Development of polarization switching material using electron transfer

• Project/Area Number: 20H00385
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Review Section: Medium-sized Section 34:Inorganic/coordination chemistry, analytical chemistry, and related fields
• Research Institution: Kyushu University
• Principal Investigator: Sato Osamu 九州大学, 先導物質化学研究所, 教授 (80270693)
• Project Period (FY): 2020-04-01 – 2024-03-31
• Project Status: Completed (Fiscal Year 2023)
• Budget Amount: ¥44,980,000 (Direct Cost: ¥34,600,000、Indirect Cost: ¥10,380,000); Fiscal Year 2023: ¥7,020,000 (Direct Cost: ¥5,400,000、Indirect Cost: ¥1,620,000); Fiscal Year 2022: ¥12,220,000 (Direct Cost: ¥9,400,000、Indirect Cost: ¥2,820,000); Fiscal Year 2021: ¥12,220,000 (Direct Cost: ¥9,400,000、Indirect Cost: ¥2,820,000); Fiscal Year 2020: ¥13,520,000 (Direct Cost: ¥10,400,000、Indirect Cost: ¥3,120,000)
• Keywords: 電子移動 / 分極

Outline of Research at the Start

メモリー、センサー、エネルギー変換素子をはじめ様々なデバイスに分極機能が利用されている。しかし、現在実用化されている分極制御物質の分極変化のメカニズムはイオン変位や分子配向変化であり、電子の持つ特性・自由度が十分には生かされていない。本研究では、分極変化の源が電子移動である新しいタイプの分極制御物質を開発することを目指す。

Outline of Final Research Achievements

Polarization-switching materials have a wide range of applications including memory and sensors. We developed new polarization-switching cobalt valence tautomeric complexes. The cobalt complexes crystalize in a polar structure and exhibit intramolecular electron transfer at approximately 190 K. They also exhibit photoinduced electron transfer and that the photoinduced metastable state is trapped at low temperatures. These results suggest that the cobalt complexes exhibit thermal- and photo-induced polarization switching, the mechanism of which is electron transfer between Co and ligand.

Academic Significance and Societal Importance of the Research Achievements

温度、及び光誘起電子移動を利用して電気分極を制御できる新しい物質を開発した。将来のメモリー、センサ ー、エネルギー変換素子への応用が期待される。これまでの分極制御物質開発は強誘電体開発を中心に研究が行われてきた。本研究では、電子移動機構を積極的に導入することで非強誘電体において強誘電体と同レベルの分極変化を実現できることを明らかにした。本手法を用いることで今後高性能の新しい機能性分極制御物質を開発できる可能性がある。

