Zhai Jiawei, Ai Qi, Li Huaqing, Liu Zugang, Hu Xiaoguang
College of Optical and Electronic Technology, China Jiliang University, No. 258, Xueyuan Street, Hangzhou, 310018, P. R. China.
School of Materials Science and Engineering, Zhengzhou University, No.100 Science Avenue, Zhengzhou, 450001, P. R. China.
Adv Sci (Weinh). 2025 Mar;12(9):e2414881. doi: 10.1002/advs.202414881. Epub 2025 Jan 13.
Photoswitchable fluorescent materials have gained significant attention for their potential in advanced information encryption and anti-counterfeiting applications. However, the common use of UV light to trigger the isomerization processes leads to photobleaching and poor fatigue resistance. Visible-light-driven fluorescent photoswitches are highly desirable, but achieving high cyclization yield remains challenging. Herein, it is reported that all visible-light-driven turn-on fluorescence in dimethoxyphenyl functionalized diarylethene isomers. The open-ring form of o-DMPB and p-DMPB exhibits near quantitative conversion yields (up to 94%) under 405 nm visible light, attributed to the strong electron-donating character. In contrast, the meta isomer m-DMPB shows limited response to visible light, with a ring-closing yield of 22%. Furthermore, all photoswitches display good thermal stability, photostability, and fatigue resistance. Notably, o-DMPB demonstrates promising applications in anti-counterfeiting, information encryption, and photorewritable patterns. This work provides a valuable strategy for the development of high-performance fluorescent photoswitches.
可光开关荧光材料因其在先进信息加密和防伪应用中的潜力而备受关注。然而，常用紫外光触发异构化过程会导致光漂白和抗疲劳性差。可见光驱动的荧光光开关非常理想，但实现高环化产率仍具有挑战性。在此，报道了在二甲氧基苯基官能化的二芳基乙烯异构体中实现了全可见光驱动的开启式荧光。邻二甲基苯基硼酸盐（o-DMPB）和对二甲基苯基硼酸盐（p-DMPB）的开环形式在405nm可见光下表现出近乎定量的转化率（高达94%），这归因于其强供电子特性。相比之下，间位异构体间二甲基苯基硼酸盐（m-DMPB）对可见光的响应有限，闭环产率为22%。此外，所有光开关均表现出良好的热稳定性、光稳定性和抗疲劳性。值得注意的是，o-DMPB在防伪、信息加密和光可重写图案方面展示了有前景的应用。这项工作为开发高性能荧光光开关提供了有价值的策略。
