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A nonconjugated radical polymer with stable red luminescence in the solid state
Materials Horizons ( IF 12.2 ) Pub Date : 2022-07-12 , DOI: 10.1039/d2mh00808d Zhaoyu Wang 1 , Xinhui Zou 1 , Yi Xie 2 , Haoke Zhang 1 , Lianrui Hu 1 , Christopher C S Chan 1 , Ruoyao Zhang 1 , Jing Guo 3 , Ryan T K Kwok 1 , Jacky W Y Lam 1 , Ian D Williams 1 , Zebing Zeng 3 , Kam Sing Wong 1 , C David Sherrill 2 , Ruquan Ye 4 , Ben Zhong Tang 5
Materials Horizons ( IF 12.2 ) Pub Date : 2022-07-12 , DOI: 10.1039/d2mh00808d Zhaoyu Wang 1 , Xinhui Zou 1 , Yi Xie 2 , Haoke Zhang 1 , Lianrui Hu 1 , Christopher C S Chan 1 , Ruoyao Zhang 1 , Jing Guo 3 , Ryan T K Kwok 1 , Jacky W Y Lam 1 , Ian D Williams 1 , Zebing Zeng 3 , Kam Sing Wong 1 , C David Sherrill 2 , Ruquan Ye 4 , Ben Zhong Tang 5
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Organic radicals are unstable and stable radicals usually display non-luminescent properties. Luminescent radicals possess the all-in-one properties of optoelectronics, electronics, and magnetics. To date, the reported structures of luminescent radicals are limited to triphenylmethyl radical derivatives and their analogues, which are stabilized with extended π-conjugation. Here, we demonstrate the first example of a nonconjugated luminescent radical. In spite of the lack of delocalized π-stabilization, the radical polymer readily emits red luminescence in the solid state. A traditional luminescent quencher, 2,2,6,6-tetramethylpiperidin-1-yl turned into a red chromophore when grafted onto a polymer backbone. Experimental data confirm that the emission is associated with the nitroxide radicals and is also affected by the packing of the polymer. This work discloses a novel class of luminescent radicals and a distinctive pathway for luminescence from open-shell materials.
中文翻译：
一种在固态下具有稳定红色发光的非共轭自由基聚合物
有机自由基是不稳定的，稳定的自由基通常表现出不发光的特性。发光自由基具有光电子学、电子学和磁学的多合一特性。迄今为止，报道的发光自由基的结构仅限于三苯甲基自由基衍生物及其类似物，它们通过扩展的 π 共轭来稳定。在这里，我们展示了非共轭发光自由基的第一个例子。尽管缺乏离域 π 稳定性，但自由基聚合物在固态下很容易发出红色发光。传统的发光猝灭剂 2,2,6,6-四甲基哌啶-1-基在接枝到聚合物骨架上时会变成红色发色团。实验数据证实，排放与氮氧自由基有关，也受聚合物填充的影响。
更新日期：2022-07-12
中文翻译：
一种在固态下具有稳定红色发光的非共轭自由基聚合物
有机自由基是不稳定的，稳定的自由基通常表现出不发光的特性。发光自由基具有光电子学、电子学和磁学的多合一特性。迄今为止，报道的发光自由基的结构仅限于三苯甲基自由基衍生物及其类似物，它们通过扩展的 π 共轭来稳定。在这里，我们展示了非共轭发光自由基的第一个例子。尽管缺乏离域 π 稳定性，但自由基聚合物在固态下很容易发出红色发光。传统的发光猝灭剂 2,2,6,6-四甲基哌啶-1-基在接枝到聚合物骨架上时会变成红色发色团。实验数据证实，排放与氮氧自由基有关，也受聚合物填充的影响。
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