Articles | Volume 2, issue 1
https://doi.org/10.5194/mr-2-33-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/mr-2-33-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
17 Feb 2021
Research article |
| 17 Feb 2021
| 17 Feb 2021
Room-temperature hyperpolarization of polycrystalline samples with optically polarized triplet electrons: pentacene or nitrogen-vacancy center in diamond?
Koichiro Miyanishi
CORRESPONDING AUTHOR
Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-Ku, Kyoto 615-8510, Japan
Laboratory for Solid State Physics, ETH Zurich, 8093 Zurich, Switzerland
Kazuyuki Takeda
Division of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
Izuru Ohki
Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan
Shinobu Onoda
Institute for Quantum Life Science, National Institutes for Quantum and Radiological Science and Technology, 4-9-1, Anagawa, Inage-Ku, Chiba 263-8555, Japan
Takasaki Advanced Radiation Research Institute, National Institutes for Quantum and Radiological Science and Technology, 1233 Watanuki, Takasaki, Gunma 370-1292, Japan
Takeshi Ohshima
Institute for Quantum Life Science, National Institutes for Quantum and Radiological Science and Technology, 4-9-1, Anagawa, Inage-Ku, Chiba 263-8555, Japan
Takasaki Advanced Radiation Research Institute, National Institutes for Quantum and Radiological Science and Technology, 1233 Watanuki, Takasaki, Gunma 370-1292, Japan
Hiroshi Abe
Institute for Quantum Life Science, National Institutes for Quantum and Radiological Science and Technology, 4-9-1, Anagawa, Inage-Ku, Chiba 263-8555, Japan
Takasaki Advanced Radiation Research Institute, National Institutes for Quantum and Radiological Science and Technology, 1233 Watanuki, Takasaki, Gunma 370-1292, Japan
Hideaki Takashima
Department of Electronic Science and Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
Shigeki Takeuchi
Department of Electronic Science and Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
Alexander I. Shames
Department of Physics, Ben-Gurion University of the Negev, 8410501 Beer-Sheva, Israel
Kohki Morita
Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan
Yu Wang
Division of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
Frederick T.-K. So
Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-Ku, Kyoto 615-8510, Japan
Institute for Quantum Life Science, National Institutes for Quantum and Radiological Science and Technology, 4-9-1, Anagawa, Inage-Ku, Chiba 263-8555, Japan
Daiki Terada
Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-Ku, Kyoto 615-8510, Japan
Institute for Quantum Life Science, National Institutes for Quantum and Radiological Science and Technology, 4-9-1, Anagawa, Inage-Ku, Chiba 263-8555, Japan
Ryuji Igarashi
Institute for Quantum Life Science, National Institutes for Quantum and Radiological Science and Technology, 4-9-1, Anagawa, Inage-Ku, Chiba 263-8555, Japan
Takasaki Advanced Radiation Research Institute, National Institutes for Quantum and Radiological Science and Technology, 1233 Watanuki, Takasaki, Gunma 370-1292, Japan
JST, PRESTO, Kawaguchi, Japan
Akinori Kagawa
Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
JST, PRESTO, Kawaguchi, Japan
Center for Quantum Information and Quantum Biology, Institute for Open and Transdisciplinary Research Initiatives, Osaka University, 1-2 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
Masahiro Kitagawa
Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
Center for Quantum Information and Quantum Biology, Institute for Open and Transdisciplinary Research Initiatives, Osaka University, 1-2 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
Norikazu Mizuochi
Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan
Masahiro Shirakawa
Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-Ku, Kyoto 615-8510, Japan
Institute for Quantum Life Science, National Institutes for Quantum and Radiological Science and Technology, 4-9-1, Anagawa, Inage-Ku, Chiba 263-8555, Japan
Makoto Negoro
CORRESPONDING AUTHOR
Institute for Quantum Life Science, National Institutes for Quantum and Radiological Science and Technology, 4-9-1, Anagawa, Inage-Ku, Chiba 263-8555, Japan
JST, PRESTO, Kawaguchi, Japan
Center for Quantum Information and Quantum Biology, Institute for Open and Transdisciplinary Research Initiatives, Osaka University, 1-2 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
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Cited
13 citations as recorded by crossref.
