余辉
材料科学
超声
掺杂剂
发光
微晶
纳米技术
水溶液
猝灭(荧光)
化学工程
基质(化学分析)
激发态
荧光
光化学
分析化学(期刊)
光电子学
复合材料
兴奋剂
光学
结晶学
化学
物理化学
有机化学
原子物理学
物理
伽马射线暴
天文
工程类
作者
Xinjian Deng,Ju Huang,Jiuyang Li,Guangming Wang,Kaka Zhang
标识
DOI:10.1002/adfm.202214960
摘要
Abstract In contrast to their fluorescence counterparts, stimuli‐responsive organic afterglow materials display distinct advantages to function normally in the presence of strong fluorescence background. However, most of the stimuli‐responsive afterglow materials can only work in their solid states with those in aqueous medium being rarely reported. In addition, the types of these materials are limited to mechanical force‐, pH‐, ion‐, and temperature‐responsive ones. Here, a serendipitous finding of sonication‐responsive organic afterglow emulsions in aqueous medium is reported. The afterglow emulsions are produced by dopant‐matrix strategy and emulsion technique. In‐depth studies reveal that the key to achieve the sonication responsiveness is the selection of a specialized organic matrix that can form microcrystalline particles in aqueous medium with the aid of surfactants. In matrix's microcrystalline state, the triplet excited states of luminescent dopant within the matrix can be protected to exhibit room‐temperature afterglow. Under sonication, matrix's microcrystalline structure can be disrupted and consequently the triplet excited states of luminescent dopants lose protection to show afterglow quenching. To the best of the authors’ knowledge, this study represents the first report of sonication‐responsive afterglow materials in aqueous medium, which show promising biomedical applications.
科研通智能强力驱动
Strongly Powered by AbleSci AI