato, Bull. Chem. Soc. Jpn., 92, 1684-1693 (2019).
  34. "Photochromism of salicylideneanilines bearing super bulky substituents: Single-crystal UV-vis spectroscopic examination of bleaching under variable temperature and visible-light irradiation", Y. Suzuki, T. Kato, H. Huang, I. Yoshikawa, T. Mutai, *H. Houjou, J. Photochem. Photobiol. A, 385, 112096-112105 (2019).
  35. "Robust Triplatinum Redox-chromophore for a Post-synthetic Color-tunable Electrochromic System", *M. Yoshida, H. Shitama, W. M. C. Sameera, A. Kobayashi, *M. Kato, Chem. Eur. J., 25, 7669-7678 (2019). (Hot paper, Inside Cover Art)
  36. "Surfactant-assisted Synthesis of Large Cu-BTC MOFs Single Crystals and the Potential Utilization as Photodetectors", *Y. Sun, M. Amsler, S. Goedecker, A. Caravella, M. Yoshida, *M. Kato, CrystEngComm, 21, 3948-3953 (2019).
  37. "Stability tuning of vapor-adsorbed state of vapochromic Pt(II) complex by introduction of chiral moiety", Y. Shigeta, *A. Kobayashi, M. Yoshida, *M. Kato, Inorg. Chem., 58, 7385-7392 (2019).
  38. "Soft Crystals‐Flexible Response Systems with High Structural Order" *M. Kato, H. Ito, M. Hasegawa, K. Ishii, Chem. Eur. J., 25, 5105-5112 (2019). (領域内共同研究 A02-01 伊藤、A03-01 石井、A03-02 長谷川)
  39. "Quantitative Solvent-Free Thermal Synthesis of Luminescent Cu(I) Coordination Polymers", *A. Kobayashi, M. Fujii, Y. Shigeta, M. Yoshida, *M. Kato, Inorg. Chem., 58, 4456-4464 (2019).
  40. "Two-step Vapochromic Luminescence of Proton-conductive Coordination Polymers Composed of Ru(II)-metalloligands and Lanthanide Cations" *A. Kobayashi, K. Shimizu, A. Watanabe, Y. Nagao, N. Yoshimura, M. Yoshida, *M. Kato, Inorg. Chem., 58, 2413-2421 (2019).
  41. "Development of Imidazo[1,2- a]pyridine Derivatives with an Intramolecular Hydrogen-Bonded Seven-Membered Ring Exhibiting Bright ESIPT Luminescence in the Solid State", *T. Mutai, T. Muramatsu, I. Yoshikawa, H. Houjou, M. Ogura, Org. Lett., 21, 2143-2146 (2019).
  42. “Excited-State Intramolecular Proton-Transfer Process of Crystalline 6-Cyano-2-(2’-hydroxyphenyl)imidazo[1,2a]pyridine, as Revealed by Femtosecond Pump–Probe Microspectroscopy” Y. Ishibashi, M. Murakami, K. Araki, T. Mutai, *T. Asahi, J. Phys. Chem. C, 123, 11224-11232 (2019).
  43. "Effect of the Chirality of Counter Anions on the Vapochromic Behavior of Luminescent Pt(II) Complexes" Y. Shigeta, *A. Kobayashi, M. Yoshida, *M. Kato, Eur. J. Inorg. Chem., 2019, 1011-1017 (2019).
  44. "The Effect of Pyridyl Anchoring Groups at the Surfaces of Ru(II)-dye-sensitized TiO2 Nanoparticles on Photocatalytic Oxygen Evolution" H. Otsuka, *A. Kobayashi, M. Yoshida, *M. Kato, J. Photochem. Photobiol. A: Chem., 369, 189-194 (2019).
  45. "Photoluminescence of platinum(II) diethynylphenanthroline organometallic complexes with bis-arylethynyl derivatives in solution and solid state" *M. Shiotsuka, R. Ono, Y. Kurono, T. Asano, Y. Sakae, J. Organomet. Chem., 880, 116-123 (2019).
