Beijing National Laboratory for Molecular Sciences (BNLMS), State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, P. R. China.
Chem Asian J. 2019 Mar 15;14(6):730-750. doi: 10.1002/asia.201801884. Epub 2019 Mar 6.
The last decade has witnessed rapid developments in aggregation-induced emission (AIE). In contrast to traditional aggregation, which causes luminescence quenching (ACQ), AIE is a reverse phenomenon that allows robust luminescence to be retained in aggregated and solid states. This makes it possible to fabricate various highly efficient luminescent materials, which opens new paradigms in a number of fields, such as imaging, sensing, medical therapy, light harvesting, light-emitting devices, and organic electronic devices. Of the various important features of AIE molecules, their self-assembly behavior is very attractive because the formation of a well-defined emissive nanostructure may lead to advanced applications in diverse fields. However, due to the nonplanar topology of AIEgens, it is not easy for them to self-assemble into well-defined structures. To date, some strategies have been proposed to achieve the self-assembly of AIEgens. Herein, we summarize the most recent approaches for the self-assembly of AIE molecules. These approaches can be sorted into two classes: 1) covalent molecular design and 2) noncovalent supramolecular interactions. We hope this will inspire more excellent work in the field of AIE.
过去十年见证了聚集诱导发光（AIE）的快速发展。与传统聚集导致发光猝灭（ACQ）相反，AIE 是一种相反的现象，它允许在聚集态和固态中保留强发光。这使得制造各种高效发光材料成为可能，为成像、传感、医学治疗、光捕获、发光器件和有机电子器件等多个领域开辟了新的范例。在 AIE 分子的各种重要特性中，它们的自组装行为非常吸引人，因为形成定义明确的发射纳米结构可能会导致在各个领域的先进应用。然而，由于 AIEgen 的非平面拓扑结构，它们不容易自组装成定义明确的结构。迄今为止，已经提出了一些策略来实现 AIEgen 的自组装。本文总结了 AIE 分子自组装的最新方法。这些方法可以分为两类：1）共价分子设计和 2）非共价超分子相互作用。我们希望这将激发 AIE 领域更多优秀的工作。
