The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, School of Public Health, Guizhou Medical University, Guiyang 550004, China.
Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025, China.
Molecules. 2022 Apr 7;27(8):2378. doi: 10.3390/molecules27082378.
In comparison with the numerous studies that have centered on developing molecular frameworks for the functionalization of fluorescent materials, less research has addressed the influence of the side chains, despite such appendages contributing significantly to the properties and applications of fluorescent materials. In this work, a new series of cationic fluorescent probes with AIE characteristics have been developed, which exhibit unique sensitivity for charge-diffusion anions, namely HSO, via the interactions of ions and the cooperation of the controllable hydrophobicity. The impact of the alkyl chain length attached at the cationic probes suggested that the fluorescent intensity and sensitivity of the probes could be partially enhanced by adjusting their aggregation tendency through the action of the hydrophobic effect under aqueous conditions. DLS and SEM images indicated that different particle sizes and new morphologies of the probes were formed in the anion-recognition-triggered self-assembly process, which could be attributed to the composite effect of electrostatic actions, Van der Waals forces and π-π stacking.
与众多专注于开发荧光材料功能化的分子框架的研究相比，尽管侧链对荧光材料的性质和应用有重要贡献，但对其的研究却较少。在这项工作中，开发了一系列具有聚集诱导发光（AIE）特性的新型阳离子荧光探针，它们通过离子相互作用和可控疏水性的协同作用，对电荷扩散阴离子（如 HSO）表现出独特的敏感性。连接在阳离子探针上的烷基链长度的影响表明，通过疏水效应在水相条件下调节探针的聚集趋势，可以部分增强探针的荧光强度和灵敏度。DLS 和 SEM 图像表明，在阴离子识别触发的自组装过程中形成了不同粒径和新形态的探针，这归因于静电作用、范德华力和π-π堆积的复合效应。