  46. "Re-evaluation of tert-butyl method in crystal engineering of salicylideneanilines by simultaneous observation of photochromism and thermochromism in single crystals" *H. Houjou, T. Kato, H. Huang, Y. Suzuki, I. Yoshikawa, T. Mutai, Cryst. Growth Des., 19, 1384-1390 (2019).
  47. "Phosphorescence Properties of Discrete Platinum(II) Complex Anions Bearing N-heterocyclic Carbenes in the Solid State" T. Ogawa, W. M. C. Sameera, D. Saito, M. Yoshida, A. Kobayashi, *M. Kato, Inorg. Chem., 57, 14086-14096 (2018). (Supplementary Cover Art)
  48. "Photocatalytic Hydrogen Evolution Driven by Platinated CdS Nanorods with a Hexacyanidoruthenate Redox Mediator" H. Kitano, *A. Kobayashi, M. Yoshida, *M. Kato, Sustain. Energy Fuels, 2, 2609-2615 (2018). (Cover Art)
  49. "Mechanochromic Switching between Delayed Fluorescence and Phosphorescence of Luminescent Coordination Polymers Composed of Dinuclear Copper(I) Iodide Rhombic Cores" *A. Kobayashi, Y. Yoshida, M. Yoshida, *M. Kato, Chem. Eur. J., 24, 14750-14759 (2018).
  50. "Importance of the Molecular Orientation of an Ir(III)-heteroleptic Photosensitizer Immobilized on TiO2 Nanoparticles" *A. Kobayashi, S. Watanabe, M. Yoshida, *M. Kato, ACS Appl. Energy Mater., 1, 2882-2890 (2018).
  51. "Crystal Engineering of Vapochromic Porous Crystals Composed of Pt(II)-diimine Luminophores for Vapor History Sensors" Y. Shigeta, A. Kobayashi, M. Yoshida, *M. Kato, Cryst. Growth Des., 18, 3419-3427 (2018).
  52. "Solvent-free Thermal Synthesis of Luminescent Dinuclear Cu(I) Complexes with Triarylphosphines" P. Liang, *A. Kobayashi, W. M. C. Sameera, M. Yoshida, *M. Kato, Inorg. Chem., 57, 5929-5938 (2018).
  53. "Alternative preparation and characterization of platinum(II) organometallic dinuclear complexes and oligomers with 3,8‑diethynylphenanthroline derivatives" *M. Shiotsuka, T. Hashimoto, K. Matsubara, K. Sako, Trans. Met. Chem., 43, 693-703 (2018).
  54. "Luminescent Ionic Liquids Based on Cyclometalated Platinum(II) Complexes Exhibiting" T. Ogawa, W. M. C. Sameera, M. Yoshida, A. Kobayashi, *M. Kato, Dalton Trans., 47, 5589-5594 (2018).(Back Cover)
  55. "Two-way Vapochromism of a Luminescent Platinum(II) Complex with Phosphonic-acid-functionalized Bipyridine Ligand" *A. Kobayashi, N. Yamamoto, Y. Shigeta, M. Yoshida, *M. Kato, Dalton Trans., 47, 1548-1566 (2018).
  56. "Regulation of metal–metal interactions and chromic phenomena of multi-decker platinum complexes having π-systems", M. Yoshida, *M. Kato., Coord. Chem. Rev., 355, 101-115 (2018).
  57. "Immobilization of Luminescent Platinum(II) Complexes on Periodic Mesoporous Organosilica and their Water Reduction Photocatalysis" M. Yoshida, K. Saito, H. Matsukawa, S. Yanagida, M. Ebina, Y. Maegawa, S. Inagaki, A. Kobayashi, *M. Kato, J. Photochem. Photobiol. A: Chem., 358, 334-344 (2018).
  58. "Thermal and Mechanochemical Syntheses of Luminescent Mononuclear Copper(I) Complexes" P. Liang, A. Kobayashi, T. Hasegawa, M. Yoshida, *M. Kato, Eur. J. Inorg. Chem., 44, 5134-5142 (2017).

