【摘要】 合成了湾位羧基化的苝酰亚胺衍生物1,7-COOH-PDI-C₁₂（PDI-COOH），并在THF/H₂O溶液中与钙离子(Ca²⁺)结合，观察到独特的荧光增强现象。通过改变不同浓度的水合状态，详细研究了PDI-COOH/Ca²⁺的组装和荧光行为。基于PDI-COOH/Ca²⁺的组装形态和化学计量比差异，分别提出了PDI-COOH/Ca²⁺在THF/H₂O和THF中的荧光发射机制。这项工作揭示了一种聚集态荧光增强的新策略，并认识到水在分子荧光发射和组装中的重要作用。更多还原

【Abstract】 Bay-site carboxyl functionalized perylene diimide derivative 1,7-COOH-PDI-C₁₂（PDI-COOH） was synthesized and distinct enhanced fluorescence was observed through combining with calcium ion(Ca²⁺) in THF/H₂O solution.The assembly and fluorescence behavior of PDI-COOH/Ca²⁺were studied in detail by changing hydration state with different concentrations.Based on the differences in assembly morphology and stoichiometric ratios of PDI-COOH/Ca²⁺,we proposed the fluorescence emission mechanism of PDI-COOH/Ca²⁺in THF/H₂O and THF,respectively.This work reveals a novel strategy of aggregated state fluorescence enhancement and reminds us of the important role of water in molecular fluorescence emission and assembly.更多还原