磷光
荧光粉
光化学
材料科学
分子间力
辐照
荧光
化学
热运动
分子
光电子学
光学
有机化学
物理
热力学
核物理学
作者
Long Gu,Huifang Shi,Mingxing Gu,Kun Ling,Huili Ma,Suzhi Cai,Lulu Song,Chaoqun Ma,Hai Li,Guichuan Xing,Xiao‐Chun Hang,Jiewei Li,Yaru Gao,Wei Yao,Zhigang Shuai,Zhongfu An,Xiaogang Liu,Wei Huang
标识
DOI:10.1002/anie.201712381
摘要
Smart materials with ultralong phosphorescence are rarely investigated and reported. Herein we report on a series of molecules with unique dynamic ultralong organic phosphorescence (UOP) features, enabled by manipulating intermolecular interactions through UV light irradiation. Our experimental data reveal that prolonged irradiation of single-component organic phosphors of PCzT, BCzT, and FCzT under ambient conditions can activate UOP with emission lifetimes spanning from 1.8 to 1330 ms. These phosphors can also be deactivated back to their original states with short-lived phosphorescence by UV irradiation for 3 h at room temperature or through thermal treatment. Additionally, the dynamic UOP was applied successfully for a visual anti-counterfeiting application. These findings may provide unique insight into dynamic molecular motion for optical processing and expand the scope of smart-response materials for broader applications.
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