Research Products

• [Journal Article] Photo-induced valence tautomerism and polarization switching in mononuclear cobalt complexes with an enantiopure chiral ligand (2024)
  • Author(s): Xu Wen-Huang、Huang Yu-Bo、Zheng Wen-Wei、Su Sheng-Qun、Kanegawa Shinji、Wu Shu-Qi、Sato Osamu
  • Journal Title: Dalton Transactions Volume: 53 Issue: 6 Pages: 2512-2516
  • DOI: 10.1039/d3dt03915c
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Electrically Detectable Photoinduced Polarization Switching in a Molecular Prussian Blue Analogue (2023)
  • Author(s): Huang Yu-Bo、Li Jun-Qiu、Xu Wen-Huang、Zheng Wenwei、Zhang Xiaopeng、Gao Kai-Ge、Ji Tianchi、Ikeda Taisuke、Nakanishi Takumi、Kanegawa Shinji、Wu Shu-Qi、Su Sheng-Qun、Sato Osamu
  • Journal Title: Journal of the American Chemical Society Volume: 146 Issue: 1 Pages: 201-209
  • DOI: 10.1021/jacs.3c07545
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Control of electronic polarization <i>via</i> charge ordering and electron transfer: electronic ferroelectrics and electronic pyroelectrics (2023)
  • Author(s): Su Sheng-Qun、Wu Shu-Qi、Kanegawa Shinji、Yamamoto Kaoru、Sato Osamu
  • Journal Title: Chemical Science Volume: 14 Issue: 39 Pages: 10631-10643
  • DOI: 10.1039/d3sc03432a
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Magnetoelectricity Enhanced by Electron Redistribution in a Spin Crossover [FeCo] Complex (2023)
  • Author(s): Zhang Xiaopeng、Xu Wen-Huang、Zheng Wenwei、Su Sheng-Qun、Huang Yu-Bo、Shui Qirui、Ji Tianchi、Uematsu Mikoto、Chen Qian、Tokunaga Masashi、Gao Kaige、Okazawa Atsushi、Kanegawa Shinji、Wu Shu-Qi、Sato Osamu
  • Journal Title: Journal of the American Chemical Society Volume: 145 Issue: 29 Pages: 15647-15651
  • DOI: 10.1021/jacs.3c02977
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Energy conversion and storage via photoinduced polarization change in non-ferroelectric molecular [CoGa] crystals (2023)
  • Author(s): Sadhukhan Pritam、Wu Shu-Qi、Kanegawa Shinji、Su Sheng-Qun、Zhang Xiaopeng、Nakanishi Takumi、Long Jeremy Ian、Gao Kaige、Shimada Rintaro、Okajima Hajime、Sakamoto Akira、Chiappella Joy G.、Huzan Myron S.、Kroll Thomas、Sokaras Dimosthenis、Baker Michael L.、Sato Osamu
  • Journal Title: Nature Communications Volume: 14 Issue: 1 Pages: 3394-3394
  • DOI: 10.1038/s41467-023-39127-8
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Photoinduced Persistent Polarization Change in a Spin Transition Crystal (2022)
  • Author(s): Su Sheng‐Qun、Wu Shu‐Qi、Huang Yu‐Bo、Xu Wen‐Huang、Gao Kai‐Ge、Okazawa Atsushi、Okajima Hajime、Sakamoto Akira、Kanegawa Shinji、Sato Osamu
  • Journal Title: Angewandte Chemie International Edition Volume: 61 Issue: 39
  • DOI: 10.1002/anie.202208771
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Macroscopic Polarization Change of Mononuclear Valence Tautomeric Cobalt Complexes Through the Use of Enantiopure Ligand (2022)
  • Author(s): Cheng Feng、Wu Shuqi、Zheng Wenwei、Su Shengqun、Nakanishi Takumi、Xu Wenhuang、Sadhukhan Pritam、Sejima Hibiki、Ikenaga Shimon、Yamamoto Kaoru、Gao Kaige、Kanegawa Shinji、Sato Osamu
  • Journal Title: Chemistry ? A European Journal Volume: 28 Issue: 59
  • DOI: 10.1002/chem.202202161
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Manipulating electron redistribution to achieve electronic pyroelectricity in molecular [FeCo] crystals (2021)
  • Author(s): Pritam Sadhukhan, Shu-Qi Wu, Jeremy Ian Long, Takumi Nakanishi, Shinji Kanegawa, Kaige Gao, Kaoru Yamamoto, Hajime Okajima, Akira Sakamoto, Michael L. Baker, Thomas Kroll, Dimosthenis Sokaras, Atsushi Okazawa, Norimichi Kojima, Yoshihito Shiota, Kazunari Yoshizawa, and Osamu Sato
  • Journal Title: Nature Communications Volume: 12 Issue: 1 Pages: 4836-4836
  • DOI: 10.1038/s41467-021-25041-4
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Water-oriented magnetic anisotropy transition (2021)
  • Author(s): SQ. Su, SQ. Wu, M. Hagihala, P. Miao, Z. Tan, S. Torii, T. Kamiyama, T. Xiao, Z. Wang, Z. Ouyang, Y. Miyazaki, M. Nakano, T. Nakanishi, JQ. Li, S. Kanegawa, O. Sato
  • Journal Title: Nature Communications Volume: 12 Issue: 1 Pages: 2738-2738
  • DOI: 10.1038/s41467-021-23057-4
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Controlling dynamic magnetic properties of coordination clusters via switchable electronic configuration (2021)
  • Author(s): W. Huang, X. Ma, O. Sato, DY Wu
  • Journal Title: Chem. Soc. Rev. Volume: 50 Issue: 12 Pages: 6832-6870
