聚集诱导发射
脱氢
荧光
合理设计
辐照
光化学
化学
紧身衣
紫外线
材料科学
光电子学
纳米技术
催化作用
有机化学
光学
物理
核物理学
作者
Qiaozhi Zhu,Yuqing Zhu,Weidong Liu,Xinni Ping,Xuting Cai,Jiaqi Zuo,Zhaosheng Qian,Hui Feng
标识
DOI:10.1002/chem.202202178
摘要
Herein, we propose a rational design strategy by introducing photoactive thienyl and pyridyl groups into an AIE-active tetraarylethene skeleton to achieve highly efficient photochemistry-activated fluorescence enhancement from dominantly photo-physical aggregation-induced emission behavior, and prove that such photoactivated fluorescence enhancement is perfectly suited for superstable photocontrollable dual-mode patterning applications in both solution and solid matrix. It is found that the photoactivated fluorescence of designed AIEgen is attributed to the irreversible cyclized-dehydrogenation reaction under UV irradiation, and the oxidation product has a brighter fluorescence in both solution and solid states owning to its rigid and planar structure. The overall transformation rate of the AIEgen from its opened form to dehydrogenated form is up to nearly 100 % in a short period of UV irradiation, and the fast transformation and the stable product of this photochemical reaction guarantees super stability of photocontrolled patterning, which can be applied in photoactivated dual-mode patterning and advanced anti-counterfeiting.
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