磷光
材料科学
激发
光子学
光电子学
光化学
发光
荧光
光学
化学
物理
量子力学
作者
Liping Bian,Huili Ma,Wenpeng Ye,Anqi Lv,He Wang,Wenyong Jia,Long Gu,Huifang Shi,Zhongfu An,Wei Huang
标识
DOI:10.1007/s11426-020-9761-x
摘要
Ultralong organic phosphorescence (UOP) materials have roused considerable attention in the field of photonics and optoelectronics owing to the feature of long-lived emission lifetimes. However, to develop UOP materials with color-tunability is still a formidable challenge. Here, we report a class of UOP materials containing carbonyl, amino or amide groups, exhibiting color-tunable persistent luminescence ranging from blue (458 nm) to yellow-green (508 nm) under different UV wavelength excitation. Taken theoretical and experimental results together, we conclude that the excitation dependent color-tunable UOP emission is ascribed to multiple emission centers from single molecular and aggregated states in crystal. Given color-tunable UOP feature, these materials are used to successfully realize visual UV-light detection. This finding not only provides a strategy to design new organic phosphorescent molecules with colorful emission, but also extends the scope of the applications of purely organic phosphorescent materials.
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