Here, we present the first instance of a highly efficient red tetramer aggregate with tunable emission based on a cationic platinum(II) complex in conjunction with a silver cluster anion counterpart. This system exhibits multicolor emission response behaviors, which can be conveniently and directly detected through spectroscopic analysis, showcasing intriguing luminescence changes. The self-assembly of Pt⋯, π–π, and hydrogen bonding interactions not only enables an intriguing color adjustment from green to yellow emission, and eventually to red emission, but also demonstrates the co-existence of the monomer, excimer, and aggregation. These phenomena are further accompanied by well-defined nanostructures. The self-assembly process of these structures exhibits an isodesmic growth mechanism, which is dependent on temperature. In this regard, it exhibits potential applicability in multi-mode logic gates that rely on external stimuli such as concentration, solvent, and temperature. The sensitivity of the aggregates towards chemical stimuli combined with their exceptionally bright emission characteristics renders them suitable for diverse applications including solid-state lighting sensing mechanisms and anticounterfeiting measures. The multi-stimuli responsive phosphorescence and self-assembly behaviors of the cationic platinum(II) complex were substantiated by X-ray crystal structure determination, ¹H NMR analysis spectroscopic investigations, computational calculations and scanning electron microscopy (SEM) studies.

中文翻译：

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可视化高阶 Pt2+ 聚集体的超分子组装行为、刺激响应和固态发射


在这里，我们提出了第一个基于阳离子铂 （II） 络合物和银簇阴离子对应物的高效红色四聚体聚集体，具有可调谐发射。该系统表现出多色发射响应行为，可以通过光谱分析方便、直接地检测到，展示有趣的发光变化。Pt⋯、π-π 和氢键相互作用的自组装不仅实现了从绿色到黄色发射，最终到红色发射的有趣颜色调整，而且还证明了单体、准分子和聚集体的共存。这些现象进一步伴随着明确的纳米结构。这些结构的自组装过程表现出依赖于温度的同干生长机制。在这方面，它在依赖于浓度、溶剂和温度等外部刺激的多模式逻辑门中表现出潜在的适用性。聚集体对化学刺激的敏感性及其异常明亮的发射特性使其适用于多种应用，包括固态照明传感机制和防伪措施。通过 X 射线晶体结构测定、¹H NMR 分析、光谱研究、计算计算和扫描电子显微镜 （SEM） 研究证实了阳离子铂 （II） 配合物的多刺激响应磷光和自组装行为。