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Triplet-ground-state nonalternant nanographene with high stability and long spin lifetimes

Author

Listed:
  • Weixiang Zhou

    (The University of Hong Kong)

  • Yiyang Fei

    (The University of Hong Kong)

  • Yu-Shuang Zhang

    (South China University of Technology)

  • Xiaohe Miao

    (Westlake University)

  • Shang-Da Jiang

    (South China University of Technology)

  • Junzhi Liu

    (The University of Hong Kong
    The University of Hong Kong
    Materials Innovation Institute for Life Sciences and Energy (MILES), HKU-SIRI)

Abstract

High-spin carbon-based polyradicals exhibit significant potential for applications in quantum information storage and sensing; however, their practical application is hampered by limited structural diversity and chemical instability. Here, we report a straightforward synthetic and isolation method for synthesizing a nonalternant nanographene (1) with a triplet ground state. Moving beyond the classic m-xylylene scaffold for high-spin organic molecules, seven-five-seven (7–5–7)-membered rings are introduced to create stable high-spin diradicals with half-lives (t1/2) as long as 101 days. Moreover, considering the spin relaxation of compound 1, with a spin–lattice relaxation time (T1) of 53.55 ms and a coherence time (Tm) of 3.41 μs at 10 K, the compound 1 shows great promise for applications in spin-based information retention and quantum computing.

Suggested Citation

  • Weixiang Zhou & Yiyang Fei & Yu-Shuang Zhang & Xiaohe Miao & Shang-Da Jiang & Junzhi Liu, 2025. "Triplet-ground-state nonalternant nanographene with high stability and long spin lifetimes," Nature Communications, Nature, vol. 16(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:16:y:2025:i:1:d:10.1038_s41467-024-54276-0
    DOI: 10.1038/s41467-024-54276-0
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