Review article, commentary, criticism etc.

  • "Luminescent Crystal–Control of Excited-State Intramolecular Proton Transfer (ESIPT) Luminescence Through Polymorphism" in Advances in Organic Crystal Chemistry (ed. by Masami Sakamoto and Hidehiro Uekusa), Toshiki Mutai, Springer Nature, Singapore, 2020, pp 271-298. 2015.9.23. 総頁数538, 担当:第14章 271-298.

Domestic conferences

Media, Outreach activity, Patent, others

  • "Luminescent Crystal–Control of Excited-State Intramolecular Proton Transfer (ESIPT) Luminescence Through Polymorphism" in Advances in Organic Crystal Chemistry (ed. by Masami Sakamoto and Hidehiro Uekusa), Toshiki Mutai, Springer Nature, Singapore, 2020, pp 271-298. 2015.9.23. 総頁数538, 担当:第14章 271-298.

International conferences

  1. M. Kato, "New trend of vapoluminescence using platinum(II) complexes", The International Chemical Congress of Pacific Basin Societies 2021 (PACIFICHEM 2021), #250, Invited (ID: 3439636), 2021.12.16-21, online.
  2. " Vapor-induced reconstruction of mechanoluminescent metal complexes", M. Kato (Invited (ID: 3440195)),The International Chemical Congress of Pacific Basin Societies 2021 (PACIFICHEM 2021), #297, 2021.12.16-21, online.
  3. "Intense Red-Blue Luminescence Based on Superfine Control of Metal–Metal Interactions for Self-Assembled Platinum(II) Complexes", M. Kato, 4th International Symposium on the Photofunctional Chemistry of Complex Systems (ISPCCS2021) joint with 3rd International Symposium on Soft Crystals (ISSC) and IIS UTokyo Symposium, Invited/organizer, 2021.12.11-15, Hawaii, USA (Hybrid). 
  4. "Luminescent Soft Crystals that Exhibit Color Changes in Response to Vapor", M. Kato, 11th Asian Photochemistry Conference (APC 2021), Invited (MoC2-02-3), 2021.11.1-4 online.
  5. "New trend of vapoluminescence using platinum(II) complexes", M. Kato (Invited (ID: 3439636)) The International Chemical Congress of Pacific Basin Societies 2021 (PACIFICHEM 2021), #250, 2021.12.16-21, online.
  6. "Vapoluminescence of platinum complexes with bis-TMS-, TES-, TIPS-ethynylphenanthrolines and arylethynyl ligands including fluoride substituents " M. Shiotsuka, PACIFICHEM2021, The Chemical Society of Japan (USA, Dec. 16-21, 2021)
  7. M. Kato, " Vapor-induced reconstruction of mechanoluminescent metal complexes", The International Chemical Congress of Pacific Basin Societies 2021 (PACIFICHEM 2021), #297, Invited (ID: 3440195), 2021.12.16-21, online.
  8. M. Kato, "Intense Red-Blue Luminescence Based on Superfine Control of Metal–Metal Interactions for Self-Assembled Platinum(II) Complexes", 4th International Symposium on the Photofunctional Chemistry of Complex Systems (ISPCCS2021) joint with 3rd International Symposium on Soft Crystals (ISSC) and IIS UTokyo Symposium, Invited/organizer, 2021.12.11-15, Hawaii, USA (Hybrid). 
  9. M. Kato, "Luminescent Soft Crystals that Exhibit Color Changes in Response to Vapor", 11th Asian Photochemistry Conference (APC 2021), Invited (MoC2-02-3), 2021.11.1-4 online.
  10. M. Shiotsuka, Vapoluminescence of platinum complexes with bis-TMS-, TES-, TIPS-ethynylphenanthrolines and arylethynyl ligands including fluoride substituents " PACIFICHEM2021, The Chemical Society of Japan (USA, Dec. 16-21, 2021)
  11. "Cooperative phenomena of Vapochromism and proton condution of luminescent Pt(II) complexes for the visualisation of proton conductivity" A. Kobayashi, Shin-ichiro Imada, Dongjin Wang, Yuki Nagao, Masaki Yoshida, and Masako Kato, Cooperative phenomena in framework materials: Faraday Discussion, Royal Society of Chemistry (United Kingdom, Oct. 13-16, 2020)
  12. "Cooperative phenomena of Vapochromism and proton condution of luminescent Pt(II) complexes for the visualisation of proton conductivity" A. Kobayashi, Shin-ichiro Imada, Dongjin Wang, Yuki Nagao, Masaki Yoshida, and Masako Kato, Cooperative phenomena in framework materials: Faraday Discussion, Royal Society of Chemistry (United Kingdom, Oct. 13-16, 2020)
