Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhauri, Bhopal, Madhya Pradesh, 462066, India.
Chem Commun (Camb). 2023 Jun 27;59(52):8017-8031. doi: 10.1039/d2cc06607f.
The properties and functions of non-covalent interaction-driven fluorescent supramolecular self-assembly depend greatly on their evolution dynamics. Electron microscopy, atomic force microscopy, and confocal laser scanning microscopy have been used to elucidate the formation of molecular self-assembly. However, some pertinent issues, such as the drying or freezing of the sample for electron microscopy, the influence of the interactions between the tip and the sample in atomic force microscopy imaging, and the low spatial resolution of confocal laser scanning microscopy images, often impede the real-time analysis and exploration of the dynamics of molecular self-assembly processes. In this context, fluorescence correlation spectroscopy and fluorescence lifetime imaging microscopy have recently been explored to unravel the physical picture of the growth dynamics and stimuli-induced morphological transformation of luminescent self-assembled structures. The current highlight article demonstrates the need for fluorescence correlation spectroscopy and fluorescence lifetime imaging microscopy to acquire precise information on the dynamics and morphological evolution of fluorescent self-assembled architectures using a few remarkable recent studies. In addition to the current status and challenges, the future directions for the further exploration of dynamic self-assembly processes towards developing next-generation functional materials have been delineated.
非共价相互作用驱动的荧光超分子自组装的性质和功能在很大程度上取决于它们的演化动力学。电子显微镜、原子力显微镜和共焦激光扫描显微镜已被用于阐明分子自组装的形成。然而,一些相关问题,如电子显微镜中样品的干燥或冷冻、原子力显微镜成像中针尖和样品之间相互作用的影响以及共焦激光扫描显微镜图像的低空间分辨率,常常阻碍对分子自组装过程动力学的实时分析和探索。在这种情况下,荧光相关光谱和荧光寿命成像显微镜最近被用于揭示发光自组装结构的生长动力学和刺激诱导形态转变的物理图景。当前的重点文章展示了荧光相关光谱和荧光寿命成像显微镜在使用一些引人注目的最新研究获取有关荧光自组装结构动力学和形态演变的精确信息方面的必要性。除了当前的现状和挑战外,还描述了进一步探索动态自组装过程以开发下一代功能材料的未来方向。
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