Electrically Detectable Photoinduced Polarization Switching in a Molecular Prussian Blue Analogue

Yu Bo Huang, Jun Qiu Li, Wen Huang Xu, Wenwei Zheng, Xiaopeng Zhang, Kai Ge Gao, Tianchi Ji, Taisuke Ikeda, Takumi Nakanishi, Shinji Kanegawa, Shu Qi Wu, Sheng Qun Su, Osamu Sato

研究成果: ジャーナルへの寄稿学術誌査読

3 被引用数 (Scopus)


Light, a nondestructive and remotely controllable external stimulus, effectively triggers a variety of electron-transfer phenomena in metal complexes. One prime example includes using light in molecular cyanide-bridged [FeCo] bimetallic Prussian blue analogues, where it switches the system between the electron-transferred metastable state and the system’s ground state. If this process is coupled to a ferroelectric-type phase transition, the generation and disappearance of macroscopic polarization, entirely under light control, become possible. In this research, we successfully executed a nonpolar-to-polar phase transition in a trinuclear cyanide-bridged [Fe2Co] complex crystal via directional electron transfer. Intriguingly, by exposing the crystal to the wavelength of light─785 nm─without any electric field─we can drive this ferroelectric phase transition to completely depolarize the crystal, during which a measurable electric current response can be detected. These discoveries signify an important step toward the realization of fully light-controlled ferroelectric memory devices.

ジャーナルJournal of the American Chemical Society
出版ステータス出版済み - 1月 10 2024

!!!All Science Journal Classification (ASJC) codes

  • 触媒
  • 化学一般
  • 生化学
  • コロイド化学および表面化学


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