Optically Addressable Spins in a Metal-Organic Framework.
10 affiliations
- 1Department of Chemistry, Graduate School of Science, The University of Tokyo, Tokyo113-0033, Japan.
- 2School of Mathematical and Physical Sciences, University of Sheffield, SheffieldS3 7RT, U.K.
- 3Department of Chemistry, Graduate School of Science and Engineering, Saitama University, 255 Shimo-Okubo, Sakura-ku, Saitama338-8570, Japan.
- 4Institute for Quantum Life Science, National Institutes for Quantum Science and Technology (QST), 4-9-1 Anagawa, Inage-ku, Chiba263-8555, Japan.
- 5James Watt School of Engineering, University of Glasgow, GlasgowG12 8QQ, U.K.
- 6JEOL Ltd. , 3-1-2 Musashino, Akishima, Tokyo196-8558, Japan.
- 7Institute for Molecular Science , Nishigonaka 38, Myodaiji, Okazaki, Aichi444-8585, Japan.
- 8Center for Life Photonic Innovation, Kobe University, 1-1 Rokkodaicho Nada-ku, Kobe657-8501, Japan.
- 9Department of Chemistry, Graduate School of Science, Kobe University, 1-1, Rokkodai-Cho, Nada-ku, Kobe657-8501, Japan.
- 10CREST, JST, Honcho 4-1-8, Kawaguchi, Saitama332-0012, Japan.
Abstract
Molecular spins supporting optically detected magnetic resonance (ODMR) offer unique opportunities for quantum sensing and many-body physics by combining the sensitivity and spatial resolution offered by optical spin detection with the capacity for bottom-up assembly and chemical control. Metal-organic frameworks (MOFs) are a promising architecture to leverage such opportunities since they offer control over spin placement, tunable porosity and large internal surface areas for efficient integration with sensing targets, and a richly tunable chemical space. However, optical spin readout has not been demonstrated in a MOF. Here, we report the first successful optical detection of spins in a MOF. We use a porphyrin-based aluminum MOF (Al-PMOF), which supports efficient triplet generation on the porphyrin chromophore ligands. Using electron paramagnetic resonance, we demonstrate that these triplet states support a spin coherence time (T2) on the order of a few microseconds at 50 K. Importantly, we successfully detect optically detected magnetic resonance of these triplets using near-infrared ODMR at 77 K. Optical spin readout in a MOF paves the way for next-generation quantum sensing applications that leverage bottom-up assembly.
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BibTeX
@article{inoue2026optically,
title = {{Optically Addressable Spins in a Metal-Organic Framework.}},
author = {Miku Inoue and Wataru Ishii and Thomas W Bradbury and Hiroki Nagashima and Alistair Inglis and Yoshitaka Aoyama and Yusuke Nishiyama and Mizue Asada and Toshikazu Nakamura and Kiminori Maeda and Yasuhiro Kobori and Jenny Clark and Sam L Bayliss and Nobuhiro Yanai},
journal = {Journal of the American Chemical Society},
year = {2026},
month = oct,
doi = {10.1021/jacs.6c12867},
url = {https://europepmc.org/article/MED/42912331},
note = {CC BY-NC-ND},
}
RIS
TY - JOUR
TI - Optically Addressable Spins in a Metal-Organic Framework.
AU - Miku Inoue
AU - Wataru Ishii
AU - Thomas W Bradbury
AU - Hiroki Nagashima
AU - Alistair Inglis
AU - Yoshitaka Aoyama
AU - Yusuke Nishiyama
AU - Mizue Asada
AU - Toshikazu Nakamura
AU - Kiminori Maeda
AU - Yasuhiro Kobori
AU - Jenny Clark
AU - Sam L Bayliss
AU - Nobuhiro Yanai
PY - 2026
DA - 2026/10/01
JO - Journal of the American Chemical Society
DO - 10.1021/jacs.6c12867
UR - https://europepmc.org/article/MED/42912331
AB - Molecular spins supporting optically detected magnetic resonance (ODMR) offer unique opportunities for quantum sensing and many-body physics by combining the sensitivity and spatial resolution offered by optical spin detection with the capacity for bottom-up assembly and chemical control. Metal-organic frameworks (MOFs) are a promising architecture to leverage such opportunities since they offer control over spin placement, tunable porosity and large internal surface areas for efficient integration with sensing targets, and a richly tunable chemical space. However, optical spin readout has not been demonstrated in a MOF. Here, we report the first successful optical detection of spins in a MOF. We use a porphyrin-based aluminum MOF (Al-PMOF), which supports efficient triplet generation on the porphyrin chromophore ligands. Using electron paramagnetic resonance, we demonstrate that these triplet states support a spin coherence time (T2) on the order of a few microseconds at 50 K. Importantly, we successfully detect optically detected magnetic resonance of these triplets using near-infrared ODMR at 77 K. Optical spin readout in a MOF paves the way for next-generation quantum sensing applications that leverage bottom-up assembly.
SN - 0002-7863
SN - 1520-5126
ER -