Frontiers Science Center for Flexible Electronics (FSCFE), MIIT Key Laboratory of Flexible Electronics (KLoFE), Northwestern Polytechnical University, Xi'an, 710072, P.R. China.
Key Laboratory of Flexible Electronics (KLoFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing, 211816, P.R. China.
Nat Commun. 2022 Jul 9;13(1):3995. doi: 10.1038/s41467-022-31554-3.
Scintillators that exhibit X-ray-excited luminescence have great potential in radiation detection, X-ray imaging, radiotherapy, and non-destructive testing. However, most reported scintillators are limited to inorganic or organic crystal materials, which have some obstacles in repeatability and processability. Here we present a facile strategy to achieve the X-ray-excited organic phosphorescent scintillation from amorphous copolymers through the copolymerization of the bromine-substituted chromophores and acrylic acid. These polymeric scintillators exhibit efficient X-ray responsibility and decent phosphorescent quantum yield up to 51.4% under ambient conditions. The universality of the design principle was further confirmed by a series of copolymers with multi-color radioluminescence ranging from green to orange-red. Moreover, we demonstrated their potential application in X-ray radiography. This finding not only outlines a feasible principle to develop X-ray responsive phosphorescent polymers, but also expands the potential applications of polymer materials with phosphorescence features.
具有 X 射线激发发光性能的闪烁体在辐射探测、X 射线成像、放射治疗和无损检测等领域具有巨大的应用潜力。然而，大多数报道的闪烁体仅限于无机或有机晶体材料，这些材料在可重复性和可加工性方面存在一些障碍。在这里，我们提出了一种简便的策略，通过溴取代发色团和丙烯酸的共聚反应，从无定形共聚物中实现 X 射线激发的有机磷光闪烁。这些聚合物闪烁体在环境条件下表现出高效的 X 射线响应性和高达 51.4%的磷光量子产率。通过一系列具有从绿色到橙红色的多色放射发光的共聚物，进一步证实了该设计原理的通用性。此外，我们还展示了它们在 X 射线射线照相中的潜在应用。这一发现不仅为开发对 X 射线有响应的磷光聚合物提供了一个可行的原理，而且还扩展了具有磷光特性的聚合物材料的潜在应用。
