This volume focuses on the issues associated with the development of new fluorescent and phosphorescent AIE-active luminogens and their high-tech applications, especially in the area of biomedical research. While light emission from conventional luminophores is strong in solution state, it is weak in the condensed phase. In other words, light emission from conventional luminophores suffers from quenching caused by aggregation, which causes problems for their real-world applications. The discovery of aggregation-induced emission (AIE), whereby the aggregation of luminogens plays a positive role, enhancing the lightemission efficiency, has attracted much interest as it offers a new platform for the exploration of practically useful luminescent materials. Diverse AIEgens with tuneable emission colours and high quantum yields in the solid state have been generated. They have found technological applications in a broad range of fields including optics, electronics, energy and bioscience, and include promising candidate materials for organic light-emitting diodes, fluorescent sensors, solid-state lasers, etc. The development of a new generation of AIEgens, a deep understanding of the AIE mechanism(s) and the exploration of advanced applications will enable this exciting research area to develop further.
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