Triplet-ground-state nonalternant nanographene with high stability and long spin lifetimes.
basic_science · Level V
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- Record sourced from PubMed, PMID 39856036.
- Also identified by DOI 10.1038/s41467-024-54276-0 and PMC identifier 11760968.
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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 (t<sub>1/2</sub>) as long as 101 days. Moreover, considering the spin relaxation of compound 1, with a spin-lattice relaxation time (T<sub>1</sub>) of 53.55 ms and a coherence time (T<sub>m</sub>) of 3.41 μs at 10 K, the compound 1 shows great promise for applications in spin-based information retention and quantum computing.