荧光粉
材料科学
磷光
发光
单线态氧
兴奋剂
聚合物
辐照
单重态
光电子学
金属有机骨架
光化学
荧光
氧气
有机化学
激发态
化学
光学
复合材料
吸附
物理
核物理学
作者
Lixin Zang,Wenhao Shao,Min Sang Kwon,Zhiguo Zhang,Jinsang Kim
标识
DOI:10.1002/adom.202000654
摘要
Abstract A new type of luminescence switching behavior based on phosphorescence enhancement from a series of metal‐free organic phosphors doped polymers by UV‐irradiation is investigated. This phenomenon is observed only from pairs of organic phosphors and polymer matrices having a combination of appropriate triplet exciton lifetime and oxygen permeability. Systematic investigation reveals that the luminescence switching behavior of organic phosphors embedded in a specific polymeric matrix stems from the conversion of triplet oxygens to singlet oxygens by UV‐irradiation, leading to the unique phosphorescence enhancement of organic phosphors. Visualization of latent information by UV‐irradiation is demonstrated toward novel secure information communication applications.
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