{
  "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.",
  "abstract_shown": true,
  "affiliations": [
    "Department of Chemistry, Graduate School of Science, The University of Tokyo, Tokyo113-0033, Japan.",
    "School of Mathematical and Physical Sciences, University of Sheffield, SheffieldS3 7RT, U.K.",
    "Department of Chemistry, Graduate School of Science and Engineering, Saitama University, 255 Shimo-Okubo, Sakura-ku, Saitama338-8570, Japan.",
    "Institute for Quantum Life Science, National Institutes for Quantum Science and Technology (QST), 4-9-1 Anagawa, Inage-ku, Chiba263-8555, Japan.",
    "James Watt School of Engineering, University of Glasgow, GlasgowG12 8QQ, U.K.",
    "JEOL Ltd. , 3-1-2 Musashino, Akishima, Tokyo196-8558, Japan.",
    "Institute for Molecular Science , Nishigonaka 38, Myodaiji, Okazaki, Aichi444-8585, Japan.",
    "Center for Life Photonic Innovation, Kobe University, 1-1 Rokkodaicho Nada-ku, Kobe657-8501, Japan.",
    "Department of Chemistry, Graduate School of Science, Kobe University, 1-1, Rokkodai-Cho, Nada-ku, Kobe657-8501, Japan.",
    "CREST, JST, Honcho 4-1-8, Kawaguchi, Saitama332-0012, Japan."
  ],
  "article_type": "research article",
  "arxiv": null,
  "author_total": 14,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Miku Inoue"
    },
    {
      "affs": [
        0
      ],
      "name": "Wataru Ishii"
    },
    {
      "affs": [
        1
      ],
      "name": "Thomas W Bradbury",
      "orcid": "0009-0004-1194-5242"
    },
    {
      "affs": [
        2,
        3
      ],
      "name": "Hiroki Nagashima"
    },
    {
      "affs": [
        4
      ],
      "name": "Alistair Inglis",
      "orcid": "0000-0001-6371-6047"
    },
    {
      "affs": [
        5
      ],
      "name": "Yoshitaka Aoyama"
    },
    {
      "affs": [
        5
      ],
      "name": "Yusuke Nishiyama",
      "orcid": "0000-0001-7136-1127"
    },
    {
      "affs": [
        6
      ],
      "name": "Mizue Asada"
    },
    {
      "affs": [
        6
      ],
      "name": "Toshikazu Nakamura",
      "orcid": "0000-0001-8672-0946"
    },
    {
      "affs": [
        2
      ],
      "name": "Kiminori Maeda",
      "orcid": "0000-0001-7419-343X"
    },
    {
      "affs": [
        7,
        8,
        9
      ],
      "name": "Yasuhiro Kobori"
    },
    {
      "affs": [
        1
      ],
      "name": "Jenny Clark",
      "orcid": "0000-0001-9664-967X"
    },
    {
      "affs": [
        4
      ],
      "name": "Sam L Bayliss",
      "orcid": "0000-0002-1156-7243"
    },
    {
      "affs": [
        0,
        9
      ],
      "name": "Nobuhiro Yanai",
      "orcid": "0000-0003-0297-6544"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/5zm6qc60ebj2f.bib",
  "cited_by": 0,
  "doi": "10.1021/jacs.6c12867",
  "fulltext_url": "https://europepmc.org/articles/PMC13693451",
  "id": "5zm6qc60ebj2f",
  "issns": [
    "0002-7863",
    "1520-5126"
  ],
  "landing_url": "https://europepmc.org/article/MED/42912331",
  "language": "eng",
  "licence": "CC-BY-NC-ND",
  "licence_label": "CC BY-NC-ND",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by-nc-nd/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "2504|Magnetism in coordination complexes"
    ]
  ],
  "openalex": "W7221158667",
  "pdf_url": "https://europepmc.org/articles/PMC13693451?pdf=render",
  "pmcid": "PMC13693451",
  "pmid": "42912331",
  "published": "2026-10-01",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/5zm6qc60ebj2f.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:20:14Z",
      "native_id": "MED:42912331",
      "source": "europepmc",
      "url": "https://europepmc.org/article/MED/42912331"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:2504|Magnetism in coordination complexes",
      "subfield": "materials-polymers"
    }
  ],
  "title": "Optically Addressable Spins in a Metal-Organic Framework.",
  "title_text": "Optically Addressable Spins in a Metal-Organic Framework.",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:20:14Z",
  "url": "https://research.draconitic.com/paper/5zm6qc60ebj2f",
  "venue": "Journal of the American Chemical Society",
  "versions": []
}