{
  "abstract": "Doping a luminescent tris(2,4,6-trichlorophenyl)methyl diradical m(TTM)2 into a host crystal of its diamagnetic precursor m(HTTM)2 creates a molecular color center with enhanced optical-spin interface properties important for quantum sensing. Optical polarization of the |T0⟩ sublevel of the diradical triplet ground state is achieved by spin-selective intersystem crossing from the |T+⟩ and |T-⟩sublevels of the triplet excited state at ambient and cryogenic temperatures. Coherent spin control of m(TTM)2 doped into m(HTTM)2 using pulsed optically detected magnetic resonance (ODMR) spectroscopy results in a ten-fold improvement in ODMR contrast over that observed for randomly ordered m(TTM)2 using continuous-wave ODMR The diradical doped crystals achieve spin coherence times of 2.8, 3.4, and 7.4 s at 294 K, 85 K, and 5 K, respectively. The diradical photoluminescence is sensitive to weak applied magnetic fields independent of temperature, excitation wavelength and dopant concentration, providing a promising pathway towards robust quantum sensing of anisotropic magnetic fields under ambient conditions.",
  "abstract_shown": true,
  "affiliations": [
    "Department of Chemistry, Institute for Quantum Information Science Research and Engineering, and Center for Molecular Quantum Transduction",
    "Northwestern University",
    "Applied Physics Program"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 8,
  "authors": [
    {
      "affs": [
        0,
        1
      ],
      "name": "Sebastian M. Kopp",
      "orcid": "0000-0003-0324-6404"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Jonathan R. Palmer",
      "orcid": "0000-0003-4010-8967"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Brian T. Phelan",
      "orcid": "0000-0002-5849-0319"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Kathryn R. Peinkofer",
      "orcid": "0009-0002-2409-2002"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Shunta Nakamura",
      "orcid": "0009-0004-4997-6642"
    },
    {
      "affs": [
        2,
        0,
        1
      ],
      "name": "parker watts",
      "orcid": "0009-0004-6376-3811"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Matthew D. Krzyaniak",
      "orcid": "0000-0002-8761-7323"
    },
    {
      "affs": [
        2,
        0,
        1
      ],
      "name": "Michael R. Wasielewski",
      "orcid": "0000-0003-2920-5440"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/abgzsxxvcp55r.bib",
  "cited_by": 6,
  "doi": "10.1021/acscentsci.6c00525",
  "fulltext_url": null,
  "id": "abgzsxxvcp55r",
  "issns": [
    "2374-7943",
    "2374-7951"
  ],
  "landing_url": "https://doi.org/10.1021/acscentsci.6c00525",
  "language": "en",
  "licence": "CC-BY",
  "licence_label": "CC BY",
  "licence_source": "journal",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "2504|Magnetism in coordination complexes"
    ]
  ],
  "openalex": "W7166581972",
  "pdf_url": "https://pubs.acs.org/doi/pdf/10.1021/acscentsci.6c00525?ref=article_openPDF",
  "pmcid": "PMC13397432",
  "pmid": "42500038",
  "published": "2026-06-29",
  "publisher": "American Chemical Society",
  "ris": "https://research.draconitic.com/paper/abgzsxxvcp55r.ris",
  "sources": [
    {
      "first_seen": "2026-11-05T13:21:14Z",
      "native_id": "W7166581972",
      "source": "openalex",
      "url": "https://doi.org/10.1021/acscentsci.6c00525"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:2504|Magnetism in coordination complexes",
      "subfield": "materials-polymers"
    }
  ],
  "title": "Molecular Diradical Spin Qubits in a Crystalline Host as a Platform for Quantum Sensing",
  "title_text": "Molecular Diradical Spin Qubits in a Crystalline Host as a Platform for Quantum Sensing",
  "type": "peer-reviewed",
  "updated_at": "2026-11-09T13:21:23Z",
  "url": "https://research.draconitic.com/paper/abgzsxxvcp55r",
  "venue": "ACS Central Science",
  "versions": []
}