Nie Fei, Yan Dongpeng
Beijing Key Laboratory of Energy Conversion and Storage Materials, and Key Laboratory of Radiopharmaceuticals, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing, 100875, P. R. China.
Nat Commun. 2024 Jun 29;15(1):5519. doi: 10.1038/s41467-024-49886-7.
Dynamically responsive materials, capable of reversible changes in color appearance and/or photoemission upon external stimuli, have attracted substantial attention across various fields. This study presents an effective approach wherein switchable modulation of photochromism and ultralong phosphorescence can be achieved simultaneously in a zero-dimensional organic-inorganic halide hybrid glass doped with 4,4´-bipyridine. The facile fabrication of large-scale glasses is accomplished through a combined grinding-melting-quenching process. The persistent luminescence can be regulated through the photochromic switch induced by photo-generated radicals. Furthermore, the incorporation of the aggregation-induced chirality effect generates intriguing circularly polarized luminescence, with an optical dissymmetry factor (g) reaching the order of 10. Exploiting the dynamic ultralong phosphorescence, this work further achieves promising applications, such as three-dimensional optical storage, rewritable photo-patterning, and multi-mode anti-counterfeiting with ease. Therefore, this study introduces a smart hybrid glass platform as a new photo-responsive switchable system, offering versatility for a wide array of photonic applications.
能够在外部刺激下发生颜色外观和/或光发射可逆变化的动态响应材料,在各个领域都引起了广泛关注。本研究提出了一种有效的方法,即在掺杂4,4´-联吡啶的零维有机-无机卤化物混合玻璃中,可同时实现光致变色和超长磷光的可切换调制。通过研磨-熔化-淬火相结合的过程,实现了大规模玻璃的简便制备。持久发光可通过光生自由基诱导的光致变色开关进行调节。此外,聚集诱导手性效应的引入产生了有趣的圆偏振发光,光学不对称因子(g)达到10的量级。利用动态超长磷光,这项工作进一步轻松实现了如三维光存储、可重写光图案化和多模式防伪等有前景的应用。因此,本研究引入了一种智能混合玻璃平台作为一种新型的光响应可切换系统,为广泛的光子应用提供了多功能性。