So YokomoriAssistant Professor

■Researcher basic information

Organization

  • Graduate School of Science and Engineering（Master's Program） Major in Quantum Bean Science
  • College of Science Department of Sciences Chemistry
  • Faculty of Basic Natural Science Domain of Chemistry

Research Areas

  • Natural sciences, Magnetism, superconductivity, and strongly correlated systems
  • Nanotechnology/Materials, Inorganic and coordination chemistry
  • Nanotechnology/Materials, Functional solid-state chemistry

Research Keyword

  • Vapochromism
  • Electrical conductivity
  • Magnetism
  • Functional molecular crystal
  • Hydrogen bonding
  • Metal dithiolene complex

Degree

  • 2021年3月　博士（理学）（東京大学）
  • 2018年3月　修士（理学）（東京大学）

Educational Background

  • Apr. 2018 - Mar. 2021, The University of Tokyo, Graduate School of Science Doctoral Program, Depertment of Chemistry
  • Apr. 2016 - Mar. 2018, The University of Tokyo, Graduate School of Science, Department of Chemistry
  • Apr. 2012 - Mar. 2016, Shinshu University, Faculty of Science, Depertment of Chemistry

Career

  • Apr. 2025 - Present, Ibaraki University, Graduate School of Science and Engineering Department of Science (Chemistry Course), Assistant Professor
  • Apr. 2022 - Mar. 2025, Rikkyo University, College of Science Department of Chemistry, Assistant Professor
  • Apr. 2021 - Mar. 2022, The University of Tokyo, The Institute for Solid State Physics, 日本学術振興会 特別研究員PD
  • Apr. 2020 - Mar. 2021, The University of Tokyo, Graduate School of Science, 日本学術振興会 特別研究員DC2

■Research activity information

Award

  • Jul. 2020, 第三回ハイドロジェノミクス奨励賞, 新規Znジチオレン錯体結晶における 水素結合を介した電子移動がもたらすベイポクロミズム

Paper

  • Fate of Pomeranchuk effect in ultrahigh magnetic fields
    Naofumi Matsuyama; So Yokomori; Toshihiro Nomura; Yuto Ishii; Hiroaki Hayashi; Hajime Ishikawa; Kazuki Matsui; Hatsumi Mori; Koichi Kindo; Yasuhiro H. Matsuda; Shusaku Imajo
    Nature Communications, 12 Jan. 2026, [Reviewed]
  • Synthesis and Physical Properties of Salphen-Conjugated TTF-Metal Complex [CuII(TTF-Salphen)]2PF6
    Daiki Tauchi; Aoba Kanesaka; So Yokomori; Takuya Shiga; Tomoyuki Akutagawa; Nobuki Kuwabara; Masashi Hasegawa; Hiroyuki Nishikawa, Abstract

    A paramagnetic metal complex, [CuII(TTF‐Salphen)], in which a TTF (tetrathiafulvalene) ligand is coordinated through a Salphen coordination site, was synthesized as a potential candidate for a new π‐d system. Electrochemical oxidation afforded its cation radical salt, [CuII(TTF‐Salphen)]2PF6, as black, block‐shaped crystals. X‐ray crystallographic analysis revealed that both the neutral and cationic complexes possess planar structures and stack in a head‐to‐tail manner to form dimers. The 2:1 stoichiometry of the TTF‐complex to the anion in [CuII(TTF‐Salphen)]2PF6 indicates a partial oxidation state of +0.5 for the TTF moiety. Electrical conductivity measurements of [CuII(TTF‐Salphen)]2PF6 revealed semiconducting behavior, reflecting its one‐dimensional columnar structure, yielded a room‐temperature conductivity of σRT = 1.8 S·cm−1 and an activation energy of Ea = 0.14 eV. [CuII(TTF‐Salphen)]2PF6 exhibits weak antiferromagnetic interactions between the π‐spins of the TTF moieties and the d‐spins of Cu(II) centers upon cooling, followed by the formation of singlet states by the π‐spins in the TTF moieties below 20 K. Electron spin resonance (ESR) measurements on the powder sample of [CuII(TTF‐Salphen)]2PF6 support the magnetic behavior observed in the magnetic susceptibility measurements., Wiley
    Asian Journal of Organic Chemistry, 29 Jul. 2025, [Reviewed]
  • Macroscopic Structural Transition of Nickel Dithiolate Capsule with Uniaxial Magnetic Anisotropy in Water
    Tomoko Fujino; Mafumi Hishida; Masatoshi Ito; Toshikazu Nakamura; Mizue Asada; Naoya Kurahashi; Hisao Kiuchi; Yoshihisa Harada; Koji Harano; Rie Makiura; Kanokwan Jumtee Takeno; So Yokomori; Hiroshi Oike; Hatsumi Mori, Abstract

