Dynamic multimodal information encryption combining programmable structural coloration and switchable circularly polarized luminescence

Zeyu Feng, Jialei Li, Peng Yang, Xiangxiang Xu, Di Wang, Jiahe Li, Chutian Zhang, Jingguo Li, Hongli Zhang (), Gang Zou () and Xin Chen ()
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Zeyu Feng: University of Science and Technology of China
Jialei Li: University of Science and Technology of China
Peng Yang: University of Science and Technology of China
Xiangxiang Xu: University of Science and Technology of China
Di Wang: University of Science and Technology of China
Jiahe Li: University of Science and Technology of China
Chutian Zhang: University of Science and Technology of China
Jingguo Li: University of Science and Technology of China
Hongli Zhang: University of Science and Technology of China
Gang Zou: University of Science and Technology of China
Xin Chen: Suzhou Laboratory

Nature Communications, 2025, vol. 16, issue 1, 1-12

Abstract: Abstract Multimodal optical-materials are highly desirable due to their advantages in enhancing information security, though independent modulation is challenging, especially accurately controlling the orthogonal relationship between the structural coloration (SC) and fluorescence (FL) pattern. Herein, we report a strategy which combines programmable structural coloration and switchable circularly polarized luminescence (CPL) for multimodal information encryption. Using photomask with aligned grating, programmable periodic patterns are fabricated on a polydiacetylene (PDA) gel film, which produces image in tunable structural colors. Introducing a chiral fluorescence layer containing perovskite nanocrystals and twisted-stacking Ag nanowires (NWs) bilayers, which provides stimuli-responsive FL and CPL with high dissymmetry factor (glum, up to 1.3). Importantly, the structural coloration information and FL patterns (including CPL pattern) can be independently modulated without mutual interference, even selectively concealed or exposed by varying microstructure design of the cross-linked PDA gel or by acetonitrile treatment.

Date: 2025
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DOI: 10.1038/s41467-025-57649-1

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