Manipulation of supramolecular behaviors and aggregation states represents an important topic in devising intriguing photofunctional systems. Here we report a two‐component macromolecular self‐assembly strategy for achieving aqueous room‐temperature phosphorescence (RTP) in purely organic systems. Amphiphilic triblock copolymers are used to modulate the self‐assembly of planar RTP molecules in aqueous solution, leading to the formation of sheet‐like RTP objects with well‐defined morphology, uniform crystalline nanostructures and excellent aqueous dispersity. In contrast, the addition of the planar RTP molecules into aqueous medium only leads to precipitation and quenching of RTP properties. Powder X‐ray diffraction and single‐crystal X‐ray diffraction studies reveal that the amphiphilic triblock copolymers can assist supramolecular columnar packing of the planar RTP molecules where multiple non‐covalent interactions stabilize the triplet excited states. Interestingly, it is found that luminescent signals of the sheet‐like RTP objects can be extracted from strong fluorescent environments by phosphorescence mode and emission lifetime measurement.

中文翻译：

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通过两组分大分子自组装策略实现纯有机的室温水性磷光。

超分子行为和聚集态的操纵代表了设计有趣的光功能系统的重要课题。在这里，我们报告了一种在纯有机体系中实现水性室温磷光（RTP）的两组分大分子自组装策略。两亲性三嵌段共聚物用于调节水溶液中平面RTP分子的自组装，从而导致形成具有清晰形态，均匀的晶体纳米结构和出色的水分散性的片状RTP对象。相反，将平面RTP分子添加到水性介质中只会导致RTP特性的沉淀和淬灭。粉末X射线衍射和单晶X射线衍射研究表明，两亲性三嵌段共聚物可协助平面RTP分子的超分子柱状堆积，其中多个非共价相互作用可稳定三重激发态。有趣的是，发现可以通过磷光模式和发射寿命测量从强荧光环境中提取薄片状RTP对象的发光信号。