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.

中文翻译：

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用于信息存储和加密的聚集诱导发射预荧光团全色发光材料的机械化学制造


通过机械化学开发发光材料体现了材料科学领域一个引人注目但复杂的前沿领域。在此，我们描述了一种合成明亮发光聚合物的方法，该方法通过聚集诱导发射（AIE）预荧光团与通用聚合物的机械化学耦合来实现。一系列与 2,2,6,6-四甲基哌啶-1-氧基 (TEMPO) 基团相连的 AIE 部分被合成为前荧光团，最初由于分子内猝灭而表现出微弱的荧光。值得注意的是，这些预荧光团与大分子自由基的机械偶联（通过通用聚合物的球磨产生）导致所得聚合物内的荧光显着增强。我们仔细评估了 AIE 改性聚合物的可调发射，涵盖从可见光到近红外区域的广泛光谱。这项研究阐明了此类材料在刺激响应系统中的潜力，重点是信息存储和加密显示。通过规避发光聚合物传统合成固有的复杂性，这种方法为基于 AIE 的聚合物领域提供了一个范例，对先进技术应用具有重要意义。