Wei Juan, Zhu Mingye, Du Tingchen, Li Jangang, Dai Peiling, Liu Chenyuan, Duan Jiayu, Liu Shujuan, Zhou Xingcheng, Zhang Sudi, Guo Luo, Wang Hao, Ma Yun, Huang Wei, Zhao Qiang
State Key Laboratory of Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM) & Institute of Flexible Electronics (Future Technology), Nanjing University of Posts and Telecommunications (NUPT), Nanjing, 210023, P. R. China.
Frontiers Science Center for Flexible Electronics (FSCFE), MIIT Key Laboratory of Flexible Electronics (KLFE), Northwestern Polytechnical University, Xi'an, 710072, P.R. China.
Nat Commun. 2023 Aug 10;14(1):4839. doi: 10.1038/s41467-023-40193-1.
Persistent room temperature phosphorescent materials with unique mechanical properties and robust optical properties have great potential in flexible electronics and photonics. However, developing such materials remains a formidable challenge. Here, we present highly stretchable, lightweight, and multicolored persistent luminescence elastomers, produced by incorporating ionic room temperature phosphorescent polymers and polyvinyl alcohol into a polydimethylsiloxane matrix. These prepared elastomers exhibit high optical transparency in daylight and emit bright persistent luminescence after the removal of 365 nm excitation. The homogeneous distribution of polymers within the matrix has been confirmed by confocal fluorescence microscopy, scanning electron microscopy, and atomic force microscopy. Mechanical property investigations revealed that the prepared persistent luminescence elastomers possess satisfactory stretchability. Impressively, these elastomers maintain robust optical properties even under extensive and repeated mechanical deformations, a characteristic previously unprecedented. These fantastic features make these persistent luminescence elastomers ideal candidates for potential applications in wearable devices, flexible displays, and anti-counterfeiting.
具有独特机械性能和强大光学性能的持久性室温磷光材料在柔性电子学和光子学领域具有巨大潜力。然而，开发此类材料仍然是一项艰巨的挑战。在此，我们展示了通过将离子型室温磷光聚合物和聚乙烯醇掺入聚二甲基硅氧烷基质中制备的高度可拉伸、轻质且多色的持久性发光弹性体。这些制备的弹性体在日光下表现出高光学透明度，在去除365nm激发后发出明亮的持久性发光。聚合物在基质中的均匀分布已通过共聚焦荧光显微镜、扫描电子显微镜和原子力显微镜得到证实。力学性能研究表明，制备的持久性发光弹性体具有令人满意的拉伸性。令人印象深刻的是，这些弹性体即使在广泛且重复的机械变形下仍保持强大的光学性能，这一特性以前从未有过。这些出色的特性使这些持久性发光弹性体成为可穿戴设备、柔性显示器和防伪等潜在应用的理想候选材料。
