Mechanochemical Fabrication of Full-Color Luminescent Materials from Aggregation-Induced Emission Prefluorophores for Information Storage and Encryption

作者：Huilin Xie, Jingchun Wang, Zhenchen Lou, Lianrui Hu, Shinsuke Segawa, Xiaowo Kang, Weijun Wu, Zhi Luo, Ryan T. K. Kwok, Jacky W. Y. Lam, Jianquan Zhang, Ben Zhong Tang · 发表于：Journal of the American Chemical Society · 年份：2024 · DOI：10.1021/jacs.4c02954 · 被引用次数：79 · 研究领域：Luminescence and Fluorescent Materials、Polydiacetylene-based materials and applications、Supramolecular Chemistry and Complexes

The development of luminescent materials via mechanochemistry embodies a compelling yet intricate frontier within materials science. Herein, we delineate a methodology for the synthesis of brightly luminescent polymers, achieved by the mechanochemical coupling of aggregation-induced emission (AIE) prefluorophores with generic polymers. An array of AIE moieties tethered to the 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO) radical are synthesized as prefluorophores, which initially exhibit weak fluorescence due to intramolecular quenching. Remarkably, the mechanical coupling of these prefluorophores with macromolecular radicals, engendered through ball milling of generic polymers, leads to substantial augmentation of fluorescence within the resultant polymers. We meticulously evaluate the tunable emission of the AIE-modified polymers, encompassing an extensive spectrum from the visible to the near-infrared region. This study elucidates the potential of such materials in stimuli-responsive systems with a focus on information storage and encryption displays. By circumventing the complexity inherent to the conventional synthesis of luminescent polymers, this approach contributes a paradigm to the field of AIE-based polymers with implications for advanced technological applications.