Fabrication of monolayer with aggregation-induced emission at the air/water interface

Kohei Iritani
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Abstract

Existing methods for producing transparent fluorescent materials are adequate for small scale production but unsuitable for larger scales. Assistant Professor Kohei Iritani and his team at the Department of Applied Chemistry, School of Engineering, Tokyo University of Technology, Japan, are working to develop 2D monolayers to overcome this. These monolayers are formed by the self-assembly of organic molecules at the solid/liquid or air/water interface and monolayers with the aggregation-induced emission (AIE) effect have the potential to be used as transparent fluorescent materials. The researchers have been successful in synthesising various AIE molecules and have made attempts to form a monolayer using the Langmuir-Blodgett (LB) trough. The team established a method whereby if a monolayer could not be obtained, feedback was given to the molecular design and a process of trial and error was repeatedly performed while new molecules were synthesised. This led to the construction of a fluorescence monolayer that can be transferred to a glass substrate while maintaining fluorescence emission. In their work to construct a monolayer with AIE effect at the air/water interface the researchers are seeking to suppress intramolecular motion using a flat surface of water as a substrate and make it emit fluorescence by forming a monolayer.
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空气/水界面聚集致发射单层材料的制备
现有的生产透明荧光材料的方法适合小规模生产,但不适合大规模生产。日本东京工业大学工程学院应用化学系助理教授Kohei riitani和他的团队正在努力开发2D单层膜来克服这个问题。这些单分子层是由有机分子在固/液或空气/水界面上的自组装形成的,具有聚集诱导发射(AIE)效应的单分子层具有用作透明荧光材料的潜力。研究人员已经成功地合成了各种AIE分子,并尝试使用Langmuir-Blodgett (LB)槽形成单层。该团队建立了一种方法,如果无法获得单层,则向分子设计提供反馈,并在合成新分子时反复进行试错过程。这导致荧光单层的构建,可以转移到玻璃基板,同时保持荧光发射。在他们在空气/水界面构建具有AIE效应的单层的工作中,研究人员正在寻求用平坦的水表面作为底物来抑制分子内运动,并通过形成单层来使其发出荧光。
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