  • DOI: 10.1039/d1cs00101a
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Macroscopic Polarization Change via Electron Transfer in a Valence Tautomeric Cobalt Complex (2020)
  • Author(s): Wu Shu-Qi、Liu Meijiao、Gao Kaige、Kanegawa Shinji、Horie Yusuke、Aoyama Genki、Okajima Hajime、Sakamoto Akira、Baker Michael L.、Huzan Myron S.、Bencok Peter、Abe Tsukasa、Shiota Yoshihito、Yoshizawa Kazunari、Xu Wenhuang、Kou Hui-Zhong、Sato Osamu
  • Journal Title: Nature Communications Volume: 11 Issue: 1 Pages: 1992-1992
  • DOI: 10.1038/s41467-020-15988-1
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Femtosecond Polarization Switching in the Crystal of a [CrCo] Dinuclear Complex (2020)
  • Author(s): Kuramochi Hikaru、Aoyama Genki、Okajima Hajime、Sakamoto Akira、Kanegawa Shinji、Sato Osamu、Takeuchi Satoshi、Tahara Tahei
  • Journal Title: Angewandte Chemie International Edition Volume: 59 Issue: 37 Pages: 15865-15869
  • DOI: 10.1002/anie.202004583
  • Peer Reviewed / Int'l Joint Research
• [Presentation] Control of Magnetic and Electric Polarization via Electron Transfer in Molecular Crystals (2024)
  • Author(s): Osamu Sato
  • Organizer: The 13th Japan-China Joint Symposium on Metal Cluster Compounds
  • Int'l Joint Research / Invited
• [Presentation] Control of Magnetic and Electric Polarization in Molecular Crystals through External Stimuli (2024)
  • Author(s): Osamu Sato
  • Organizer: The 9th Asian Conference on Coordination Chemistry (ACCC9)
  • Int'l Joint Research / Invited
• [Presentation] Control of Magnetic and Electric Polarization via Electron Transfer in Molecular Crystals (2023)
  • Author(s): Osamu Sato
  • Organizer: The International Conference on Spin Transition as Post PDSTM
  • Int'l Joint Research / Invited
• [Presentation] Control of Magnetic and Electric Polarization via Electron Transfer in Molecular Crystals (2023)
  • Author(s): Osamu Sato
  • Organizer: The 18th International Conference on Molecule-based Magnets
  • Int'l Joint Research / Invited
• [Presentation] Control of Magnetic and Electric Polarization via Electron Transfer in Molecular Crystals (2023)
  • Author(s): Osamu Sato
  • Organizer: The 8th International Conference on Superconductivity and Magnetism
  • Int'l Joint Research / Invited
• [Presentation] Control of Magnetic and Electric Polarization in Molecular Crystals through External Stimuli (2022)
  • Author(s): Osamu Sato
  • Organizer: Modern Trends in Molecular Magnetism (MTMM 3)
  • Int'l Joint Research / Invited
• [Presentation] Control of Magnetic and Electric Polarization in Molecular Crystals through External Stimuli (2022)
  • Author(s): Osamu Sato
  • Organizer: 2nd Asian Conference on Molecular Magnetism (ACMM2)
  • Int'l Joint Research / Invited
• [Presentation] Control of Magnetic and Electric Polarization via Electron Transfer in Molecular Crystals (2022)
  • Author(s): Osamu Sato
  • Organizer: The 73rd Yamada Conference
  • Int'l Joint Research / Invited
• [Presentation] 電子移動による準安定状態を利用した分子結晶の分極制御 (2022)
  • Author(s): 佐藤治
  • Organizer: 日本物理学会
  • Int'l Joint Research / Invited
• [Presentation] 分子内電子移動を利用した金属錯体結晶の分極制御 (2022)
  • Author(s): 佐藤治
  • Organizer: 分子性固体オンラインセミナー
  • Int'l Joint Research / Invited
• [Presentation] Polarization and Magnetization Switching via Charge Transfer in Molecular Crystals (2021)
  • Author(s): O. Sato
  • Organizer: Pacifichem
  • Int'l Joint Research / Invited
• [Presentation] Proton Transfer Coupled Spin Transition and Trapping of Photoinduced Metastable Proton Transfer State in an Fe(II) Complex (2021)
  • Author(s): O. Sato
  • Organizer: Pacifichem
  • Int'l Joint Research / Invited
• [Presentation] Magnetization and Polarization Switching via Electron Transfer in a Valence Tautomeric Cobalt Complex (2021)
  • Author(s): O. Sato
  • Organizer: The 14th Japanese-Russian Workshop on Open Shell Compounds and Molecular Spin Devices
  • Int'l Joint Research / Invited
• [Presentation] Polarization and Magnetization Switching via Charge Transfer in Molecular Crystals (2021)
  • Author(s): O. Sato
  • Organizer: The 17th International Conference on Molecule-based Magnets
  • Int'l Joint Research / Invited
• [Presentation] Macroscopic Polarization Change via Electron Transfer in a Valence Tautomeric Cobalt Comple (2021)
  • Author(s): Shuqi Wu, Osamu Sato
  • Organizer: The 1st Asian Conference on Molecular Magnetism
  • Int'l Joint Research