Aggregation-induced emission for the visualization of the structure and properties of polymers

Structure and properties are the main research topics related to polymers. Traditional research methods have the disadvantages of high cost and harsh detection conditions. Fluorescence imaging technology has the advantages of high sensitivity and effective visualization. The application of traditional fluorescent dyes is limited by the aggregation-caused quenching (ACQ) effect. Unlike ACQ molecules, aggregation-induced luminescence (AIE) molecules exhibit high emission in the aggregated state or solid state. This review summarizes the application of AIE molecules in the study of the structure and properties of polymers, including the visualization of structure, phase separation, self-assembly processes, the gelation process and the analysis of swelling properties, solubility parameters, molecular motion and cracks. Finally, the prospect of development by AIE molecules in the polymer field is suggested.