  13. "Solid state emission and vapochromism of bis-arylethynyl platinum complexes with different diethynylphenanthrolines including TMS and TIPS substituent" M. Shiotsuka, Cooperative phenomena in framework materials: Faraday Discussion, Royal Society of Chemistry (United Kingdom, Oct. 13-16, 2020)
  14. "Solid state emission and vapochromism of bis-arylethynyl platinum complexes with different diethynylphenanthrolines including TMS and TIPS substituent" M. Shiotsuka, Cooperative phenomena in framework materials: Faraday Discussion, Royal Society of Chemistry (United Kingdom, Oct. 13-16, 2020)
  15. "Color-tunable Electrochromism and Mixed-valency of a Triple-decker Platinum Complex" M. Yoshida, H. Shitama, W.M.C. Sameera, A. Kobayashi, M. Kato, 6th Asian Conference on Coordination Chemistry (Melbourne, Australia, Jul. 23-28, 2017)
  16. "Control of Luminescence Properties in Cu(I) Complexes" M. Kato (Invited), Applications of Photoactive Coordination Compounds conference (Scotland, UK, Jul. 5-7, 2017)
  17. "Methanol-Triggered Vapochromism Coupled with Spin Switching in a Ni(II)-quinonoid Complex" M. Kato (Invited), 11th Japan-China Joint Symposium on Metal Cluster Compounds (Naogoya, Japan, Oct.7-10, 2017)
  18. "Methanol-triggered vapochromism coupled with spin switching in a Ni(II)-quinonoid complex" M. Kato (Invited), 6th Asian Conference on Coordination Chemistry (Melbourne, Australia, Jul. 23-28, 2017)
  19. "Methanol-Triggered Vapochromism Coupled with Spin Switching in a Ni(II)-quinonoid Complex" M. Kato (Invited), The 4th Japan-Canada Joint Symposium on Coordination Chemistry (Fukuoka, Japan, Nov. 27-30, 2017)
  20. "Multi-layered Ru(II)-dye-sensitized Nanoparticle-Photocatalyst for Water Splitting Reaction" A. Kobayashi, S. Furugori, M. Yoshida, M. Kato, 22nd International Symposium on the Photophysics and Photochemistry of Coordination Compounds (Oxford, UK, Jul. 9-14, 2017)
  21. "Multicolored electrochromism and luminescence of a redox-active double-decker platinum complex" M. Yoshida, N. Yashiro, H. Shitama, A. Kobayashi, M. Kato, The 13th Nanjing University-Hokkaido University-NIMS-Jiaxing University Joint Symposium (jiaxing, China, Oct.24-28, 2017)
  22. "Organic supramolecules showing stimuli-responsive luminescence" T. Mutai (Invited), Feringa Academic Alumni Symposium, Chemistry for the Future (Groningen, Netherlands, Sep. 14-15, 2017)
  23. "Platinum complexes exhibiting intense luminescence and chromic phenomena" M. Kato (Invited), 28th International Conference on Photochemistry (Strasbourg, France, Jul. 16-21, 2017)
  24. "Self-organization and reactivity of photoactive platinum(II) supramolecular complexes" R. Kawabe, Y. Iti, T. Toda, K. Sako, M. Shiotsuka, 2nd FRIMS International Symposium on Frontier Materials (Naogoya, Japan, Feb. 1-2, 2018)
  25. "Solvent-free Synthesis and Luminescent Properties of Mononuclear Cu(I) Complexes" P. Liang, T. Hasegawa, M. Yoshida, A. Kobayashi, M. Kato, 22nd International Symposium on the Photophysics and Photochemistry of Coordination Compounds (Oxford, UK, Jul. 9-14, 2017)
  26. "Solvent-free thermal synthesis of luminescent mononuclear Cu(I) complexes with isoquinoline derivatives" P. Liang, M. Yoshida, A. Kobayashi, M. Kato, The 13th Nanjing University-Hokkaido University-NIMS-Jiaxing University Joint Symposium (jiaxing, China, Oct.24-28, 2017)
  27. "Stimulus-responsive Metal Complexes Exhibiting Strong Luminescence and Chromic Phenomena" M. Kato (Invited), Department Seminar (Hsinchu, Taiwan, Dec. 15-15, 2017)
  28. "Surface enhanced raman scattering study of phenanthroline derivatives and their ruthenium complexes attached on gold or silver nanoparticles" R. Hibako, S. Imaoka, Y. Matsuoka, K. Sako, M. Shiotsuka, 3rd FRIMS International Symposium on Frontier Materials (Naogoya, Japan, Feb. 1-2, 2018)
  29. "Vapor-Responsive Metal Complexes Exhibiting Chromic Phenomena" M. Kato (Invited), The 4th Japan-Taiwan-Singapore-Hong Kong Quadrilateral Symposium on Coordination Chemistry (Hong Kong, China, Dec. 10-12, 2017)

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katom[at]kwansei.ac.jp