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2023 Fiscal Year Annual Research Report

Development of Multifunctional Photo-responsive Molecular Magnets

Research Project

Project/Area Number 21K14582
Research InstitutionThe University of Tokyo

Principal Investigator

ステファンチック オラフ  東京大学, 大学院理学系研究科(理学部), 助教 (00822503)

Project Period (FY) 2021-04-01 – 2024-03-31
KeywordsFunctional compounds / Low-frequency absorption / Luminescence / Molecular magnets / Nonlinear optics / Photomagnets / Switchable materials
Outline of Annual Research Achievements

In the final year of our project, we achieved significant milestones. We published five articles and conducted research on approximately 40 new transition metal complexes with various ligands. Moreover, we presented our findings at three conferences.
Among our noteworthy discoveries, we found intriguing spin crossover Fe(II)-Hg(II) networks whose spectroscopic properties change with temperature variations (published in Chem. Mater., 2023, 35, 9613). Currently, we are focusing on similar materials exhibiting responsiveness to light. Additionally, we identified analogous systems capable of mechanical exfoliation into nanosheets (published in J. Phys. Chem. Lett., 2023, 14, 10420). Furthermore, our exploration of Co(II)-octacyanidometallate complexes revealed their spin-modulating behavior in response to varying water content, suggesting potential applications in memory and sensing devices (published in Eur. J. Inorg., 2023, 26, e202300307).
Furthermore, our investigations into cocrystals (published in Inorg. Chem. 2024, 63, 1803) and Ln(III)-Cu(I) systems (published in J. Phys. Chem. C 2023, 127, 15500) unveiled their luminescent characteristics and nonlinear optical properties, particularly in second harmonic generation.

  • Research Products

    (8 results)

All 2024 2023

All Journal Article (5 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 5 results,  Open Access: 2 results) Presentation (3 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Nonlinear and Emissive {[MIII(CN)6]3-・・・Polyresorcinol} (M = Fe, Co, Cr) Cocrystals Exhibiting an Ultralow Frequency Raman Response2024

    • Author(s)
      Jedrzejowska Katarzyna、Kobylarczyk Jedrzej、Tabor Dominika、Srebro-Hooper Monika、Kumar Kunal、Li Guanping、Stefanczyk Olaf、Muziol Tadeusz M.、Dziedzic-Kocurek Katarzyna、Ohkoshi Shin-ichi、Podgajny Robert
    • Journal Title

      Inorganic Chemistry

      Volume: 63 Pages: 1803~1815

    • DOI

      10.1021/acs.inorgchem.3c03153

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Mechanical Exfoliation of Multilayer Pseudohalogen-Bridged Nanosheets2023

    • Author(s)
      Li Guanping、Stefanczyk Olaf、Jia Fangda、Nagashima Shuntaro、Kumar Kunal、Imoto Kenta、Tokoro Hiroko、Ohkoshi Shin-ichi
    • Journal Title

      The Journal of Physical Chemistry Letters

      Volume: 14 Pages: 10420~10426

    • DOI

      10.1021/acs.jpclett.3c02257

    • Peer Reviewed
  • [Journal Article] Thermometric Properties of Thio/Selenocyanato-Bridged Spin-Crossover Networks2023

    • Author(s)
      Li Guanping、Stefanczyk Olaf、Kumar Kunal、Imoto Kenta、Nakabayashi Koji、Ohkoshi Shin-ichi
    • Journal Title

      Chemistry of Materials

      Volume: 35 Pages: 9613~9622

    • DOI

      10.1021/acs.chemmater.3c01756

    • Peer Reviewed
  • [Journal Article] Tuning of Ratiometric Optical Thermometry in the Family of Magnetic {Nd1-xIIIYbIIIx[Cu2I(CN)5]} Frameworks Showing the Large SHG Response2023

    • Author(s)
      Xin Yue、Kumar Kunal、Zakrzewski Jakub J.、Chorazy Szymon、Nakabayashi Koji、Stefanczyk Olaf、Ohkoshi Shin-ichi
    • Journal Title

      The Journal of Physical Chemistry C

      Volume: 127 Pages: 15500~15511

    • DOI

      10.1021/acs.jpcc.3c02105

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Water‐Solvation‐Dependent Spin Transitions in Cobalt(II)‐Octacyanidometallate Complexes2023

    • Author(s)
      Song Qinyu、Stefanczyk Olaf、Li Guanping、Kumar Kunal、Nakamura Kazuki、Nakabayashi Koji、Ohkoshi Shin‐ichi
    • Journal Title

      European Journal of Inorganic Chemistry

      Volume: 26 Pages: e202300307

    • DOI

      10.1002/ejic.202300307

    • Peer Reviewed / Open Access
  • [Presentation] New Functionalities in Pseudohalide-Based Complexes2024

    • Author(s)
      O. Stefanczyk
    • Organizer
      The 104th CSJ Annual Meeting
  • [Presentation] Spectroscopic and magnetic studies of photoinduced states in Cu(II)-Mo(IV) system with helical chain motifs2023

    • Author(s)
      O. Stefanczyk
    • Organizer
      Phase Transition and Dynamical Properties of Spin Transition Materials 2023 (PDSTM2023)
    • Int'l Joint Research
  • [Presentation] Water-solvation-dependent Spin Transitions in CoII-[MIV/V(CN)8]4-/3- salts2023

    • Author(s)
      O. Stefanczyk
    • Organizer
      The 73rd Conference of Japan Society of Coordination Chemistry

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Published: 2024-12-25  

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