    Meeting the Internet of Things (IoT) demand for flexible organic spintronics requires dynamically flexible, “soft” organic magnetic materials. These materials should be capable of reordering their macroscopic assemblies in response to external stimuli. Unlike conventional rigid, “hard” crystalline organic paramagnets, that are typically composed of open‐shell π‐ or d/π‐conjugated planar molecules and rely on intermolecular interactions in the ordered, assembled structures, soft paramagnets necessitate a delicate balance between long‐range structural order (essential for controlling magnetic properties) and dynamic flexibility a challenge previously unmet for open‐shell planar molecules. In this study, an amphiphilic d/π‐conjugated nickel dithiolate radical anion salt is presented that self‐assembles into ordered membranes, forming capsule‐like macrostructures with exceptional stability in aqueous environments. This design achieves the desired balance. These assemblies exhibit uniaxial magnetic anisotropy driven by significant spin–spin interactions and undergo temperature‐dependent macroscopic structural transitions representing, to the knowledge, the first observation of such behavior for assemblies of open‐shell planar molecules. This well‐defined, single‐molecular‐weight system provides critical structural and mechanism insights for soft matter design and a versatile platform for spintronic applications. The findings advance the development of flexible, tunable molecular soft paramagnets, expanding their potential for innovative applications in flexible devices and beyond., Wiley
    Advanced Science, 23 Apr. 2025, [Reviewed]
  • Triplet-Mediator Ligand-Protected Metal Nanocluster Sensitizers for Photon Upconversion
    Daichi Arima; Shion Hidaka; So Yokomori; Yoshiki Niihori; Yuichi Negishi; Ryuichi Oyaizu; Takumi Yoshinami; Kenji Kobayashi; Masaaki Mitsui, American Chemical Society (ACS)
    Journal of the American Chemical Society, 13 May 2024, [Reviewed]
  • Neutral Radical Molecular Conductors Based on a Gold Dimethoxybenzenedithiolene Complex with and without Crystal Solvent
    So Yokomori; Shun Dekura; Akira Ueda; Toshiki Higashino; Hatsumi Mori, Lead, The Chemical Society of Japan
    Chemistry Letters, 05 Jan. 2023, [Reviewed]
  • Ambipolar Nickel Dithiolene Complex Semiconductors: From One- to Two-Dimensional Electronic Structures Based upon Alkoxy Chain Lengths
    Masatoshi Ito; Tomoko Fujino; Lei Zhang; So Yokomori; Toshiki Higashino; Rie Makiura; Kanokwan Jumtee Takeno; Taisuke Ozaki; Hatsumi, American Chemical Society ({ACS})
    Journal of the American Chemical Society, 13 Dec. 2022, [Reviewed]
  • Proton–electron-coupled functionalities of conductivity, magnetism, and optical properties in molecular crystals
    Hatsumi Mori; So Yokomori; Shun Dekura; Akira Ueda, This article highlights the recent progress of proton–electron-coupled functionalities based on π- and d/π-electron molecular materials, which will stimulate inspiration for pioneering novel phenomena/functionalities., Royal Society of Chemistry (RSC)
    Chemical Communications, 2022, [Reviewed], [Invited]
  • Modulation of the electronic states and magnetic properties of nickel catecholdithiolene complex by oxidation-coupled deprotonation
    So Yokomori; Shun Dekura; Akira Ueda; Reiji Kumai; Youichi Murakami; Hatsumi Mori, Lead, Magnetic properties of nickel catecholdithiolene complexes with unique hydrogen-bond networks were modulated by oxidation-coupled deprotonations and controlled with crystallization conditions., Royal Society of Chemistry ({RSC})
    Journal of Materials Chemistry C, May 2021, [Reviewed]
  • Effect of Alkyl Chain Length on Charge Transport Property of Anthracene-Based Organic Semiconductors
    Dongwei Zhang; So Yokomori; Ryohei Kameyama; Changbin Zhao; Akira Ueda; Lei Zhang; Reiji Kumai; Youichi Murakami; Hong Meng; Hatsumi Mori, American Chemical Society ({ACS})
    ACS Applied Materials & Interfaces, 17 Dec. 2020, [Reviewed]
  • Vapochromism induced by intermolecular electron transfer coupled with hydrogen-bond formation in zinc dithiolene complex
    So Yokomori; Shun Dekura; Tomoko Fujino; Mitsuaki Kawamura; Taisuke Ozaki; Hatsumi Mori, Lead
    Journal of Materials Chemistry C, Oct. 2020, [Reviewed]
  • Construction of three-dimensional anionic molecular frameworks based on hydrogen-bonded metal dithiolene complexes and the crystal solvent effect
    So Yokomori; Akira Ueda; Toshiki Higashino; Reiji Kumai; Youichi Murakami; Hatsumi Mori, Lead,

