Wen Yue, Zhou Qianwen, Su Xianlong, Hu Donghao, Xu Ming, Feng Wei, Li Fuyou
Department of Chemistry, State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai 200433, China.
ACS Appl Mater Interfaces. 2022 Mar 9;14(9):11681-11689. doi: 10.1021/acsami.2c00683. Epub 2022 Feb 28.
Stimuli-responsive luminescent materials with time-dependent color are highly desirable in optical information encryption. In this study, multiple time-dependent color processes are achieved by light-responsive afterglow materials through the strategy of absorption compensation. Based on the single-emission band of light-responsive afterglow materials, the color of samples could show a time-dependent change from colored to colorless over several seconds. The strategy possesses high flexibility such that the stimulus light and emission color of light-responsive afterglow materials can be adjusted conveniently to adapt to various scenes. It is also beneficial to expand the capacity and complexity of information encryption. A three-color, time-resolved anticounterfeiting, and data encryption mode is demonstrated. This facile absorption compensation method based on light-response afterglow materials may promote the development of advanced dynamic information encryption.
具有随时间变化颜色的刺激响应发光材料在光学信息加密中极具吸引力。在本研究中，通过吸收补偿策略，光响应余辉材料实现了多种随时间变化的颜色过程。基于光响应余辉材料的单发射带，样品的颜色在几秒钟内可呈现从有色到无色的随时间变化。该策略具有高度灵活性，使得光响应余辉材料的刺激光和发射颜色能够方便地调整，以适应各种场景。这也有利于扩展信息加密的容量和复杂性。展示了一种三色、时间分辨的防伪和数据加密模式。这种基于光响应余辉材料的简便吸收补偿方法可能会推动先进动态信息加密的发展。
