Singlet fission as a polarized spin generator for dynamic nuclear polarization
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- Kawashima, Yusuke
- Department of Applied Chemistry, Graduate School of Engineering
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- Hamachi, Tomoyuki
- Department of Applied Chemistry, Graduate School of Engineering
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- Yamauchi, Akio
- Department of Applied Chemistry, Graduate School of Engineering
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- Nishimura, Koki
- Department of Applied Chemistry, Graduate School of Engineering
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- Nakashima, Yuma
- Department of Applied Chemistry, Graduate School of Engineering
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- Fujiwara, Saiya
- Department of Applied Chemistry, Graduate School of Engineering
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- Kimizuka, Nobuo
- Department of Applied Chemistry, Graduate School of Engineering Center for Molecular Systems (CMS)
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- Ryu, Tomohiro
- Department of Chemistry, Graduate School of Science, Kyushu University
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- Tamura, Tetsu
- Department of Chemistry, Graduate School of Science, Kyushu University
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- Saigo, Masaki
- Department of Chemistry, Graduate School of Science, Kyushu University
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- Onda, Ken
- Department of Chemistry, Graduate School of Science, Kyushu University
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- Sato, Shunsuke
- Department of Physics, School of Science, Kitasato University
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- Kobori, Yasuhiro
- Molecular Photoscience Research Center Department of Chemistry, Graduate School of Science, Kobe University
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- Tateishi, Kenichiro
- Cluster for Pioneering Research, RIKEN RIKEN Nishina Center for Accelerator-Based Science
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- Uesaka, Tomohiro
- Cluster for Pioneering Research, RIKEN RIKEN Nishina Center for Accelerator-Based Science
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- Watanabe, Go
- Department of Physics, School of Science, Kitasato University Kanagawa Institute of Industrial Science and Technology (KISTEC)
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- Miyata, Kiyoshi
- Department of Chemistry, Graduate School of Science, Kyushu University
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- Yanai, Nobuhiro
- Department of Applied Chemistry, Graduate School of Engineering Center for Molecular Systems (CMS) PRESTO, JST FOREST, JST
Description
Singlet fission (SF), converting a singlet excited state into a spin-correlated triplet-pair state, is an effective way to generate a spin quintet state in organic materials. Although its application to photovoltaics as an exciton multiplier has been extensively studied, the use of its unique spin degree of freedom has been largely unexplored. Here, we demonstrate that the spin polarization of the quintet multiexcitons generated by SF improves the sensitivity of magnetic resonance of water molecules through dynamic nuclear polarization (DNP). We form supramolecular assemblies of a few pentacene chromophores and use SF-born quintet spins to achieve DNP of water-glycerol, the most basic biological matrix, as evidenced by the dependence of nuclear polarization enhancement on magnetic field and microwave power. Our demonstration opens a use of SF as a polarized spin generator in bio-quantum technology.
Journal
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- Nature Communications
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Nature Communications 14 1056-, 2023-03-01
Springer
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Keywords
Details 詳細情報について
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- CRID
- 1050864557040843520
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- ISSN
- 20411723
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- HANDLE
- 2324/7234644
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- PubMed
- 36859419
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- Text Lang
- en
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- Article Type
- journal article
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- Data Source
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- IRDB
- Crossref
- KAKEN
- OpenAIRE
