Zhou Xiaolu, Zhang Hengzhi, Liu Yu
College of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University Tianjin 300071 P. R. China
Chem Sci. 2024 Oct 17;15(44):18259-71. doi: 10.1039/d4sc05698a.
The macrocyclic supramolecular assembly confinement effect not only induces or extends the fluorescence/phosphorescence luminescence behavior of guest molecules but has also been widely applied in the research fields of chemistry, biology, and materials. This review primarily describes recent advances in cyclodextrin (CD) supramolecular assembly confined luminescent materials. Taking advantage of their hydrophobic cavity, CDs and their derivatives effectively encapsulate guest molecules and special functional groups or further assemble and polymerize to restrict the motion of guest chromophores, inducing and enhancing the luminescence behavior and realizing intelligent stimulus-responsive luminescence depending on changes in temperature, light, redox reactions and solvent polarity, which are successfully applied in targeted cell imaging, sensing, information encryption, anti-counterfeiting and flexible electronic light-emitting devices. With the emergence of new chromophores and CD primitives, spatial confinement within CD supramolecular assemblies will further realize the rapid development of supramolecular science and technology in circularly polarized luminescence, fluorescence/phosphorescence cascade energy transfer, light-harvesting energy-transfer systems and long persistent luminescent materials.
大环超分子组装体的限域效应不仅能诱导或延长客体分子的荧光/磷光发光行为，还在化学、生物学和材料等研究领域得到了广泛应用。本综述主要介绍了环糊精（CD）超分子组装体限域发光材料的最新进展。利用其疏水空腔，CD及其衍生物能有效包封客体分子和特殊官能团，或进一步组装聚合以限制客体发色团的运动，诱导并增强发光行为，并根据温度、光、氧化还原反应和溶剂极性的变化实现智能刺激响应发光，这已成功应用于靶向细胞成像、传感、信息加密、防伪和柔性电子发光器件。随着新型发色团和CD原始物的出现，CD超分子组装体内的空间限域将进一步推动超分子科学技术在圆偏振发光、荧光/磷光级联能量转移、光捕获能量转移系统和长余辉发光材料等方面的快速发展。
