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Press Releases

DATE2025.01.28 #Press Releases

Light-Harvesting Electron Spin Hyperpolarization Using Dye-Assembled Materials

-Proposed design guidelines for hyperpolarized electron spin materials for quantum applications-

Summary

A research group led by Graduate Student Tomoyuki Hamachi, Graduate Student Miku Inoue, and Professor Nobuhiro Yanai at School of Science, The University of Tokyo, in collaboration with Associate Professor Kiyoshi Miyata and Professor Ken Onda at Graduate School of Science, Kyushu University, Research Associate Masaaki Fuki and Professor Yasuhiro Kobori at Research Center for Molecular Photo Science, Kobe University, Specially Appointed Assistant Professor Takuma Ito at Graduate School of Science, Kyoto University, and Associate Professor Yuki Kurashige at Graduate School of Science, Kyoto University, has revealed that a metal-organic framework (MOF) that functions as a light-harvesting antenna  can effectively hyperpolarize electron spins. 

Light-induced spin hyperpolarization, in which the spin polarization rate of electron spins is enhanced by photoexcitation, is important for quantum technologies such as quantum sensing and dynamic nuclear polarization (DNP). In this study, the concept of “light-harvesting hyperpolarization,” which effectively hyperpolarizes electron spins by using exciton diffusion in a MOF composed of dyes, was demonstrated for the first time. This achievement is expected to lead to applications of hyperpolarized electron spin materials in quantum technologies such as complex quantum computation, quantum sensing of analytes, and DNP.


Figure:Light-Harvesting Spin Polarization using MOF

Related links:Kyushu University, Kobe University, Kyoto University, JST

Journals

Journal name
Journal of the American Chemical Society
Title of paper