    Three-dimensional hydrogen-bonded anionic molecular frameworks based on a metal dithiolene complex were constructed with a significant solvent effect.

    , Royal Society of Chemistry ({RSC})
    CrystEngComm, Apr. 2019, [Reviewed]

MISC

Courses

  • Substance and Life　　　　　　　　　　　　　　　
    Apr. 2026 - Present
    Ibaraki University
  • Reading of Scientific Papers Ⅰ, II　　　　　　　　　　　　　　　
    Apr. 2026 - Present
    Ibaraki University
  • Advanced Exercises in Chemistry Ⅰ, II　　　　　　　　　　　　　　　
    Apr. 2026 - Present
    Ibaraki University
  • Basic Exercises in Chemistry Ⅰ　　　　　　　　　　　　　　　
    Apr. 2026 - Present
    Ibaraki University
  • Chemistry Introductory Seminar　　　　　　　　　　　　　　　
    Oct. 2025 - Present
    Ibaraki University
  • Advanced Chemistry Seminar I, II　　　　　　　　　　　　　　　
    Oct. 2025 - Present
    Ibaraki University
  • Laboratory Exercises in Physical Chemistry　　　　　　　　　　　　　　　
    Oct. 2025 - Present
    Ibaraki University
  • Advanced Organic Electronics (Graduate Course)　　　　　　　　　　　　　　　
    Oct. 2025 - Present
    Ibaraki University
  • Laboratory Exercises in Basic Chemistry II　　　　　　　　　　　　　　　
    Apr. 2025 - Present
    Ibaraki University
  • Apr. 2025 - Present
  • Molecular Solid-State Chemistry (Graduate Course)　　　　　　　　　　　　　　　
    Apr. 2025 - Present
    Ibaraki University
  • University Introductory Seminar　　　　　　　　　　　　　　　
    Apr. 2026 - Aug. 2026
    Ibaraki University
  • Basic Experiments in Chemistry　　　　　　　　　　　　　　　
    Apr. 2023 - Mar. 2025
    Rikkyo University
  • Standard Experiments in Chemistry C　　　　　　　　　　　　　　　
    Oct. 2022 - Mar. 2025
    Rikkyo University
  • Standard Experiments in Chemistry A　　　　　　　　　　　　　　　
    Oct. 2022 - Mar. 2025
    Rikkyo University
  • Standard Experiments in Chemistry B　　　　　　　　　　　　　　　
    May 2022 - Mar. 2025
    Rikkyo University
  • Inorganic Chemistry 1　　　　　　　　　　　　　　　
    Nov. 2022 - Jan. 2023
    Rikkyo University
  • Research Eeperiments　　　　　　　　　　　　　　　
    Rikkyo University

Affiliated academic society

  • 分子科学会
  • 錯体化学会
  • 日本物理学会
  • 日本化学会

Research Themes

Media Coverage

  • 東大と大阪公立大、大気下でもホールと電子の双方を流す新しい分子性半導体材料の開発に成功　　　　　　　　　　　
    日本経済新聞, Dec. 2022, Paper

Academic Contribution Activities

  • 錯体化学若手の会 世話人　　　　　　　　　　　　　　　
    Planning etc
    錯体化学若手の会, Jun. 2026 - Present