磷光
放射发光
闪烁体
材料科学
磷光有机发光二极管
闪烁
堆积
光致发光
光电子学
光学
荧光
核磁共振
物理
探测器
作者
Mengyang Dong,Anqi Lv,Xin Zou,Nan Gan,Chenxi Peng,Meijuan Ding,Xiao Wang,Zixing Zhou,Huan Chen,Huili Ma,Long Gu,Zhongfu An,Wei Huang
标识
DOI:10.1002/adma.202310663
摘要
Abstract Organic phosphorescent scintillating materials have shown great potential for applications in radiography and radiation detection due to their efficient utilization of excitons. However, revealing the relationship between molecule stacking and the phosphorescent radioluminescence of scintillators is still challenging. This study reports on two phenothiazine derivatives with polymorphism‐dependent phosphorescence radioluminescence. The experiments reveal that molecule stacking significantly affects the non‐radiation decay of the triplet excitons of scintillators, which further determines the phosphorescence scintillation performance under X‐ray irradiation. These phosphorescent scintillators exhibit high radio stability and have a low detection limit of 278 nGys −1 . Additionally, the potential application of these scintillators in X‐ray radiography, based on their X‐ray excited radioluminescence properties, is demonstrated. These findings provide a guideline for obtaining high‐performance phosphorescent scintillating materials by shedding light on the effect of crystal packing on the radioluminescence of organic molecules.
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