High-Spin Emission and Giant Magnetoluminescence from a Luminescent Organic Triradical

Open AccessCCS ChemistryRESEARCH ARTICLES8 Sep 2025High-Spin Emission and Giant Magnetoluminescence from a Luminescent Organic Triradical Shengjie Wang, Xing Wang, Zihao Zhu, Li Shen, Yujie Zhu, Alim Abdurahman, Hongwei Ma, Qiming Peng and Geyu Lu Shengjie Wang , Xing Wang , Zihao Zhu , Li Shen , Yujie Zhu , Alim Abdurahman , Hongwei Ma , Qiming Peng and Geyu Lu https://doi.org/10.31635/ccschem.025.202506229 SectionsSupplemental MaterialAboutPDF ToolsAdd to favoritesDownload CitationsTrack Citations ShareFacebookTwitterLinked InEmail Organic triradicals represent a distinctive subclass of high-spin open-shell molecules with significant potential in organic magnets, spintronics, and quantum information technologies. However, the integration of luminescent properties with high-spin states—and the realization of spin-dependent optical modulation—remains largely unexplored. Here, we present a luminescent organic triradical, Cz-3TTM, that exhibits efficient quartet-state emission at the single-molecule level, enabling spin-optical modulation. As a result, Cz-3TTM shows giant magnetoluminescence (ML > 600%) at 2 K under 7 T and strong thermally activated emission, with an intensity enhancement exceeding 3300% across the 2~120 K range. Moreover, it features relatively long spin relaxation (T1 = 4.726 μs) and coherence (Tm = 401.4 ns) times even at room temperature. These findings initiate the exploration of spin—optical modulation in luminescent triradicals and establish a molecular platform that bridges high-spin states with optoelectronic functionality for emerging quantum technologies. Download figure Download PowerPoint Previous articleNext article FiguresReferencesRelatedDetails Issue AssignmentNot Yet AssignedSupporting Information Copyright & Permissions© 2025 Chinese Chemical Society Downloaded 23 times PDF downloadLoading ...