- Robust external spin-hyperpolarization of quadrupolar nuclei enabled by strain L. Chen et al. https://doi.org/10.1103/PhysRevB.109.L180102
- Macroscopic hyperpolarization enhanced with quantum optimal control A. Marshall et al. https://doi.org/10.1103/PhysRevResearch.4.043179
- “Core–Shell” Diamond Nanoparticles with NV– Centers and a Highly Isotopically Enriched 13C Shell as a Promising Hyperpolarization Agent Y. Mindarava et al. https://doi.org/10.1021/acs.jpcc.1c08283
- Triplet-DNP in magnetically oriented microcrystal arrays A. Kagawa et al. https://doi.org/10.1016/j.jmr.2023.107439
- Introduction to “Geoffrey Bodenhausen Festschrift” D. Abergel & F. Ferrage https://doi.org/10.5194/mr-4-111-2023
- N-Heteroacenes as an Organic Gain Medium for Room-Temperature Masers M. Attwood et al. https://doi.org/10.1021/acs.chemmater.3c00640
- Speedup of nuclear spin diffusion in hyperpolarized solids Y. Wang & K. Takeda https://doi.org/10.1088/1367-2630/ac0d6e
- Optically Hyperpolarized Materials for Levitated Optomechanics M. Steiner et al. https://doi.org/10.22331/q-2025-12-03-1928
- 13 C hyperpolarization with nitrogen-vacancy centers in micro- and nanodiamonds for sensitive magnetic resonance applications R. Blinder et al. https://doi.org/10.1126/sciadv.adq6836
- Quasi-continuous cooling of a microwave mode on a benchtop using hyperpolarized NV− diamond W. Ng et al. https://doi.org/10.1063/5.0076460
- Tailoring Coherent Microwave Emission from a Solid‐State Hybrid System for Room‐Temperature Microwave Quantum Electronics K. Wang et al. https://doi.org/10.1002/advs.202401904
- Modelling and correcting the impact of RF pulses for continuous monitoring of hyperpolarized NMR G. von Witte et al. https://doi.org/10.5194/mr-4-175-2023
- Overtone Rabi oscillation of optically polarized triplet electron spins and nuclear hyperpolarization in powder K. Miyanishi et al. https://doi.org/10.1103/df6v-ml76
13 citations as recorded by crossref.
- Robust external spin-hyperpolarization of quadrupolar nuclei enabled by strain L. Chen et al. https://doi.org/10.1103/PhysRevB.109.L180102
- Macroscopic hyperpolarization enhanced with quantum optimal control A. Marshall et al. https://doi.org/10.1103/PhysRevResearch.4.043179
- “Core–Shell” Diamond Nanoparticles with NV– Centers and a Highly Isotopically Enriched 13C Shell as a Promising Hyperpolarization Agent Y. Mindarava et al. https://doi.org/10.1021/acs.jpcc.1c08283
- Triplet-DNP in magnetically oriented microcrystal arrays A. Kagawa et al. https://doi.org/10.1016/j.jmr.2023.107439
- Introduction to “Geoffrey Bodenhausen Festschrift” D. Abergel & F. Ferrage https://doi.org/10.5194/mr-4-111-2023
- N-Heteroacenes as an Organic Gain Medium for Room-Temperature Masers M. Attwood et al. https://doi.org/10.1021/acs.chemmater.3c00640
- Speedup of nuclear spin diffusion in hyperpolarized solids Y. Wang & K. Takeda https://doi.org/10.1088/1367-2630/ac0d6e
- Optically Hyperpolarized Materials for Levitated Optomechanics M. Steiner et al. https://doi.org/10.22331/q-2025-12-03-1928
- 13 C hyperpolarization with nitrogen-vacancy centers in micro- and nanodiamonds for sensitive magnetic resonance applications R. Blinder et al. https://doi.org/10.1126/sciadv.adq6836
- Quasi-continuous cooling of a microwave mode on a benchtop using hyperpolarized NV− diamond W. Ng et al. https://doi.org/10.1063/5.0076460
- Tailoring Coherent Microwave Emission from a Solid‐State Hybrid System for Room‐Temperature Microwave Quantum Electronics K. Wang et al. https://doi.org/10.1002/advs.202401904
- Modelling and correcting the impact of RF pulses for continuous monitoring of hyperpolarized NMR G. von Witte et al. https://doi.org/10.5194/mr-4-175-2023
- Overtone Rabi oscillation of optically polarized triplet electron spins and nuclear hyperpolarization in powder K. Miyanishi et al. https://doi.org/10.1103/df6v-ml76
Saved (final revised paper)
Latest update: 30 Jul 2026
Short summary
We show 13C spin hyperpolarization using laser irradiation at room temperature in two different systems: 1. pentacene doped in organic crystals of benzoic acid and 2. nitrogen-vacancy (NV) color centers in microdiamonds. The 13C NMR signal was enhanced by a factor of > 3000 using pentacene and > 300 using NV centers as polarization sources. We analyze the pros and cons of these two systems and discuss their prospects for room-temperature enhancement of NMR signals.
We show 13C spin hyperpolarization using laser irradiation at room temperature in two different...
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